Duramax Injector Cup Leaking at Keith Blog

Duramax Injector Cup Leaking. Inspect the injector cup seat and head surface for cracks or warping. Lb7 duramax engines are very prone to leaking on the injector return line underneath the valve. You can try to reseal the cups and put it back. Replace any damaged gaskets and ensure injector cups are properly seated to. If your duramax develops injector cup issues, ignoring them can lead to coolant leaks, fuel contamination, overheating, and even catastrophic.

It is all back together, awaiting coolant and start up after 24 hrs is up. You can try to reseal the cups and put it back. I think i am having similar issues about to have it torn down, my mechanic seems to think i am vapor locking and not actually having injector. I resealed all 4 injector cups on the drivers side today. Finally tore into it today thinking if the injector cups look good ill go down to the head gaskets. Leaky injector cups and a head gasket issue can present the same symptoms on an lb7. Sent them to eis in or, flow tested them and they were fine.

Duramax (Life) Update (Stuck injectors, Head gasket leaks, Bad piston

Both injector tips had rust on the ends where the others did not. Duramax Injector Cup Leaking If your duramax develops injector cup issues, ignoring them can lead to coolant leaks, fuel contamination, overheating, and even catastrophic. Both injector tips had rust on the ends where the others did not. You can try to reseal the cups and put it back. Replace any damaged gaskets and ensure injector cups are properly seated to. It is all back together, awaiting coolant and start up after 24 hrs is up.