FUEL PRESSURE???'s

[dickeymoore]

I'm running a Holley 12-834 mechanical fuel pump with is rated at 7.5 max psi,on my sbc 400 in my 1980 Monte Carlo and the fuel pressure bounces from 7 to 11 psi constantly is there something wrong with the fuelpump or what been running it like this for a couple of years and was just wondering if I should change the fuelpump?Thanks

 

[Clone TIE Pilot]

You need to install a fuel pressure regulator as all mechanical fuel pumps these days put out too much PSI for carbs.

 

[dickeymoore]

I have been running these holley fuelpumps for years and it's rated at 7.5 psi max and doesn't require a regulator just saying Thanks

 

[dickeymoore]

And it's one of Holley's made in the USA fuelpumps not the Korea made fuelpump that they make nowadays

 

[fleming442]

Is it going past the needle and seat, then flooding the engine or washing the bores?

 

[69hurstolds]

If it's not pushing past the seat in the carb and your float levels are fine, don't worry about it. The pressure seems too high to me, but if it's not posing an issue...

If it is, you need to do something. Simple as that. And a fuel regulator will do it.

 

[dickeymoore]

Car runs and drives great been running this way for years but I have noticed if I stall it up and leave in 1st gear hard when I shift to second it cuts out or when I do a burnout and leave, it acts like it lose power but car runs and drives great other than those 2 issues THANKS

 

[fleming442]

Check your float levels.

 

[dickeymoore]

Floats are good

 

[fleming442]

OK! So, there's no problem, then! perfect