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Old 14-03-2019, 14:18   #16
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Re: Diesel Engine Cutting Out

Quote:
Originally Posted by ausnp84 View Post
Ok, thanks all.

Next:
4.) Engine fuel filter to be replaced
5.) Fuel vent line to be checked and tested
6.) Fuel return line to be checked and tested
7.) Lift pump to be replaced

Update to follow!

N
Ok, only check one thing at a time and start with the easiest/cheapest and work your way down the list.
Easiest...remove cap from fuel fill to test your vent.
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Old 14-03-2019, 15:00   #17
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Re: Diesel Engine Cutting Out

Did you blow back your he line into the tank?? Make sure pick up is clear??
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Old 14-03-2019, 16:10   #18
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Re: Diesel Engine Cutting Out

Been through this painfully. The group has given you good advice and I did all that the first time around and it did not solve anything simply because I had an undetected air leak that I had looked for and missed.

BEFORE you replace all that stuff one-word: AIR as in air leak.
You mentioned an air leak and I strongly suggest you haven't found the leak. They can be very painful to find and often as in my case allow the engine to run for hours and then it stops.

Remember the engine pump is a vacuum so you may not see the leak as it is SUCKING air and no fuel my drip.

1) wrap every joint/fitting with a small piece of paper towel
2) get a small fuel pump and PUMP fuel into the system from the first access point after the fuel tank. ( as opposed to having the engine fuel pump suck fuel.
3) The paper towels will pick up the leaked fuel and you'll find the fitting that is air leak.
4) Yes it is a PIA but works

If you need more: <svascension@yahoo.com> Russ
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Old 14-03-2019, 19:37   #19
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Re: Diesel Engine Cutting Out

Quote:
Originally Posted by Chuck34 View Post
Ok, only check one thing at a time and start with the easiest/cheapest and work your way down the list.
Easiest...remove cap from fuel fill to test your vent.
A lot of great advice in this thread but I especially like Chuck34ís advice, above.

One thing at a time.

Just yesterday I solved a few problems with my diesel generator.

I had a combination of problems. One problem was a broken wire on the electric fuel pump which caused it to occaisionally starve for fuel.

The next problem was a tiny leak at the inlet fuel line on the primary filter allowing just enough air into the line to cause very similar symptoms as the intermittent fuel pump problem.

But I ran down the checklist one item at a time, including taking the fill cap off to check for a plugged vent, blowing down the hose into the tank to see if I had clogged the fuel pickup with junk.

I had multiple issues with the engine but I tackled one fix at a time.

Iím not that smart that I can fool with a few things at once and come up with a diagnosis.

Great thread OP. Youíll love it when itís running like a champ.
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