Archived HELP - engine died going about 40 now won't start

[DavidC]

Have you tried uninstalling the box yet?. No codes and a check engine light sounds pretty weird.



Dave

 

[mmclaughlin]

YEEHAW -



You mentioned that your fuel smelled like gas?!?! I would be checking into that much more if that's the case - that could be the cause of your problem.

 

[John - K5AWO]

Gasoline in fuel??

Hi again YeeHaw...



Hope you and the family are enjoying the vacation trip... probably not as much as if you had been able to take the CTD w/travel trailer.



When you get back, double check that gasoline issue again.

If you have gas in the tank, you just may have picked up a bad load of fuel.



John

 

[YEEHAW]

Just got back in town.



Dave - No I haven't done anything yet except get prices on pumps.



mmclaughlin & John - I took a sample from the filter and had several people do a highly scientific smell test - I don't think there was any gas in it afterall. I did have fuel conditioner in the previous tank and I filled up at 1/4. Also my dad put 88 gal in his Kenworth the day before at the same pump.



BTY, diesel was 1. 66 at the Flying J in Quartzite!

 

[cumminspwr01]

Try searching the 24V engine and transmission forum. I have seen quite a few posts in there lately about guys going from WOT to just letting off the throttle to make a turn or stop at a stop light and the trucks dying and not wanting to start up again. HTH

 

[BillGotthelf]

Yup it is a common problem with the 24v motors but only when they are highly fueled and boxed to death. When you are putting the pedal to the metal and let off real fast the solonoids in the injection pump slaqm shut causing a low pressure area to form on the injector side of the pump. This allows air to be drawn backward from the injector and air locks the fuel system. Only way to fix it is to bleed the injectors. Best way for it not to happen is to be real easy with the go pedal. I have not heard of it happening with a stock or lightly modified motor however.

 

[John - K5AWO]

$1. 66 in Quartzite? Still not worth the drive to go after it. Flying J at 67th Av & I-10 was 1. 739 today. Put in 42 gallons this morning.



Wonder if there is any chance your VP44 solenoids slammed shut on yours YeeHaw? Have you tried the air bleed procedure yet?

 

[YEEHAW]

The day it happened I tried bleeding then got it to run. It would die at about 1000-1100 rpm. It started again, and I let it idle for a minute, then gave some fuel and it died. I tried bleeding and can only get dribbles out of #3,4. I put a FP gauge on the filter housing and got 14psi.



Then I went on vacation.



Now, I bleed and only get dribbles out of #3,4. Took off the pump wire tap, reseated the 9-pin connector on the pump, and wiggled wires everywhere. Still no improvement. I still have the 1689 code. I replaced the fuel filter and didn't fill the canister back up so I could see how long it would take the LP to fill it. Well, after 9 bump-the-engine-so-the-LP-runs I have NO fuel in the canister and NO psi. Can the LP lose prime or do you think it wasn't working all along?

 

[B.G. Smith]

When you have the filter housing open, all the fuel in the line and lift pump can drain back to the tank. With everything closed back up, the lift pump is trying to pump air through the fuel filter and vp 44 until it picks up prime. You need a helper and while the lift pump is running either open the drain on the filter until it starts getting fuel or loosen the banjo bolt where the line from the filter goes into the vp. As soon as you hear the pump stop, close the drain or tighten the fitting then repeat the process. If you get fuel up to the vp, then crack the injector lines and repeat the process until you get a clear flow of fuel at the injectors, tighten up and try to start. bg

 

[YEEHAW]

I've been trying to get fuel to the filter with the LP by bumping the starter and letting it run. I kept the LP running without stopping for at least 30 min with the water drain open. No fuel.

 

[B.G. Smith]

Originally posted by YEEHAW

I've been trying to get fuel to the filter with the LP by bumping the starter and letting it run. I kept the LP running without stopping for at least 30 min with the water drain open. No fuel.

Ok, sounds like the lift pump is dead to me. bg

 

[YEEHAW]

Just put the new LP on have lots of fuel and 18psi after the filter. I'm not having much luck getting fuel out of the cracked injector lines.

 

[John - K5AWO]

Did you pour oil into that lift pump before you installed it? Sure helps it a lot to suck that stuff from the tank.



But, since it hasn't sucked any fuel up yet, you just may have a strainer sock in the tank that is shellac'd up. Might have been the original problem. I would throw the sock away and install a prefilter.

 

[YEEHAW]

I get a lot of fuel fro the LP. I now get fuel from all inj lines except #2 (haven't tried). Still no start.

 

[mmclaughlin]

It's still possible that oyu might have some air in the system. Another thing you can try is to press the scherader (sp?) valve so that fuel spits out a bit while bumping the starter. This should remove what air is left in the system.

 

[B.G. Smith]

Originally posted by YEEHAW

I get a lot of fuel fro the LP. I now get fuel from all inj lines except #2 (haven't tried). Still no start.

Are you getting a good squirt of fuel at the injector lines when the engine is turned over? If so, tighten the lines and it should start. bg

 

[YEEHAW]

I don't get anything except what amounts to LP dribble from the injector lines. I even had the engine running on ether and don't get fuel squirting from a cracked line. Fred at Desert Diesel is getting me a pump tester to use and should have it tomorrow.

 

[YEEHAW]

Got the new vp44 installed and it runs great! It was easy to bleed with the LP pump and got fuel from 4 cracked lines. It fired after about 2 sec of cranking and didn't take very long to get a good idle.



Thanks everyone for all of your help; John - K5AWO and espeially Fred from Desert Diesel.

 

[John - K5AWO]

Hey YeeHaw!



How's it feel to get your truck running again

 

[YEEHAW]

YEEEEEEEEHAAW!