Duramax problems, I think I'm screwed. Help

[trophyhunt]

Was it the cp3?.     might look at getting a aftermarket lift pump when you have the cash. It keeps the injector pump from having to work so hard. It also filters air and water from the  diesel fuel. The stock filtration sytem only filters to about five micron but a aftermarket lift pump will filter to two micron.

I'm having to replace injectors on my 04 GMC 2500 diesel and I went ahead and put a lift pump on it first.

what did it cost?

[coachcw]

the cp3 is the hi pressure pump . we always run oe filters and stay away from veggie oil . change filters every 15-20 k for good measure. 

[NW-GSP]

The air dog lift pump was right at $600. Beats paying $4000 for replacing injectors.

[HntnFsh]

Was it the cp3?.     might look at getting a aftermarket lift pump when you have the cash. It keeps the injector pump from having to work so hard. It also filters air and water from the  diesel fuel. The stock filtration sytem only filters to about five micron but a aftermarket lift pump will filter to two micron.

I'm having to replace injectors on my 04 GMC 2500 diesel and I went ahead and put a lift pump on it first.

Actually the AC Delco (Racor) is a 2 micron coalescing filter. So not only do they do a great job of filtering the fuel they also trap and keep water from getting into your system. The stock filters are as good as they get. That's all I run. By the way. A lot of people swear by WIX filters. But their fuel filters for the Duramax are lousy. Tons of info on this stuff over on the duramax forum. The Air Dog and Fass pumps do help with the lift pumps. But they are also known to have their own problems.

[trophyhunt]

Is the Napa Gold a good filter?  That is what I usually use and I change my filter every other oil change.

[HntnFsh]

Napa gold is a WIX filter. You can find the AC delco or Racor which is the same thing for about $28 online.

[HntnFsh]

I usually buy 4 at a time. The last batch I got through B line out of Texas. Heres a link to the sale going on at Dmax store. $27.99
http://dmaxstore.com/products/?route=product/product&product_id=170

The stock air filter is as good as it get for filtration and flow up to 500 hp too. A lot of guys like to run KN filters. But they aren't a good filter for diesels and let a lot of crud through.

[NW-GSP]

I don't trust a system that's suppose to filter water and fuel in the same filter especially with the injector issues lb7 engines have

[SnakeEyes]

I put the CAT Filter adapter on my 2003. The CAT filters are cheap and much easier to spin on.

http://lincolndieselspecialties.com/i-20984439-cat-adapter-kit.html

[trophyhunt]

Thanks for that site Hntnfsh, bad azz.  I've been looking for shocks for months and couldn't find a set of 4. they have them.

[HntnFsh]

I put the CAT Filter adapter on my 2003. The CAT filters are cheap and much easier to spin on.

http://lincolndieselspecialties.com/i-20984439-cat-adapter-kit.html

What do you use to trap the water?

[HntnFsh]

I don't trust a system that's suppose to filter water and fuel in the same filter especially with the injector issues lb7 engines have

I do. The factory filters were upgraded because of the issues with the LB7 injectors. After spending how many 10s of millions of dollars on replacing injectors for people do you think GM would take a chance on using an inadequate filter, again?  Then throw in the millions more they probably spent with racor coming up with an improved filter. I feel pretty good about them. Especially after doing a lot of research.
Also, don't forget the LB7 injectors are a lot different than the newer ones. Newer model injector issues are few and far between.

[yorketransport]

Well, coach has diagnosed my problem, injector pump broke inside! 

I've replaced a few injector pumps in my work trucks over the years (all 7.3 L Internationals in various forms) and I remember having one do the same as yours. Start the truck up and it would just dump the fuel all over the place.

Injector pumps aren't cheap, but they're cheaper than a new truck. Even with the added expense of fuel and repairs a diesel will pay for it's self if you keep it long enough and take good care of it. If nothing else, a few big repair jobs on a diesel engine will make replacing a $3000 transmission in a smaller car look like a pretty good deal!

Glad you found a good mechanic. They're hard to find sometimes but worth every penny when you need them!

Andrew

[trophyhunt]

Well said, with the cost of new trucks this will be my last big rig.60,000.00 for new ?? They are fn crazy! And finding a mechanic that is honest is priceless!

[rtspring]

Well said, with the cost of new trucks this will be my last big rig.60,000.00 for new ?? They are fn crazy! And finding a mechanic that is honest is priceless!

Ya Coach is my hunting buddy, but he is as honest as they come. I've seen him work on numerous cars that he could have billed the customer for 5 hours but only charged them for two!!!!  That is rare to find..