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Plugged up the flame heater feed at the booster pump.
No difference.
I'm thinking the booster pump has to come off. Ive had it off before but that was when I replaced the injection pump years ago.
No way do I want to do go through that again if I don't have to!
Maybe I can put the...
One more thing.
I just noticed that when I turn on the fuel, I can see fuel flowing from from the booster pump through the small forward facing plastic line towards the flame heater.
If I kill the fuel, I can see the line fill immediately with air.
I do not think this is normal?
Should I...
.
No Solution.
Have checked for leaks all the way from the lift pump to the tank return.
I have noticed that the pressure while cranking is ~5PSI only.
Should the booster pump start making pressure while cranking?
Once I squirt the truck, it fires and builds to 40 PSI in a few seconds.
Turns out the single piece of crud I was just a small piece of black foam that broke off of the secondary filter and was floating around.
Other than that, the canisters look clean I’m going to change the secondary and final filters anyway since I’m in there - but they don’t appear to be the...
Just received NOS injector.
I also got a NOS secondary filter assembly just so I could get another pressure regulator spring since I lost the old one.
The NOS injector also will not pop until I add starting fluid. So will consider injectors not the problem.
When I was putting new spring in...
OK - found a NOS secondary filter housing for reasonable. and ordered it. Hate to buy lots of extra parts just to ghet a spring - but at least I will know, its not the overpressure valve.
I also picked up a NOS injector to see if it will pop.
Now to wait.
.
I was thinkin about maybe get a diesel injector pressure tester off of Amazon to see if injector is bad. … but not sure if they come with all the parts to hook up the injector
OR
Buy a new or known good injector and see if it does better.
OR
Is it unlikely that all six injectors got...
I pulled injector and flipped it around.
No fuel spray while cranking.
Once engine fires off from starting fluid, I get a spray like this:
https://youtube.com/shorts/AY-6OVcTVLI?feature=share
You know that spring under the bolt on the secondary filter that you’re supposed to not lose ?
Where could a replacement be sourced?
Asking for a friend.
The top washer on the primary filter was a rubber one that looked like hell but didn’t show signs of leaking.
I replaced it with an aluminum crush washer and also replaced the lower canister seal. Still no fluid leaks, probably no air leaks - I feel confident it’s not my problem.
I checked...
I also will check the large compression fitting on top of the tank where the fuel enters the fuel line. It has leaked before and I’ve had to reflare it years back. It’s not wet - but will see.
Lift pump is pumping fine I think. 5 psi on cheap pressure gauge and maybe a quart of fuel in 5 seconds?
Wherever the air is getting in, fuel is not getting out. It’s dry dry dry no drips.
Must be a big air leak too because if I kill it and try immediate restart within a second, it just...
I have double checked the rubber fuel line in the tank - even replaced it with a submersible type while I was there. I am pretty sure its not leaking but the compression fitting at the top of the pipe it connects to on the fuel hanger might have been / still is? leaking. I had all of that...