so my compression was starting with the cylinder on the driverside and the last # being the far left on the pass. side 150-160-130-160. all are in spec 184psi max 135 min. but not withing 28psi from the highest # to the lowest. What do i do next? not sure if its my rings or valve seals that need replacing

 

Do a leakdown test next. I believe there is a link in the FAQs.

 

leakdown should point you the correct direction.

 

re-do the compression test but poor oil into each cylinder before the test, if compression rises its the rings. if not its either going to be the valves or headgasket.

 

its not the head gasket, its brand new and the head bolts are brand new. Im going to do the leak down test and see whats up

 

I need to do a leak down test on my D15B8 and need to know if I need to have a hot or cold engine? If you do not know for sure, please dont answer, thanks

 

Related threads merged.

 

Thread closed as requested by OP.