Originally Posted by Pirateking
Mechanic said that if injector was stuck open, no compression, would push back down injector. To me, that's a lot of pressure to go backwards down a little nozzle. We have replaced the lift pump, fuel to the injectors.
Sent from my iPad using Cruisers Sailing Forum
Absolutely, not possible that the cylinder is losing enough compression through the injector to misfire. More likely this would result from bad valves, rings, etc. Not to say that any of this is the problem.
You are certainly not providing enough information for anyone on here to be able to help you or even want to. The questions are;
How fast is the engine turning over when you try to start it. Does it seem normal or slower?
Is the fuel at the injector connection adequate or does it seem minimal? Do you or the mechanic have enough experience to know?
Everything being the same as it was prior to the failure then the engine should fire on ether for sure and would only quit if there was a problem with fuel delivery
or air delivery
to the system. I can tell you this for sure as I am sitting in Darwin waiting for an injector pump
to replace the failed unit on the main engine which we lost
just west of Cocker Island on the north coast of the NT's. Wasn't to bad as our route
back was only 135 miles and we were only becalmed twice for a little over 15 hours.
Worked on the engine eliminating all other possibilities for 1 1/2 days even though I was confident of the problem after the first 2 hours. I could get the engine to run at a high rpm
without load by pumping the throttle while cracking injectors during the priming process but as soon as she was idled down she would quit. all the clues were there though as there was insufficient fuel at the injectors at idle position and when I tore the supply fittings off down to the check ball which is meant to hold positive pressure in the injector pump I found tiny filings. Now it is injector pump, injectors and while we are at it we will replace oil
cooler as it is mounted on the same side and there was a small coolant
leak at the gasket
Again, your problem sounds like fuel but you need to provide lot's more information before anyone can help you out over the internet