{"id":7381,"date":"2026-06-15T12:58:55","date_gmt":"2026-06-15T12:58:55","guid":{"rendered":"http:\/\/australianholden.com\/?p=7381"},"modified":"2026-06-21T11:45:44","modified_gmt":"2026-06-21T11:45:44","slug":"vc-commodore-blue-motor-problems","status":"publish","type":"post","link":"https:\/\/australianholden.com\/index.php\/2026\/06\/15\/vc-commodore-blue-motor-problems\/","title":{"rendered":"VC Commodore Blue Motor Problems"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">The Holden Blue Motor is one of the most recognisable Australian six-cylinder engines ever produced. Introduced in 1980 and fitted to the VC Commodore, the Blue Motor represented the final major evolution of Holden&#8217;s famous red motor family before the introduction of the Black Motor in the VK Commodore.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Available in 2.85-litre and 3.3-litre forms, the Blue Motor featured improved cylinder heads, electronic ignition and various emissions updates designed to improve performance, drivability and fuel economy.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Today, the VC Commodore Blue Motor remains popular among enthusiasts thanks to its simplicity, durability and ease of maintenance. However, after more than 40 years on the road, several common problems have emerged that owners should understand.<\/p>\n\n\n<div id=\"fu_ebay_0\"><!-- Presentation: cols = 4, rows = 2, slideshow = Manual, slides = 3, slideId = 0 --><div class=\"fu_ebay_results_container \">\n<h5 class=\"fu_ebay_results_title\" style=\"display: block !important;\">\n<a name=\"fu_slidetop_0\"><\/a><a href=\"https:\/\/www.ebay.com.au\/?mkcid=1&#038;mkrid=705-53470-19255-0&#038;siteid=15&#038;campid=5339152561&#038;customid=5339151688&#038;toolid=10049&#038;mkevt=1\" class=\"fu_ebay\" style=\"display:inline !important;\" rel=\"nofollow\" target=\"_blank\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/australianholden.com\/wp-content\/plugins\/fast-ebay-listings\/US\/Right_Now_108x45.gif?resize=108%2C45&#038;ssl=1\" style=\"border:0;display:block !important;\" width=\"108\" height=\"45\" alt=\"Right Now on eBay\"\/><\/a>&nbsp;VC Commodore<\/h5>\nLoading&#8230;<\/div>\n<\/div>\n<script>\n<!--\nvar content_fu_ebay_0 = null;\nvar waitForDepends_fu_ebay_0 = setInterval(function () {\n  if (typeof jQuery !== \"undefined\") {\n  if (window.fu_is_bot_useragent !== undefined) {\n    clearInterval(waitForDepends_fu_ebay_0);\n    if (typeof jQuery.ajax == \"undefined\") {\n      console.log(\"Fast eBay Listings: jQuery.ajax missing. Are you using jQuery.Slim that doesn't include ajax? \");\n      return;\n    }\n    if (fu_is_bot_useragent) return;\n    content_fu_ebay_0 = jQuery(\"#fu_ebay_0\");\n    jQuery(document).ready(jQuery.ajax({\n      type : \"post\",\n      url : \"https:\/\/australianholden.com\/wp-admin\/admin-ajax.php\",\n      data : {\n        action : \"fu_ebay_load_search\",\nfuDisableAPICache : 0,\nfuTraceLogging : 0,\nebay_country : \"AU\",\nfu_ebay_customId : \"\",\nfu_ebay_widget : 0,\nfu_ebay_picwidth : 225,\nfu_ebay_arrangement : 0,\nfu_ebay_title : \"VC Commodore\",\nfu_ebay_query : \"VC Commodore\",\nfu_ebay_searchInDesc : 0,\nfu_ebay_searchLocation : \"Internationally\",\nfu_ebay_pickupPostcode : \"\",\nfu_ebay_pickupRadius : 0,\nfu_ebay_sort : \"BestMatch\",\nfu_ebay_categoryIds : \"6030\",\nfu_ebay_sellers : \"\",\nfu_ebay_sellerType : \"\",\nfu_ebay_buyingOptions : \"\",\nfu_ebay_conditionOptions : \"\",\nfu_ebay_minPrice : 0,\nfu_ebay_maxPrice : 0,\nfu_ebay_minBids : 0,\nfu_ebay_maxBids : 0,\nfu_cols : 4,\nfu_rows : 2,\nfu_slideshow : \"Manual\",\nfu_slides : 3,\nfu_slideId : 0,\n\n      },\n      success : function( response ) {\n        content_fu_ebay_0.html( response );\n      },\n      error: function(e) {\n        console.log(\"Fast eBay Listings: deferred loading error: \" + e);\n      }\n    }));\n  }}\n}, 10);\n\/\/-->\n<\/script>\n\n\n\n<h1 class=\"wp-block-heading\">Understanding the Holden Blue Motor<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">The Blue Motor was developed from Holden&#8217;s long-running red motor platform.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Available Engines<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">2.85-Litre Blue Motor<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Six-cylinder<\/li>\n\n\n\n<li>Carburetted<\/li>\n\n\n\n<li>Electronic ignition<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">3.3-Litre Blue Motor<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Six-cylinder<\/li>\n\n\n\n<li>Carburetted<\/li>\n\n\n\n<li>Most popular engine option<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Both engines are generally reliable when properly maintained.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Are Blue Motors Reliable?<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">The short answer is yes.