cucvrus
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Yes any air leaks and it will drop the fuel. The fuel system must be tight. How did the feed line install go for you?
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Pretty straight forward. A bit tight getting the whole line around the frame. Thanks.Yes any air leaks and it will drop the fuel. The fuel system must be tight. How did the feed line install go for you?
I'm hoping that's the root of the problem. Definitely makes sense to me, low voltage=intermittent ip shut offNice! Can we all get an E for effort? Lol! Alternator wire... Was not expecting that one!
Well didn't get to test my theory, cause now it wont start again!
Injector lines are dry!
I guess my issue is the IP? I dont understand why the fuel is draining back to the tank. Its certainly not going anywhere else. No leaks at all.
Not that this might matter, but the truck is parked up hill all the time.
I would think if there was air leaking into the system, fuel is leaking out of the system. I dont see any wet spots or fuel sitting anywhere.!Finding Air In The Fuel System, A Tutorial!
Air in the fuel system always has some kind of negative impact on the overall engine performance of a diesel engine. Unlike gassers that don't have a big issue with it, our diesel's object to little air bubbles. I had to troubleshoot air entering the fuel system of my '82 shortbox truck...www.thedieselpageforums.com
As annoying as this whole thing is, I guess I should just bite the bullet and start replacing things.Fuel does not need to leak out to allow air is. If it gets air it also allows for back feed of fuel. This puts massive amounts of air in the lines and then the system must purge that air to operate and start as designed. It really isn't that difficult to keep the air out. But like I stated. If you have no knowledge of the age of the lift pump, Injection pump, and fuel sock in tank. That is where I would start. Make sure you have the correct lift pump. They list incorrect ones in many books and I have fallen victim to that once and had serious issues trying to resolve an issue. https://www.steelsoldiers.com/threads/cucvrus-repair-projects.192437/page-4#post-2290204 I hope that helps. If not then it is time for https://dieselcare.store/products/r...cgFLlVs25_xHJojFLyHJ86aChES8VuuRoCicQQAvD_BwE
Good Luck. You need the J code intake manifold gaskets https://www.amazon.com/Fel-Pro-MS91586-Manifold-Gasket-Set/dp/B000C2GELU
Smoke test? do tellI have chased an air leak before on a different diesel powerplant. You wont see a vacuum leak drip. Smoke test it.
I have no doubt air bubbles will show up. Im just tracking down the source.You replaced all the rubber fuel lines, including the one feeding the IP from the filter? Had that one loosen itself up before...
When I had air leak issues I put a clear tube on the short fuel return line from the IP so I can see the bubbles. I noticed parking uphill made it worse.
No problems in regular weather. No drain back issue either.erasedhammer how was the truck running before you had the leak in the original fuel line? Is this a continuation of, Hard cold starts hot weather thread?
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