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Old 05-19-2006, 11:03 AM   #14
MT-2500
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Re: Suburban won't start when it's cold

Quote:
Originally Posted by flht
MT
That is starting pressure, running pressure is much lower, as I said right now I do not have the problem as profound as the weather is warmer. This looks like the fuel pump. I do still have the one I changed out. I had some corrorded wires in the connectors but I changed out the pump at that time as the tank was down. Guess I will have to do this again. Do you recommend a manufacturer better ther the other for a new pump.

thanks FLHT
Gm oem is good but high.
I use a lot of after market pumps but always the good grade ones.
But first if the pump puts out 75-85 lbs of pressure with the return line pinched the pump is good.
The fuel regulater controls the pressure without return line blocked.
Also watch for a fast leakdown. If a fast leakdown you have a leak someplace.
Also make sure the wiring connector to fuel pump is good.
If the pump is not getting good voltage or ground it will lose pressure.
Good luck
MT
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