Fuel pressure range

refit1701 · Post by **refit1701** » Mon Mar 22, 2010 4:28 pm

What is the acceptable fuel pressure range for our trucks? I found an electric pump with a 4-6 psi range with a relief valve "to prevent flooding". Can I use this without a regulator?

M-Thrax · Post by **M-Thrax** » Mon Mar 22, 2010 4:55 pm

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cuz · Post by **cuz** » Mon Mar 22, 2010 9:26 pm

If you do experience carb bowl overflow check the condition of the float and float valve/seat first. You may not need a regulator.

M-Thrax · Post by **M-Thrax** » Tue Mar 23, 2010 2:41 am

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refit1701 · Post by **refit1701** » Tue Mar 23, 2010 4:56 am

All good advise, thanks guys!!

I must go by NAPA now.

MSeriesRebuild · Post by **MSeriesRebuild** » Tue Mar 23, 2010 2:29 pm

6 PSI sustained may well give you a problem. I like staying in the 4 PSI range, never have had issues with that. NAPA has a new line of fuel pumps by AIRTEX. They offer an electric that pumps 4.5 PSI max, works great, no issues without a regulator. Always good to know the condition and type of needle-seat assembly you have in place, some just don't perform as well. I like the NAPA Echlin assembly that has already been mentioned also.