youryanyou

my friends stock d16 unknown miles *cluster was swapped* has been burning a lot of oil.it smokes blue.once started up in the morning no smoke but while driving and engine warms up it would smoke constantly could this be bad valve guides or is his piston rings shot?this guy is really on a budget and hopefully its his head cause i have a spare one for him

tonyhatchetman

it could be ether or both ,....try the head fist and if that dont do it then probably gonna be the rings,..........good luck

WeakSauce92

check for compression first.

EGSleeper06

Yes check the compression first, but it's most likely the valve seals. Especially if it smokes on start up.

D16SiHatch

that is true, except that he said the opposite..

op: unfortunately it sounds very much like rings are toast, and not valve seals. by all means do a compression test and/or cylinder leakdown test to confirm.

adp performance

it sounds like it is his rings.

thumper64

Just find another block and swap the head over. Sell that block to someone doing a turbo build.

thumper64

Or get rings, they're not expensive.

D16SiHatch

true, and neither is a rear main seal. but its the amount of labor it takes to replace these items that makes them a pain in the dick, not the price of the part.

Matt93eg

It is possible to get good compression numbers and still have the oil control rings shot. If the Oil Rings stick to the pistons then they won't wipe the oil off the cylinder walls. If the compression rings are fine you could still yield good compression even though the oil rings are stuck and not doing there job which will cause oil to be burnt in the combustion chamber.