[race5050]

91 IDI, F350, 112K Miles, 4x4 Crew Cab, E40D, Banks Turbo/ Exhaust/Transcomand. My truck runs great, starts great. No issues. When should I think about changing out the injection pump? Do they typically fail completely (i.e. at once) or do they give you some sort of warning that they are starting to fail? I want to get my truck ready for another 7K mile round trip to Cancun, Mexico. I don't want it to fail on the road.

Thanks for your input!

 

[Ketchup]

First post here, not an expert. The IP is designed for around 100k. Lots of them go longer. They can completely crap the bed in an instant, but usually they start to leak first. Sometimes the leaks continue for thousands of miles before complete failure. There's lots of info on the site if you look around (several how to replace discussions, some with video links). If I were you, I would buy a new one and keep it handy, but run the old one as long as looks good. If you had to you could probably swap it roadside in a couple of hours if you have tools. Timing it correctly is pretty advanced. The core charge will set you back a bit extra cost wise...
The safest bet is change it now. They aren't that cheap though. Expect to pay 600ish if you shop around.

 

[drinkypoo]

If your IP is old and tired, and you run out of fuel, and you manage to get it started again, then the next thing you should do is go get an IP, and don't let it cool down until you get home either.

Otherwise, echo the last line above.

 

[NH2112]

My experience with these DB2 pumps in GM 6.2l diesels is that you'll notice one of two things: Either the engine will start normally when cold but start very hard or not at all when warm, or you'll start noticing a power loss while driving and within a couple hundred miles it won't run any more.

The first one is obviously better; you can pour some lukewarm water over the pump to tighten things up enough for it to start and then add 2-3 quarts of clean engine oil to the tank with every fill-up to increase the viscosity of the fuel and prolong the inevitable. Start saving up for a pump & injectors, or to have the old ones rebuilt, when this first happens to you!

In the second case, when you notice that you have to give it more fuel than normal to climb a hill or maintain speed, start saving for a pump & injectors, or to have the old ones rebuilt. Continuing to drive it can be risky, since you don't know when it'll crap out on you. Most likely it won't be in a place that's either convenient to do the work or inexpensive to get the truck to a place to do the work.

 

[dommers]

All right guys I have a 6.2L 87k5 I just replaces the fuel pump. No go.. Noticed a leak up top. Still won't start. Get a new injector pump or get a rebuilt? And it was having for trouble pushing the tires and lift. And how hard is it to replace. I have never changed one out before. Any help would be outstanding.

 

[nbkr341]

Mine leaked and I started having trouble starting when hot. Not sudden at all, but it's a big/expensive repair so plan ahead.