Hey guys, so my car is puffing white smoke and I am trying to solve it before my next event. Last night I did a compression test and leak down on a warm motor. The car has about 45k miles has a sos super charger pushing 410 and over the past 2 years has been tracked and auto x alot. Trying to figure out the next step I should take in trying to solve this. It is burning oil I am not sure how much since I never logged it. cylinder 3 looks alittle weaker than the others. Cylinder 4 had a darker spark plug. I plan to inspect the retainers tonight. any other things I should be doing next? I am researching now how to inspect retainers and valves since I have not experience with it yet.

compression test

1
230
230
2
238
238
3
225
225

4
228
226

leakdown
cylinder 1
4%

cylinder2
4%

cylinder 3
5%-6%

cylinder 4
4%



picture of the spark plugs: Order goes 4-3-2-1 number 4 looks a bit darker maybe 1000 miles on the plugs

 

It could be there was water in the last tank of gas you poured in your car. Happened to me once, car was blowing out white smoke, after my next fill up she stopped.

 

check coolant level. possibly get an oil analysis done and check for coolant. leakdown wouldn't point to bad head gasket, but you may be leaking and burning coolant somewhere.

 

#1 most likely... but easily detected and by the looks of it your #2 and #3 plugs have been cleaned by something... Coolant?

#2 My opinion your chains stretched, timing is off and late ignition and burning oil but... that leaves a question why #2 and #3 plugs look cleaner

 

What would cause a chain to stretch other than regular use over time?

 

just for other peoples reference. I pulled the head swapped the head gasket, re did the valve guides and valve seals. car is perfect just got back from the track, strong as could be

 

IDK if that tells anyone much of anything. Based on the compression, leak down, and plugs I would have said your car was fine. Now white smoke, that is a different story. Did you figure out what exactly was causing the issue?

 

Head gasket.

 

Wouldn't head gasket result in low compression and and air leak sound in dip tube or bubbling in coolant tank?