Hi all.

I bought a <NOBR style="FONT-FAMILY: Verdana; COLOR: darkgreen; FONT-SIZE: 100%; FONT-WEIGHT: normal" id=itxt_nobr_17_0>truck</NOBR> back in December. My first diesel. I didnt know much about them.
After running the truck for a few weeks sparingly, it quit on me one night.
I could not get it to start. It would crank but not run. I got in touch with a few diesel mechanics on the phone, who told me it was a fuel problem. Might be the injector pump or the solenoids. It sat for over a month and after all the damn snow was finally gone, I convinced a <NOBR style="FONT-FAMILY: Verdana; COLOR: darkgreen; FONT-SIZE: 100%; FONT-WEIGHT: normal" id=itxt_nobr_19_0>mechanic</NOBR> to come look at my truck. The day before he came, I charged up the batteries. I cranked the engine to see if they took a good charge and the truck started. It was revving high around 2000rpm, so I turned off the ignition, only to find out that it was still running! I started to panic and tried to call someone, but I couldnt find anyone to help me. I tried disconnecting every wire connector I saw, but nothing worked. It was running too long so I decided to undo the fuel line going to the filter and it finally stopped.
The next day, the mechanic showed up. He bled the fuel lines to get the air out and we got it started, but the same problem occured. He disconnected the power and ground to the solenoids, but it kept running. We had to stop the fuel again. He said the fuel shut off solenoid was the problem.


Ok... thats the story.
The reason I am here is to get some more opinions. Do you think it is the fuel shut off solenoid? Is there also a high idle solenoid in the pump? Does that need replacing too? Is there anything tricky I need to know if I swap them out myself?

I am curious to know these things before I go and spend the money.
Thanks to those that can help.

 

Welcome to FTE. It does sound like the fuel shutoff soleniod is sticking open. You can replace them but be real careful to and pay attention to how it came apart. If you don't get it back in right you will have trouble. It is located under the cover on the top of the ip (injection pump). It is held down with 4 screws and has a large retund line comeing out of the top front of it. Yes there is a fast idle soleniod on these engines. Unless you live in a cold climate it is not really nessacry to have it. Also when cranking these engines don't hold the starter for more than 10-20 seconds at a time. After 10-20 seconds let it cool down for 2 minutes before cranking it again. More thasn this will burn the starter up. i am sure someone with more info will come along soon.

 

If you pull the cover off the fuel solenoid be carefull when you reinstall it. It is easy to get wrong and the notor will run wide open, and the key will not kill it. One member just ruined his motor by the time he cut the fuel line. After you get it installed have a piece of wood ready to cover the air c;eaner to kill it.

 

hi all again.

Ok... I bought a new shut off solenoid. I swapped it out with the old one and finally got all the air out of the lines and got it started. The truck again, ran wide open and would not shut off.
Maybe I am not putting the top of the IP back on right. Does the piece that sticks out on the shut off solenoid need to clip onto something in the IP? Maybe when I originally took it off I never put it back on right and the old shut off solenoid was ok. Is the IP bad? The injectors are getting fuel.

Also...to shut the motor down, I held my hands over the air intake. It took a lil while to kill it, but I saw some smoke coming from behind the engine. Did I do something bad? Is it ok?

 

Is it just idling high or is it running all the way up to redline trying to kill itself?

 

The smoke could have been raw fuel. Was it white? if it was pushing that much fuel with no air to mix with it would have been dumping it out the exhaust.

 

i am curious what wide open means, hope it wasnt runaway redline. I would be hard pressed to put my hands in an engine bay that had a diesel runaway screaming. In the future, have a pair of vice grips ready and just clamp the fuel line. Way easier and stops faster with the suction it creates.

 

Unplug the 2 wires on your IP, then turn on the key to the RUN position, but do not crank it.. Next go under the hood and touch the rear wire to the spade you pulled it off of. Do you hear it click? if not then the FSS is stuck. If you DO hear it click, then it should be working correctly. If no click, then, Can someone explain the steps to reinstalling the IP cover? i think i can but i want him to get it right the first time. Then, before you try to crank it again, check to see if the FSS clicks...

 

That would be ,,,,,,ME!..... Please be careful,I wasnt and KA-PLOOEE!

 

Well I tried to find the thread that had pictures posted on how to reinstall the fuel solenoid, but couldn't find it. A piece of wood will kill it way quicker than your hands.

 

When mine was running off with me I was terrified to even reach in there and cut the fuel line!! Much less try to choke it by hand,,Gee Whiz some of yall scare me..........

 

If i remember right, you place the cover down on the ip about 1/4" forward of where it goes and slide it rearward into place. i may be bassackward but i believe that was the way it goes... REMEMBER to check for the click BEFORE you ever attempt to crank it again.

 

This might help you some. I wonder if it is possible for the metering valve to be sticking.

 

On a runaway the appropriate action is to block off the intake, however never reach or lean in a runaway engine bay to choke it off, throw something over the intake.

Then RUN!

Pinching off the fuel may very well not stop a runaway, what if it's sucking oil!

-Enjoy
fh : )_~

 

You can always just call 911. lol