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Strengths<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Simple design<\/li>\n\n\n\n<li>Strong bottom end<\/li>\n\n\n\n<li>Good parts availability<\/li>\n\n\n\n<li>Easy maintenance<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Most problems encountered today result from age, neglect or high mileage rather than design flaws.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Timing Gear Failure<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">One of the most common Blue Motor issues.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Sudden no-start condition<\/li>\n\n\n\n<li>Backfiring<\/li>\n\n\n\n<li>Poor performance<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Cause<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Many original engines used a nylon-tooth timing gear.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Over time the nylon teeth become brittle and eventually fail.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Why It Matters<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Failure often occurs without warning.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Best Timing Gear Upgrade<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">Recommended Product: Steel Timing Gear Set<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Benefits<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Increased durability<\/li>\n\n\n\n<li>Long service life<\/li>\n\n\n\n<li>Improved reliability<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Best For<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Rebuilds<\/li>\n\n\n\n<li>Preventative maintenance<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Affiliate Link Opportunity:<\/strong><br>Search Holden Blue Motor steel timing gear set on eBay Australia.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Oil Leaks<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Oil leaks are extremely common on ageing Blue Motors.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Common Leak Locations<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Rocker cover gasket<\/li>\n\n\n\n<li>Sump gasket<\/li>\n\n\n\n<li>Timing cover<\/li>\n\n\n\n<li>Rear main seal<\/li>\n\n\n\n<li>Side cover gaskets<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Oil spots under vehicle<\/li>\n\n\n\n<li>Burning oil smell<\/li>\n\n\n\n<li>Dirty engine bay<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Most leaks are relatively easy to repair.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Rear Main Seal Leaks<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">A particularly common issue.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Oil dripping from bellhousing<\/li>\n\n\n\n<li>Oil on transmission housing<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Cause<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Seal wear over decades of operation.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Repair Difficulty<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">More labour intensive than many other oil leaks.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Worn Valve Stem Seals<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Blue Motors often develop valve seal wear.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Blue smoke on startup<\/li>\n\n\n\n<li>Increased oil consumption<\/li>\n\n\n\n<li>Spark plug fouling<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Why It Happens<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Rubber seals harden with age and heat.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Timing Chain Wear<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">High-mileage engines often develop timing chain wear.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Rattling noise<\/li>\n\n\n\n<li>Ignition timing variation<\/li>\n\n\n\n<li>Reduced performance<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Common Cause<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Normal wear after decades of use.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Replacement is often performed during timing gear upgrades.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Overheating Problems<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Cooling system issues become increasingly common with age.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>High temperature readings<\/li>\n\n\n\n<li>Coolant loss<\/li>\n\n\n\n<li>Boiling coolant<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Causes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Blocked radiators<\/li>\n\n\n\n<li>Failing water pumps<\/li>\n\n\n\n<li>Thermostat issues<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Fortunately, most cooling problems are easy to diagnose.