low boost problem solved..

[Jgolden]

I think I posted this twice, not sure.



Found the problem,

I have for a while been asking for and recieving good

advice on how to trouble shoot for low boost/power.

Turning up the fuel screw seemed to have little effect on boost. Did big air filter, changed out fuel filters etc. . each thing helped a little, but still a dog.

The real problem was this. My rig has an electric transfer pump. If I turned the key on, the pump sounded as if it was running. I "assumed" it was running. Actually it was sticking and barely turning. The regular Cummins lift pump could pull enough fuel through the electric pump when on a level, or under light load to run fairly well. Ad a stuck tank vent and getting up a long hill got to be pretty slow.

I replaced the electric pump today and what a difference. 20lb boost, reasonable egt's. Not a rocket, but lots of power and pretty good on hills. maybe now I can turn up the fuel a little or look for a bigger housing to get some top end power additions... ...

Thanks to those who have taken the time to answer my questions and help me eliminate possibilities. Another example of never assume... .



If my wife was a better sport and had agreed to hang under the rig and listen to the transfer pump run, while I climbed some hills, I would have figured it out sooner.

Thanks again.

 

[dpuckett]

Glad to hear you got it figured out and reported back to us. Maybe someone else will benefit from your findings.

If my wife was a better sport and had agreed to hang under the rig and listen to the transfer pump run, while I climbed some hills, I would have figured it out sooner.

I like that. I'll have to ask my girlfriend to do that sometime.



Daniel

 

[PToombs]

Good to hear you found it ,Joe! When you are ready to turn it up a little, let me know! :-laf Save one of those 4 bt turbos for parts.

 

[Forrest Nearing]

Glad to hear you got it figured out and reported back to us. Maybe someone else will benefit from your findings.







I like that. I'll have to ask my girlfriend to do that sometime.



Daniel

been there, done that, except it was me in the back of the car w/ her driving a manual transmission (which she hates) and I think I'd had more than a few to drink (which she doesn't usually mind... unless I ask her to do something she don't want to )