My mistake.

You should really verify your fuel pressure again after the new pump install.

Gotta get that pressure up. Something is restricting it. 18 psi isn't enough.....

 

What about the regulator?

 

Ive checked it about 5 diff times. All the same. The reulator was replaced yesterday. There's gotta be something restricting it somewhere. I just don't know where

 

Do you have the cap and rotor or the coil packs???? My #3 was misfiring and making sad nasty sounds. I changed the coil-on-pack and it's great! Just gotta get that nasty treatment stuff out my tank that my friend thinks works....

Posted by: Dre

 

I have the cap and rotor since it's a 93. And they were changed not to long ago as well. But it doesn't have a misfire. I'm about 99% sure it's a fuel problem since it's only getting 18 psi max. Any other suggestions?

 

did you try clamping off your return line and see if the pump will come up to pressure that way?

 

No I did not. I'll try that when I get home along with a new fuel filter just for kicks. If it builds pressure with the return clamped off, what would that mean? Any other things to try while I'm at it? Thanks guys the help is greatly appreciated

 

it would rule out the second new pump and see if it will even build pressure. im not sold on new parts anymore. my first new pump was bad in no time. less than 2 weeks. i bet it could have gone out sooner. i said it before but my fuel line on the pump assembly was clamped above the barb so it looked fine but it would just leak around the line. the only way i found it was i was checkin the clamps and the hose came right off. im talkin bout the hose inside the tank. at least you could rule anything in the pressure side and start looking for the return side.

 

another thought...some filters are just one direction. i know these have an in and and out but some will still work if they are backwards and some wont....i bypassed my filter to rule it out. prolly frowned upon but when your on the side of the road anything is worth trying

 

Yeah I just clamped the return line the best I could and it seemed to get a lil better. A mechanic friend told me if it got a little better when clamping the return line then it could be the regulator or an injector stuck open/ closed. The regulators brand new so right now it's getting new injectors as soon as I can make to the junkyard. I'm going to put the same neon injectors that were in it before. And yes I did check the hose clamp on the pump several times. Also, while replacing the fuel filter again, I blew out the fuel lines with some air. At this point, if the injectors don't fix it, I don't know what will. As always, any suggestions will help lol. Thanks

 

Yeah I double checked the in and out thing. That's fine. But I did think about the fuel pump ballast resistor. I know it controls noise and the amount of ohms going to the pump. Maybe it could be some type of fluke with it? Idk I won't be able to check it till I put in the new injectors.

 

New injectors aren't going to fix a pressure problem. With the key on, after a couple of seconds you should be up to full pressure. If you are still at 18 psi, you MUST concentrate on that.

 

thats what i thought, but the mechanic said diff. i do think the injectors could do something to the pressure if an injector was stuck open correct? im gonna get the ballast resistor tomm. thatll be the last possible thing having to do with the pressure. i just find it weird that the old pump tested at 18psi as well as the new pump. could the resistor just not be giving the pump enugh ohms for it to pump "hard" enough.

 

For static (not running) pressure, the injectors are not even in play. That is why I do not think this is an injector issue. Your fuel system should get the pressure up to FULL fuel pressure spec, even before cranking the engine to try to start it.

Just to be sure you aren't chasing your tail, I would verify this pressure with a different fuel pressure gauge.

 

i will do so tomorrow. but i still know it has to be a fuel problem no matter what the gauge says. it starts and idles fine. but then it gradually slows rpm's then dies. spark or compression wouldnt have anything to do with that. only thing i could remotely think of that is relative to this is the coilpack. maybe when its under load it acts up? but idk thats a far guess