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Best Cooling System Upgrade<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">Recommended Product: Three-Core Aluminium Radiator<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Benefits<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Improved cooling<\/li>\n\n\n\n<li>Better reliability<\/li>\n\n\n\n<li>Reduced overheating risk<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Best For<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Daily drivers<\/li>\n\n\n\n<li>Modified vehicles<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Water Pump Failure<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Water pumps eventually wear out.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Coolant leaks<\/li>\n\n\n\n<li>Bearing noise<\/li>\n\n\n\n<li>Overheating<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Common Cause<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Age and mileage.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Replacement is straightforward and affordable.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Carburettor Problems<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">The Blue Motor relies on a carburettor for fuel delivery.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Common Issues<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Hard starting<\/li>\n\n\n\n<li>Rough idle<\/li>\n\n\n\n<li>Fuel leaks<\/li>\n\n\n\n<li>Poor fuel economy<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Causes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Dirt contamination<\/li>\n\n\n\n<li>Worn components<\/li>\n\n\n\n<li>Long-term storage<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Many carburettor problems can be resolved through rebuilding.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Best Carburettor Rebuild Kit<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">Recommended Product: Nikki Carburettor Rebuild Kit<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Benefits<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Restores performance<\/li>\n\n\n\n<li>Improves fuel economy<\/li>\n\n\n\n<li>Solves many drivability issues<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Best For<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Original VC Commodores<\/li>\n<\/ul>\n\n\n<div id=\"fu_ebay_1\"><!-- Presentation: cols = 4, rows = 2, slideshow = Manual, slides = 3, slideId = 1 --><div class=\"fu_ebay_results_container \">\n<h5 class=\"fu_ebay_results_title\" style=\"display: block !important;\">\n<a name=\"fu_slidetop_1\"><\/a><a href=\"https:\/\/www.ebay.com.au\/?mkcid=1&#038;mkrid=705-53470-19255-0&#038;siteid=15&#038;campid=5339152561&#038;customid=5339151688&#038;toolid=10049&#038;mkevt=1\" class=\"fu_ebay\" style=\"display:inline !important;\" rel=\"nofollow\" target=\"_blank\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/australianholden.com\/wp-content\/plugins\/fast-ebay-listings\/US\/Right_Now_108x45.gif?resize=108%2C45&#038;ssl=1\" style=\"border:0;display:block !important;\" width=\"108\" height=\"45\" alt=\"Right Now on eBay\"\/><\/a>&nbsp;Nikki carburettor rebuild <\/h5>\nLoading&#8230;<\/div>\n<\/div>\n<script>\n<!--\nvar content_fu_ebay_1 = null;\nvar waitForDepends_fu_ebay_1 = setInterval(function () {\n  if (typeof jQuery !== \"undefined\") {\n  if (window.fu_is_bot_useragent !== undefined) {\n    clearInterval(waitForDepends_fu_ebay_1);\n    if (typeof jQuery.ajax == \"undefined\") {\n      console.log(\"Fast eBay Listings: jQuery.ajax missing. Are you using jQuery.Slim that doesn't include ajax? \");\n      return;\n    }\n    if (fu_is_bot_useragent) return;\n    content_fu_ebay_1 = jQuery(\"#fu_ebay_1\");\n    jQuery(document).ready(jQuery.ajax({\n      type : \"post\",\n      url : \"https:\/\/australianholden.com\/wp-admin\/admin-ajax.php\",\n      data : {\n        action : \"fu_ebay_load_search\",\nfuDisableAPICache : 0,\nfuTraceLogging : 0,\nebay_country : \"AU\",\nfu_ebay_customId : \"\",\nfu_ebay_widget : 0,\nfu_ebay_picwidth : 225,\nfu_ebay_arrangement : 0,\nfu_ebay_title : \"Nikki carburettor rebuild \",\nfu_ebay_query : \"Nikki carburettor rebuild \",\nfu_ebay_searchInDesc : 0,\nfu_ebay_searchLocation : \"Internationally\",\nfu_ebay_pickupPostcode : \"\",\nfu_ebay_pickupRadius : 0,\nfu_ebay_sort : \"BestMatch\",\nfu_ebay_categoryIds : \"6030\",\nfu_ebay_sellers : \"\",\nfu_ebay_sellerType : \"\",\nfu_ebay_buyingOptions : \"\",\nfu_ebay_conditionOptions : \"\",\nfu_ebay_minPrice : 0,\nfu_ebay_maxPrice : 0,\nfu_ebay_minBids : 0,\nfu_ebay_maxBids : 0,\nfu_cols : 4,\nfu_rows : 2,\nfu_slideshow : \"Manual\",\nfu_slides : 3,\nfu_slideId : 1,\n\n      },\n      success : function( response ) {\n        content_fu_ebay_1.html( response );\n      },\n      error: function(e) {\n        console.log(\"Fast eBay Listings: deferred loading error: \" + e);\n      }\n    }));\n  }}\n}, 10);\n\/\/-->\n<\/script>\n\n\n\n<h1 class=\"wp-block-heading\">Electronic Ignition Module Failure<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">The Blue Motor introduced electronic ignition.