Unlocking the Truth Diagnosing Oil-Fouled Spark Plugs

Vehicle Maintenance Services · Our certified technicians undergo 270 hours of training in an ASE-certified program · We perform a full-service oil change in about ... Oil in the spark plug tubes is caused by shrunken and hardened spark plug tube seals, which can easily be replaced by just pulling the valve covers. Oil still looked pretty good at 2000 miles. Spark plug fouling virtually went away. Recommended intervals for engine tune-ups were doubled. As ... When spark plugs wells fill up with oil, it typically means the valve cover or seal is broken, which is a simple problem to solve. If oil persists in the spark plug threads or plug wells over an extended period, it becomes a significant problem. This can lead to several issues. 360 likes, 3 comments - prettyboyycris on January 4, 2025: "This builds gonna be fireeeeee just watch @speedfactoryracing valve cover ... I think you may have a coil problem. The oil on the plug is nothing to worry about at this time. That is another problem. But a minor one. Leaky cam covers is where your oil is coming from. You may have success by tightening the hold-down bolts(the tend to loosen on Supra engines). Comments ; WHY THERE IS OIL IN SPARK PLUG WELL, ENGINE MISFIRE FIX. Auto Repair Guys · 871K views ; Spark Plug Tube Oil Leak Repair - Toyota I4 ... See coupons for Jiffy Lube services like oil changes, vehicle inspections, & tire, brake, or car alignments. Print or email your coupons.