This just happened to me Friday night, and I thought to myself self o that’s cool that they put a dummy light on for a hot starter. Some folks won’t stop till it’s dead. Hope all is well behind the scenes Joe. Good to see ya.
Thanks Jay. Retirement's breath is on my back and there are some options to work with different companies on a part time basis being explored. There is a six month lead time on channel videos and they auto post to channel. This allows time to live and make videos that address viewers needs when they ask for help. The "comment lazy" is due to trying to align the stars for a smooth as possible transition to the Big (semi) R after 51 years at it.
LOTS OF COMBUSTION AIR IN FUEL RETURN< are cm 870 injector cups replaceable without pulling head? New injectors, and still getting lots and lots of compression gas back into ifsm from head. Could this be from leaky valve seats? Bad Cups? Bad head gasket? bad turbo? Or a combo of all the above?
No you can not replace the cups on engine as far as I know. I have never seen this before. If combustion is coming up a cup you should see a carbon track moving up past where the injector seats. I hate to say it needs a head but it might. Look carefully at the sides of the cups for a pin hole or crack. If it not an injector and this is being caused by a cup I would talk to a machinist to see if it is repairable but If it is the head I would recommend a replacement head. (If you took this to cummins I think they would replace injectors and if that did not fix it put a head on it. )
Hi Joe, got head off cm870. No visible cracks,QUESTION : If the intake/exaust valves get plugged up with sticky tar is it possible that Its sticky, pushing exaust compression back into the fuel rail or "ifsm" because its easyier than going through the valve? Like the valves are plugged or leaking?
If you have an injector internally broken and the plunger wont seat in the cup the pressure is usually in the return fuel. If the injectors ball check is failed you can see compression in the ifsm. Take a very close look in the head where the injectors bolt in
