Hi Everyone.

I posted in another section and they recommended I try here.

I am new to this forum. Looks great.

I have a 1997 2500 4 by 4 diesel. 5 speed. It currently has 300 000 kms on it. It has been a great truck and has done more than it's share of work for me. I am sad to report she is a little sick right now.
It started with progessively harder to start. I had to touch the pedal a little to get it to start. Had to plug in on any nights colder than -10 cel. One day I was driving down the driveway and it just stalled. Then
it was had to start and finally went. I waited a while an then it seemed to drive fine. Now it is very difficult to start. It must b einside or plugged in and even then it is a rough start for 30 seconds or so.

I just had the manifold heater relays replaced.

How do I know that both heaters are working properly?

Does anyone have any ideas what else it could be. The mechanic mentioned it could be fuel pump or injector pump?

So I just drove it after having the new relays put in and it doesn't seem to make a difference. Still hard to start and rough for 20 to 30 seconds or so.

After driving for awhile . It seems to start pretty good.

I am not sure if this is because it is warm or because it has more fuel pressure.?

 

when was the last time you changed your fuel filter. . .second is there is another filter right behind the P7100 injector pump that has probably never been changed either.

if that doesnt fix your problem let us know

 

Welll you have come to the right place for your question. Many expericened folks here that will help you no problem. Sounds like a fuel problem to me too. Be sure to check back after changing your fuel filters as Drew mentioned. If that doesn't help, it sounds a lot...well exactly like the problem a neighbor was having and one other that posted a similiar problem in the past couple months. Being a rookie and not knowing the injectors situation in the 97, that is the very next thing I would explore. Rumors I have heard is that the ULSD is increasing the number of old injectors being replaced, coincidence?

 

Thanks guys.

I did the main cartridge filter right before they put the relays on I will look for the additional filter and change if I find it.

I have been religious with my filters. I change fuel, oil, and air everytime I do a service. Less that 10 000 km per.

 

Drew,

I ahvn't seen another filter before injector pump. I looked in my Haynes manual and all that is mentioned if the fuel heat/prefilter. Could this be it?

 

there is another filter between the main filter and the pump. . .I nearly burned my haynes manuals cause they list all sorts of crap wrong.

 

Drew,

I had a look their.

Is it in the fuel heater assembly. This truck is a 97. I think they changed them the next year.

Do I remove the fuel heater/ preheater assemby to see? Is this a replacable filter or do I clean it?
If it is replaceable? I would like to order one and have it on hand to install when I am working on it.

 

Drew,

I cna't seem to find that other filter.

I took the fuel preheater down but I didnt' see another filter.

Can you describe how I can identify?