Great Lakes 4x4. The largest offroad forum in the Midwest banner

dieing diesel :(

3K views 29 replies 18 participants last post by  drew91xj 
#1 ·
i just purchased my first diesel thursday afternoon, its a 96 f250 single cab long box with 151xxx miles on it. drove it all day thursday and to work that night, then home friday morning and around town during the day friday, then friday night while going through town it starts missing and acting like it ran out of fuel, so i pull onto a side street and flip tanks real quick wondering if the tank was empty knowing i had just filled it thusday, i didn't believe so but w/e. it spit and sputtered for a minute then i was able to throtle it back to life and it ran fine again till the store. left the store after adding diesel clean and took the back roads home to open it up a bit and clean its self out, made the first corner it spit and sputtered and coasted to a dead stop. after 30 mins of fighting with it it fired and drove home. saturday while driving home it did the same thing spit and sputtered and dieded. only took 15mins to get it started this time by feathering and holding the throttle wide open it started and ran fine the rest of the way home. am i headed in the right irection to asume the filter needs to be changed as the truck had been sitting for awhile before purchase?
also things i know need replacing are the belt and the tensioner pully and/or the tensioner its self being the pully has worn half way threw the tensioner bolt itself. also the batterys check out good and i didn't notice any change in the alt gauge during the time which it was acting up as that was my first guess as to be the problem. long winded i know wanted to get all info out at once.

any help or guidence is greatly appreciated
drew
 
See less See more
#4 ·
sat for sale for about 2 months and rumor has it it sat at the guys house for a while before being put up for sale. filter was my first guess after the baterys checkd out, will change filter once i get back to that project need to finish the jeep and get it outa the garage...simple drive train swap took way longer then expected on the jeep lol
 
#5 ·
Look at the middle of the grill, if you need more explination I pitty you... If it only started after tons of cranking it might be the filter, if it started after sitting it could be a lift pump, if the fords have those. Did you switch tanks again the second time it died?
 
#8 ·
freak: it starts up after cranking on it for awhile and fathering/holding the throttle open. the first tmie it did it was on the back tank which was full when i bought the truck, the second time it was on the front tank which i filled thrsday afternoon. and then drove home on the rear tank after it started again.

scooter: i havnt seen any smoke or anything either while cranking it over or after it fires.

milwaukeef350: the oil is full checked that also the first time it happened, what/where is the ipr valve tin nut? first diesel still leraning. and i havnt looked to see if the filter is housing is empty when it happenes.

could any of this be caused by the bad belt tensioner not being tight and spinning somthing fast enough?
 
#12 ·
IPR is your Injector pressure regulator. Your HPOP creates high pressure oil which is fed through you injectors to fire them. If you are not building enough pressure the truck will not start. Sometimes if you have a leak the system will have symptoms of dying after warming up.
 
#16 ·
thanks for all the advice guys. im working on finishing my jeep this weekend hopfully and then will tackle this issue, i will be starting with the filter as i have visualy checked it and it appears to quiet black and also the hpop oil lever as am told it is right in front of the fuel filter. after that i will see what hapens and continue going down the list of things to check. thanks again
 
#18 ·
will probly change everything if the filter doesn't change anything.... is the hpop resivoir filled through the oiling system or does it ahve to be filled seperatly? havnt looked into it much with other things going on but need it running soon as my g/f just sold her jeep and i now need two vehicles again
 
#19 ·
X 2 on the wiring harness. Had the same thing happen on mine around the same milage.
There's a clipthat comes unpolugged where the injectors and glow plugs wiring goes through the valve cover gasket. It comes unclipped and then it runs like poo- or not at all. PM Frdboy for any tips on taking care of it. I think he knows the part number by heart for that clip.
 
#20 ·
The hpop is filled through the regular oil system. Because it requires you to build so much oil pressure so fast it has its own built in reservoir. Even changing the oil will not completely change all of the oil in the system. A few quarts are always in the HPOP res. for starts.

Dirty oil can cause injector failure.
 
#21 ·
im not quite convinced it is the injector harness as it starts up and runs fine after it stalls out, i thought if the harness went it wouldnt run at all? iv been abel to drive it home both time it has stalled after letting it set for a few and holding the throlttle wide open, im going to change the filter and look into the hpop res to see if it is arriated like a buddy had suggested and go from here. keep the tips coming
 
#23 ·
go back to your "I don't know jack shit about diesels" cave.

OP, check the wiring harness for abrasions where the harness comes up the side of the block.

Is the lift pump keeping the fuel filter housing fill during and post cranking? I read the whole thread earlier but forgot.

Other than those issues, it could be a IDM crapping out, or a broken wire under the valve cover. I know a lot of these have already been stated, just double checking.:thumb:
 
#24 ·
u need to get ur hand on OR take it to someone that has a nice OBD 2 diag scanner..... if u take it to some one who knows these HEUI engines then they can tell you instantly where to start just by observing the PID's. These engines need specific things to run that u can read off these scanners. And u can do a test for almost every vital component on this truck with the activation mode. Then maybe do the work your self. There are many things that this could be, so this would be the fastest way.
 
#25 ·
ok so a long winded summary of whats gong on so far.. i changed the filter,tensioner and 1 idler the other day, drove fine on the front tank great throttle response ect, today i took it for a drive on teh rear tank got about 3/4 mile down the road it started acting up wanting to die spitting sputtering missingect, i throw it in neutral and flip to the front tank and fether the throttle a bit and it picks its self back up and runs great. so i figure id try it again went around the block on the rear tank again and same resalt, bout 3/4s the way around about the time i figure the front tank fuel has cycled through it starts spitting and sputtering ect, i go through the same process as befoer of fliping to the front tank and feathering the throttle same resalt it picks itself up and runs great the rest of my lil test drive. so my thought is the rear tank which was full when i bought and had sat for who knows how long has bad fuel in it and needs to be syphened (sp) out and fresh fuel put in. any one agree disagree with this theory? and after thinking back i believe the truck was on the rear tank the last two times this happend prior to me asking all these ?s.

thanks drew
 
#29 ·
well havnt tested completley diagnosted it yet but when i went to syphon the rear tank i got nothing and only about a 1/4inch of the syphon hose was wet. tapped on the tank with a screw driver is sounded pritty damn empty.. so its possible the gauge doesn't work and it quit on the rear tank and being a new truck i jump to the worst case that somthing was wrong with it after spending the money on it that i did. so ignorance/stupidity might have prevailed and 1 upd me this time around, on a side note if this is the case i have learned alot about this truck already after replacing what i have and investigating everything that has been mentioned, but i will report back on my findings when pay day come around as of now im just driving my chevy :thumb: thanks again for all the tips
drew
 
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top