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Engine won&#8217;t start<\/li>\n\n\n\n<li>Sudden stalling<\/li>\n\n\n\n<li>Intermittent spark loss<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Common Cause<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Heat-related failure.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Why It Matters<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The engine may stop without warning.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Distributor Wear<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Distributor components wear over time.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Misfires<\/li>\n\n\n\n<li>Rough idle<\/li>\n\n\n\n<li>Hard starting<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Components to Inspect<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Rotor button<\/li>\n\n\n\n<li>Distributor cap<\/li>\n\n\n\n<li>Advance mechanism<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Routine maintenance helps prevent issues.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Best Ignition Tune-Up Kit<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">Recommended Product: Bosch Ignition Service Kit<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Includes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Distributor cap<\/li>\n\n\n\n<li>Rotor button<\/li>\n\n\n\n<li>Ignition components<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Benefits<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Improved reliability<\/li>\n\n\n\n<li>Better starting<\/li>\n\n\n\n<li>Smoother operation<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">Fuel Pump Problems<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Mechanical fuel pumps can fail with age.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Fuel starvation<\/li>\n\n\n\n<li>Hard starting<\/li>\n\n\n\n<li>Poor acceleration<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Common Cause<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Internal diaphragm wear.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Replacement usually restores proper fuel delivery.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Vacuum Leaks<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Vacuum leaks frequently affect older Blue Motors.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>High idle speed<\/li>\n\n\n\n<li>Rough idle<\/li>\n\n\n\n<li>Lean running<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Common Locations<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Vacuum hoses<\/li>\n\n\n\n<li>Carburettor base<\/li>\n\n\n\n<li>Intake manifold<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Even small leaks can affect drivability.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Exhaust Manifold Cracks<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Many Blue Motors eventually develop exhaust manifold issues.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Exhaust noise<\/li>\n\n\n\n<li>Engine bay ticking<\/li>\n\n\n\n<li>Reduced performance<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Cause<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Repeated heat cycles over many years.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Oil Consumption<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Higher-mileage Blue Motors often consume oil.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Common Causes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Valve stem seals<\/li>\n\n\n\n<li>Worn piston rings<\/li>\n\n\n\n<li>PCV system issues<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Monitoring oil levels remains important.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Head Gasket Problems<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Not especially common, but possible on neglected engines.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Coolant loss<\/li>\n\n\n\n<li>White smoke<\/li>\n\n\n\n<li>Overheating<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Common Causes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Severe overheating<\/li>\n\n\n\n<li>Corrosion<\/li>\n\n\n\n<li>High mileage<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Most Blue Motors avoid head gasket failure if cooling systems are maintained.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Best Engine Oil for Blue Motors<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">Recommended Product: Penrite HPR 30<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Benefits<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Suitable for older engines<\/li>\n\n\n\n<li>Excellent wear protection<\/li>\n\n\n\n<li>Australian conditions suitability<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Best For<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Stock Blue Motors<\/li>\n\n\n\n<li>Mildly modified engines<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">Common Maintenance Mistakes<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">Ignoring Cooling System Maintenance<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Overheating causes many major engine failures.