New Member, Needs Help!

[DonTX]

My book must have some pages gone, I assumed that each injector sprayed enough for two cylinders each. :-laf Heck, I have a Chevrolet that only has ONE injector for all 6 cylinders!!

 

[truckstom]

Man, this is a GOOD thread...

 

[DonTX]

Hang around, it might get better. All six njectors (I found the other three) are at the injector fixer upper shop today, will see how they do when they come back home. Whadda ya bet I have to pull that darned injector pump and have it overhauled as well? After that I see the starter not spinning it fast enough, buying a new one of them, only to realize the rings are shot and there is not enough compression to fire! Did somebody say I should have bought a powerstroke? #@$%!

 

[cojhl2]

Yea its like starting at the taillight, working fwd fixing things as you go,, then by the time you get to the grill she's in darn good shape!!!



I think this will fix it from what I can tell and based on that one experience I had.



If the starter spins the crank at 200RPM or better you are ok there too.



We are all waiting,, Im on the computer more than ever just to see how we are spending your money Don. .

 

[DonTX]

Five Hundred Thousand Miles!!! And here I am trying to coax mine past 40k! It's people like you that give me the necessary faith and fortitude to keep after it.

 

[bgilbert]

Don, didn't you say you drove this motorhome home a ways?????? And now out of nowhere, it's acting up?? LOL, maybe I should reread this thread... .



Oh btw, pump shops love when someone brings them a injector pump that the owner thinks the pump is shot, when the problem was just a start/run solenoid. . $36 solenoid later, got a good running pump, and a $$$ rebuild fee... oh but don't frown, they might be nice and go through it with a $15 seal and gasket kit.

 

[DonTX]

Yeah, it started and ran like a top when somebody ELSE owned it! I had went and looked at it and played with it twice. On the 200 mile trip home it got to stalling at stoplights and not wanting to start then or when shut down, just kept getting worse and worse. New batteries (starts on 5 of them suckers), new filters, new lift pump, did not help at all! Thought I may have old bad fuel, filled it up with 60-70 gal of fresh diesel, put on a DAVCO to see if it was sucking air and to fuel it from the engine compartment with known good fuel, no joy.

Don't worry, that solenoid will come off LONG before the pump comes off! Anybody got a good used IBT for sale that actually runs!? Maybe I should have got a Cat.

 

[McLaughlin]

Don,



Look at it this way. You've go a pretty long list of items that you know aren't causing the problem.

 

[RMcKinney]

Don,

Pinch the rubber Fuel lines flat with your fingers and let it go to see how long it takes for it to return to round shape.

If it takes a second or longer replace it.

My sons 69 Ford would run for a while then die.

He wanted to rebuild Carb, ignition system,breather or anything else.

I made him change the fuel line that ties the steal line to the tank and problem went away.

The old line would suck flat,shut off fuel and die.

Let it set ,the hose would open, flow gas,start and run.

What i like is its easy to check and install.

Rex McKinney 95 2500 stock 200,000 and running fine.

 

[DonTX]

I have temporarily eliminated the entire 36 foot fuel line, by using the DAVCO for a fuel tank. As you can see, the only hose is the 18 inches from fuel to lift pump, I am able to check it out with the manual primer as well as seeing the fuel flow.

 

[sparks57]

It sound to me like a failed low pressure fuel line... over the few hours of sitting, it's leaked enough fuel for the injection pump to loose prime. These things are extrememly hard to start after prime is lost unless you disconnect a couple of injection lines and bleed them out.



When the thing finely fires after not wanting too... does it stumble and blow lots of white smoke?

 

[DonTX]

Nope, never any smoke of any color. It is probably not leaking down, I have stopped it when up to temp and running, starting is hard immediately after shutdown even, worse when sitting longer. As per the photo, the fuel line is very short and easily inspected, no pressure line leaks. I feel this is because of a hot engine combustion chamber that it even starts at all when warm.

When given a shot of starting fluid, it fires instantly, never misses or stumbles, sometimes will do a little of the diesel "searching" by the governor.

As I had said, when running, it really seems to me to be a little less than as smooth as it should be and it seems to stink more than I think it should. Really burns your eyes and throat. I have bled it so often at the injectors the nuts are almost round, even when running. Each cyl misses when cracked, picks up instantly when tightened.

 

[truckstom]

I'm bettin' on the injecters being cleaned and tested will fix it.

 

[DonTX]

OK, you are on record now! Gosh I hope you are right, they are at the shop, are supposed to be back here Tuesday if the 'Fed Ex truck don't get lost. Unlike the old days, I am told they don't even look at them, just throw them in the ultrasound cleaner, disassemble, inspect for wear, reassemble and set pressures.

 

[cojhl2]

Ye gads Don, You won't get them until tuesday, that means they won't be installed until Wed at the earliest!!!



What am I supposed to do till then. This thread is what gets me going every day!!!



Hope they fix the problem,, I'm betting will!!

 

[DonTX]

They will be in in an hour or so after they arrive, easy job. You guys do know you are sure gonna look silly when after the new injectors are in, it cranks, and cranks, and cranks :-laf

 

[cojhl2]

Well for sure Don, I hope the injectors fixit!



But if it turns out to be the pump,, then you would have rebuilt the injectors anyway. What you are doing is performing the work in a sequence to avoid throwaway $.

 

[DonTX]

Update on the Saga of the Reluctant Cummins

:{ Well, I got some news, not sure if it is good or bad. The injector guy says that five of them checked out well on the pop test, good spray patterns, but the sixth one was leaking bad, will need a new nozzle. He thought it should have been smoking bad from the leak, but it wasn't. Somewhere back on this thread I think someone told me that a leaking injector could cause such a problem, seems the compression stroke puts air into the lines? None of this quite seems that way to me, seems like it ought to have been missing on that bad injector cylinder, and starting quick on the other five. Oh well, at least another busted thing fixed, even if it don't have anything to do with the starting problems.

 

[JLEONARD]

The engine should have started with 5 out of 6 injectors spraying a reasonably good pattern. The leaker should have made some smoke when cold.

But you already reasoned that out.

So what's next?

 

[1stgen4evr]

So what's next?



If in fact the fuel supply is not compromised, the only thing left (in my opinion) is the pump head. That is the reason I suggested a heavier viscosity fuel mix. Don have you determined that the pump will pop an injector at cranking speed? (external and visual with all the injectors installed so as to replicate actual cranking speed)



Geezs. My wallet is having sympathetic pains for you.



James