Ok. This morning I checked the pressure again after the guage was on all night. Key on, engine not running, it showed almost 57psi. But it still had trouble starting. What do you think? Regulator? Thanks for your time trouble-shooting!
Yes your fuel pressure is to low. You need a minumum of 55 ish psi. Battery voltage sounds about right. You need to check your fuel pump and regulator. The easiest way to check the pump is to drop your fuel filter and test the pump from that location. You can rig something up with a fuel pressure guage and check the pressure by pinching the line right there. If you get good pressure from there, chances are its your regulator. If the pressure is low at that point, your fuel pump needs replacement.
Having trouble figuring out how to send messages. Sorry if you get duplicates. Battery checks at 12.41 volts. Fuel pressure is 54psi. Shop manual for CSEFI (which is what I have) says it should be 55-61psi. Is that to far out of tolerance?
Battery voltage is 12.41 with the truck off. Fuel pressure guage reads 54psi with key on, engine not running. My shop manual says Central Sequential Electronic Fuel Injection (which is what I have) should be 55-61psi. Is that too far out of tolerance? Not sure how to tell which line is return line to pinch off for regulator check.
Thanks I ll try to flush the trans first I guess but i will probably rebuild it my uncle was bringing up the truck when it started sort of slip or change in speed they put it on a trail so i don't know.
To check for pressure, get a fuel pressure guage on there and leave it on overnight. Just before you stat it the next day, throw it on to accessory and see what the fuel pressure jumps to. You should get 54-60 ish psi. If not, at this point, pinch the return line and see if this changes things. If the pressure now jumps right up, its you regulator. If the pressure still doesn't change, its your fuel pump. With this said though, check your battery voltage. You should be at least 12.4 battery alone or better. Hope this helps.
Fuel filter was replaced about 3 mos. ago to try and correct the problem. No change. Haven't check battery yet, although it turns over as quickly as it always has. Is there any way to check for weak fuel pump or weak regulator? Or does it require just replacing to see if that was the problem? Thanks for the quick response.