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Delaying Timing Gear Replacement<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Failure can leave you stranded.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Using Poor Quality Ignition Parts<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Cheap components often create reliability issues.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Neglecting Oil Changes<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Regular servicing remains essential.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Recommended Reliability Upgrades<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">For most VC Commodore Blue Motors:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Reliability Package<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Steel timing gear set<\/li>\n\n\n\n<li>Bosch ignition components<\/li>\n\n\n\n<li>Aluminium radiator<\/li>\n\n\n\n<li>New water pump<\/li>\n\n\n\n<li>Fresh vacuum hoses<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">These upgrades significantly improve reliability.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Is the Blue Motor a Good Engine?<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Absolutely.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The Holden Blue Motor remains one of Australia&#8217;s most respected six-cylinder engines. It combines simplicity, durability and ease of maintenance with strong parts availability and excellent enthusiast support.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Most common problems are age-related and relatively inexpensive to repair. When properly maintained, a Blue Motor can easily provide many years of reliable service.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The VC Commodore Blue Motor is a tough and dependable engine that continues to power thousands of classic Holdens across Australia. While timing gear failures, oil leaks, cooling system problems and ignition faults are common, these issues are generally well understood and straightforward to address.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Preventative maintenance remains the key to long-term reliability. By upgrading known weak points and servicing the engine regularly, owners can enjoy the classic Holden six-cylinder experience with confidence.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Whether you&#8217;re restoring a VC SL, maintaining a family-owned Commodore or building a nostalgic cruiser, understanding the common Blue Motor problems will help keep your Holden running at its best.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Related Articles<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/australianholden.com\/index.php\/2026\/06\/16\/vb-vc-vh-and-vk-commodore-cooling-system-problems\/\" type=\"post\" id=\"7352\">VC Commodore Cooling System Problems<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/australianholden.com\/index.php\/2026\/06\/16\/early-commodore-starting-problems-guide\/\" type=\"post\" id=\"7370\">Early Commodore Starting Problems Guide<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/australianholden.com\/index.php\/2026\/06\/16\/early-commodore-electrical-problems\/\" type=\"post\" id=\"7368\">Early Commodore Electrical Problems<\/a><\/li>\n\n\n\n<li>Best Battery Upgrades for Early Commodores<\/li>\n\n\n\n<li><a href=\"https:\/\/australianholden.com\/index.php\/2026\/06\/16\/vb-vc-and-vh-commodore-suspension-problems\/\" type=\"post\" id=\"7362\">VB, VC and VH Commodore Suspension Problems<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/australianholden.com\/index.php\/2026\/06\/16\/how-to-inspect-an-early-commodore-before-buying\/\" type=\"post\" id=\"7348\">How to Inspect an Early Commodore Before Buying<\/a><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The Holden Blue Motor is one of the most recognisable Australian six-cylinder engines ever produced. Introduced in 1980 and fitted to the VC Commodore, the Blue Motor represented the final major evolution of Holden&#8217;s famous red motor family before the introduction of the Black Motor in the VK Commodore. Available in 2.85-litre and 3.3-litre forms, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":586,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[1],"tags":[],"class_list":["post-7381","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>VC Commodore Blue Motor Problems - Australian 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