Hi all,
I have just put together a new 2LT engine (reconditioned block & crank, new head, valves, pistons etc) and I have some massive blow by. The engine ran well despite, but made it less than 500km before blowing out the rear main oil seal from the pressure. The block and head were each assembled at the engine shop so not a home job mistake. Leak down test confirmed there is pressure getting out of the combustion chamber and into the crank case. No pressure escapes into the cooling system, which is leading me to think the head gasket has done its job, and its the rings that have failed to seat.
We used standard Diesel engine oil, not any specific run in oil, but other than that I can't see where we would have gone wrong.
Has anyone got any tips on getting rings to seat properly in a new build. Willing to give anything a crack before having to tear it down and go again.
Cheers.
I have just put together a new 2LT engine (reconditioned block & crank, new head, valves, pistons etc) and I have some massive blow by. The engine ran well despite, but made it less than 500km before blowing out the rear main oil seal from the pressure. The block and head were each assembled at the engine shop so not a home job mistake. Leak down test confirmed there is pressure getting out of the combustion chamber and into the crank case. No pressure escapes into the cooling system, which is leading me to think the head gasket has done its job, and its the rings that have failed to seat.
We used standard Diesel engine oil, not any specific run in oil, but other than that I can't see where we would have gone wrong.
Has anyone got any tips on getting rings to seat properly in a new build. Willing to give anything a crack before having to tear it down and go again.
Cheers.