Engine/Transmission (1994 - 1998) Suburban has never ran right

[CumminsBurban]

Cumminsburban, make sure that you post what you find when your problem is figured out. I have talked to lots of people about your problem here in Alaska and everyone thinks it is your pump. I would really like to hear what it is.

I will be glad to share the solution. This board has been helpful in giving me directions to pursue. I actually have access to another pump. My only question is the owner (my brother) got the pump and we have never heard it run. Don't know anything about it so I hesitate to put that much time into switching my pump with that without knowing for sure that it will work.

 

[Extreme1]

When you checked the CPL did you verify that the pump is the right part number for the engine?

I actually have access to another pump. My only question is the owner (my brother) got the pump and we have never heard it run. Don't know anything about it so I hesitate to put that much time into switching my pump with that without knowing for sure that it will work.

It will cost about $250 to get you pump on a test stand (including adjusting it). Any hardparts will be more. Be sure that you tell them to contact you if it needs more work BEFORE they start on it. I have a 180 pump that I got cheap and the pump shop called and said "you pump has a bad plunger and needs to be rebuilt". I told them to leave it alone, I'd come pick it up and pay them for the diagnosis. Their response: "We already have it taken apart". Completely apart. I was not happy! :-{} I doubt Sheid's would do that but just be clear up front so there are no problems.



It might be cheaper to have your brothers pump tested (and tweaked) than to fix yours.

 

[CumminsBurban]

When you checked the CPL did you verify that the pump is the right part number for the engine?







It will cost about $250 to get you pump on a test stand (including adjusting it). Any hardparts will be more. Be sure that you tell them to contact you if it needs more work BEFORE they start on it. I have a 180 pump that I got cheap and the pump shop called and said "you pump has a bad plunger and needs to be rebuilt". I told them to leave it alone, I'd come pick it up and pay them for the diagnosis. Their response: "We already have it taken apart". Completely apart. I was not happy! :-{} I doubt Sheid's would do that but just be clear up front so there are no problems.



It might be cheaper to have your brothers pump tested (and tweaked) than to fix yours.

I did not verify the cpl number to the engine. I'm going to ask a question that might not be the best but what would that change? As long as it is timed to the correct pump, what difference does the engine make? I know the different pumps all go on the same engine. Whether I have a 180 pump or a 215 pump, nothing else on the engine is different so I'm not sure why that would matter.



The problem with fixing my brother's pump is that I can use it short term but he wants it back at some point. So, if I've got to put money in something, it might as well be mine.



I also am in the process of putting electric coolant fans and a transmission cooler on. I really don't have the money to be doing all of this but I don't see how I have many options either if I want to keep it together. My wife is wanting us to pull our camper to the Smokies in a couple of months and I have to have all of this done before then.

 

[RoadGoesOnForever]

The CPL number and thus the kind of pump that is on the engine makes a huge difference in how you set your timing. For example, my 215 hp engine has a completely different plunger lift/timing chart than say a 160 hp engine. If I was to use the wrong timing chart, my timing would be off. This chart shows the differences in plunger lift vs. timing. I was wondering if you could quickly describe the method you guys used to time the pump please?

 

[CumminsBurban]

I believe my cpl number is 2174. We used the piston roll to the valve method to find tdc. Then, we put the dial indicator in the pump and got the right amount of lift.

wow, it has been over a year since we did this and I don't remember much more detail than that. I think I'm going to time it one more time before I take the pump off. Just because it can't hurt. So, I'm going to check the timing, check fuel pressure and then off comes the pump. The only problem is I have no time to do all this so not sure when it will get done.



thanks,