This is topic Fuel Pressure low? in forum Tech Talk at Northern California Ford Owners  .


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Posted by mustanggt5091 (Member # 444) on :
 
What should fuel pressure be set at? Mine is at 35 psi and drops to 33 when reved above 1500. I was thinking it should be in the 38 to 40 psi range. any ideas. I have a stock fuel pressure regulator, I hear Kirben are the way to go. I will be buying a ajustable one soon.
 
Posted by StreetStang37 (Member # 935) on :
 
I been told its normal because your vacuum increases slightly at part throttle, lowering the fuel pressure. Your fuel pressure will raise (stock setting is 41#'s at WOT/0 vacuum I think) when you go WOT (no vacuum). Try doing some QUICK WOT revs. Another person inside the car should do this because I dont think doing it by hand is fast enough unless you want to accidentely hit the fuel cut off @ 6200 or get close to it.
 
Posted by 66 AC COBRA (Member # 904) on :
 
jeff, u arent talkin about ur car, u ahve 24s on a 351, i have 24s on a 302 and it likes 43psi without vacuum attached, u should need more since u have more hp
since this cant be ur car, what car is it, did u buy another one like me

have u taken ur heads to lance to get checked yet, u better have, u dont get crackin i will have my 427 (not 408 anymore) runnin before u finish, what do u thing about stage 2 ported afr 205's [worship]
 
Posted by mustanggt5091 (Member # 444) on :
 
No, I am talking about my car and yes there is only 35 psi and 33 at WOT! What the fuck, I do have 24 and slightly larger fuel rails(351 rails), but thats low I think.

Eric, since you melted part of my dads timing light, let me get one of your smog pumps. When can I come by and see the new car. And yes 205 would be nice, so would canfields!!!! [Big Grin]
 




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