So I have a d16z6 that has gone through 3 head gaskets in 3000miles, first time didn't replace bolts, or check level, second time replaced bolts, third time check level, have head machined, new bolts..... I have done head gaskets in about 50 other motors.... and never had a problem. so what the heck am I overlooking? I think this time I am going to try arp head studs.... but does anyone else know if there is an issue with cracking somewhere that I am not aware of. every time it results in loss of compression on one or more cylinders.with a new gasket, compression fine again. Also blew the d15b2 turbo headgasket, but I kind of was expecting that.

 

if its a stock motor (non boosted) there maybe a block issue. check the block deck for straightness.

 

Did that, everything ok.... Must be something like a crack or something I am not seeing.