well guys i checked my fuel pressure and at idle its a steady 36.5 is that too low??? because once my cars warmed up if i blip the gas it kind of lags a little then revs up and im trying to figure out what the hell is the cause of it

thanks for your help!!!
adam

 

That doesn't seem too low. Less pressure is needed at idle. What was the pressure when you removed the vacuum line from the regulator?

 

i believce it went up to about 43-44 about just seems low to me

 

43 psi is right on for fuel pressure with the vacuum line off. I'd have the car checked with a tool like Diacom to check for knock when you blip the throttle. This would definitely make the engine lag. I'd also check your spark plugs and wires if you want to hunt down sources for the problem.

 

would a burnt plug wire be the problem??? i cought one that got burnt a little and wrapped it up in heat shield right after it happened but it did crack away the silicone i just want my car to be up to its full potential....

thanks!!
adam

 

I would replace the wire; if it's not arcing now, it's just a matter of time. With the engine running in the dark, look for arcing around the bad section. You can sometimes here the arcing (sounds like a snap).

 

My brother drove his Z-28 with 25 psi of fuel pressure for a year, and trust me his car pulled very strong. Just in last couple weeks his pressure dropped to ~20 psi and he would need to turn the key and wait for a couple seconds for fuel pressure to build up before starting. Your pcm will ajust for lower fuel pressure, so you will not feel any change in performance. Your pressure is fine, and you should start thinking about changing the pump only if it drops to ~ 25 psi

Tomas

 

big thanks to everyone im gonna finish up my maintence come spring time because theirs a foot of snow on my car lucky me for having a block core heater though...