VWDiesel.net The IDI, TDI, and mTDI source.

Engine Specific Info and Questions => IDI Engine => Topic started by: westcoaster on March 29, 2008, 07:36:35 pm

Title: I think I figured out the blow by...
Post by: westcoaster on March 29, 2008, 07:36:35 pm

Well, I think I figured out why my motor had so much blowby....

The second compression ring on cylinders 1, 2, 3 was snapped in half. All cylinders had signs of rust pitting the cylinder walls along with some mild scoring. there is a nice indent of a valve on the piston tops in cylinders 3 and 4. I would have to say the motor was run (or cranked) with the valve timing out and one of the prechamber inserts was cracked in the head....

How can I tell if this block had been rebuilt before?

Title: Re: I think I figured out the blow by...
Post by: CoolAirVw on April 01, 2008, 08:32:09 am

Quote from: "westcoaster"

one of the prechamber inserts was cracked in the head....

I've read that minor cracks in pc chamber are not a problem.