Ive got blue smoke coming from my exhaust and ive run a compression test and checked the turbo but its not either of those. what else could it be?
The normal causes of different colors of exhaust smoking are:
. black smoke = over fueling
. blue smoke = burning oil
. gray smoke = coolant / water
In your case, check the spark plugs for oil burning - If they are wet with oil, check the oil seal bonnets on the valves, or the piston rings. A compression test may not help you determine if it is a piston ring issue. You may have an oil ring issue and good compression rings. No oil on the spark plugs may not tell you if the exhaust valves bonnets are leaking oil since the oil could be burning after the .
Your issue could be a few things. Simplest first would be the PVC valve. Other issue would be valve seals, valve guides or piton rings. The blue smoke is from your vehicle burning oil
Iām happy to assist further over the phone at https://www.6ya.com/expert/jeremy_677dced97ad9bddf
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