Still trying to rescue a Mustang 2040 that was left idle for a couple of years. The person I bought it from was not really up on its history, but somewhat familiar in knowing what it was used for. I have now replaced 2 of the 4 fuel injectors and the lift pump. I am not seeing the amount of fuel I would expect to see at the end of the fuel line. It kind of resembles the squirt you get when you use the windshield washer on you car. I would think it should be much stronger and higher pressure than that. I am not seeing any real smoke from the exhaust either, not black or white. I only replaced 2 fuel injectors because that is all I could get out. The other 2 are frozen in place. I am confident that #2 and #3 have suffiecient compression. While I do not have anything to measure its compression, I noticed that there is a strong pressure emitting when the injector is removed. Not a perfect measure, but a good sign. Fuel flows freely into the pump, so no reason to suspect a clog. My service manual talks about timing the injector pump, but I cannot locate the marking it refers to for identifying number one bore. I suspect my fuel pump may be the issue, but need to ask for opinions before spending $500 plus dollars and looking for someone to fix it. Anyone seen these symptoms? Grateful for any assistance. Ken
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Diesels really don't squirt much fuel out each stroke. It will look like there is no pressure as it is not being restricted, if you restrict it with an injector it shoudl give a nice spray. As i assume yours is direct injection, it should look like this:
The best way i have found to test this is to hang a tube line out the back of the engine bay and attach an injector, spin the engine over and see if you get a nice spray out of the injector. Do not touch it as it can pierce your skin. If you get fuel on all 4 delivery nozzles on the pump, it should be ok.
It may take a little bit of cranking to get fuel to the injector if you do this test though.
The best way i have found to test this is to hang a tube line out the back of the engine bay and attach an injector, spin the engine over and see if you get a nice spray out of the injector. Do not touch it as it can pierce your skin. If you get fuel on all 4 delivery nozzles on the pump, it should be ok.
It may take a little bit of cranking to get fuel to the injector if you do this test though.
Tazza Thanks for the insight. You post some really neat information. I hope to get some time to investigate this approach shortly. I will get back with my findings. Thanks
