Hey guys,

Well my IP in my 84 M1009 is leaking out of the throttle shaft. The truck has a tad over 80k on it, so I think I am going to put a new injector pump and a set of new injectors. I called a local diesel shop and told them I had a J code motor, so my IP was different. They said they are all the same for 82-91, and if I want they can turn the pump up 10% before I pick it up. I would just trade in my old one as a core. Is this true, and will I have the same preformance turning up a normal pump 10% as a J code pump? They want $405 for a pump, with a 12,000mile/1 yr warrenty. Does this sound too expensive? Same deal with the injectors, I just trade them in and get a rebuilt set. $41 bucks a pop for injectors. Does this sound at all reasonable? I have hard the military pumps have a different coating on the inside to handle different fuels? I'm not that worried about it, I just run regular road diesel.

Thanks,

Caleb

That sounds a little pricey. I would think you could find that stuff a lot cheaper than that.

Find a good shop and have your pump rebuilt. From what I have heard, the military pumps have hardened parts inside for running different types of fuel. There are also differences in pumps between C and J. You would probably never notice it unless you had a turbo, a C pump has a different fuel delivery valve and won't flow as much fuel as the J pump.:exactly:

At 80,000 miles I wouldn't waste money on rebuilding injectors unless you had a known problem. Run them to at least 150k. If they get a little sticky, run some good fuel additive.;)

41$ a pop for injectors!!!?? Thats reasonable when you compare them to Dmax injectors :)

Contact http://www.accuratediesel.com/ they will rebuild your pump for a fair price.

You need a DB2-4544. Thats a heavy duty 6.2 with max stock output. Parts inside are basically the same . If your going to run artic fuel or jet fuel you might want a military pump. Save the bucks and get the 4544. You can tweak the fuel setting yourself before putting it on.

You need a DB2-4544. Thats a heavy duty 6.2 with max stock output. Parts inside are basically the same . If your going to run artic fuel or jet fuel you might want a military pump. Save the bucks and get the 4544. You can tweak the fuel setting yourself before putting it on.

You just answered a question I was wondering about, when we sump the aircraft fuel tanks (after de-fueling into the fuel truck) for maintanence it goes into a contaminated barrel (since it is sumped they consider it waste).
I can get about 20 - 40 gals of JP4 (jet fuel) for free just about every week (the company is more then happy for me to take it since they have to pay to have it hauled off) and was wondering if it would run in my 6.2 (I replaced the C code with a J code motor a few months ago). THANKS this will save me a few bucks :)

4723 or 5056 would work as well or better than a 4544

here is a nice overview of which pump for which truck. however, starting above 4500.
does anyone know the same for lower numbers (to get reman pumps)
http://www.usdieselparts.com/pages.cfm?id=100&application=Chevy%20/%20GMC&product=Injection%20Pumps&code=60

in my military k30 is a 4267

4723 or 5056 would work as well or better than a 4544

Sorry my dear Sherman. Neither of those pumps are suitable replacements for a 1984 Truck.

Sorry my dear Sherman. Neither of those pumps are suitable replacements for a 1984 Truck.


*oops*
an why this?!
Im going to replace my old 4267 for a new 4879...
Just want to change the covers to get the 12V solenoids on top of my new IP...
Or is there anything else that wont fit?!


regards
Sonne

I have over 230K miles on my 84 engine and I have never changed the injectors or overhauled them. I know the tip does wear from the high pressure that is being ejected and I keep thinking about having them rebuilt as preventitive maint. since I don't like to be stuck with a problem 3K miles from home. I disassembled my Mercedes 200D injectors several times to clean and check them and they were still good at 240L miles when I gave the vehicle to my daughter. I think the injection pump will give me a warning, but I don't know about the injectors. If we were going back to Prudhoe Bay in Alaska then I would change out the pump and the injectors to be safe.

I really believe in preventative maintenance since I was an aircraft & powerplant mechanic in the Air Force!!! I changed out my fuel pump before we went to the Reno Air Races in Sept. and didn't think about my brake master cylinder. It failed in Oregon!!! Fortunately I had brake fluid and tools so I changed it out at the next town. I was shocked when I checked my records and discovered that it was the original!!! It had 225K miles on it, but most of them were highway miles.

btw-
IP swap is done!
I turned the IP 1/4 up before installing and gained more power by now...

Neither of those pumps are suitable replacements for a 1984 Truck. ):h


mfG
Sonne