Hi,

I had a head exchanged and when I bolted everything down to specs, it still made a lot of white (whater we think) smoke out of the back...more so than blowby. I took the head back off and realized I had left out the alignment pins. New gasket and alignment pins and it still did it.....smokes like crazy...runs good.

I pulled the head and had it pressure checked OK...and checked my cylinders for cracks. I had also pulled connection on each fuel injector and pulled the spark plg for that cylinder to see if the smoke decreased when cranking. Nothing definitive...but a little on cylinder 2.

The man at the head exchange place noted that there didn't seem to be much impression on the head from the gasket. I torqued to spec.

The question is...do I need new bolts for this...or is there maybe water in the bolt holes causing premature torque....or anything else you can think of before I go for round 3.

This is a 93 civic LX with the 1.5

Initial PSI was 135-160 before the rebuild...now around 190...still looks like too much smoke for blowby.

Thanks in advance for any help

 

It didn't smoke at all before...and got around 41 mpg...I just ended up burning valves and had to do the work.

Thanks

 

Buy new bolts.

Did you check whether the head and block mating surfaces are level to spec?