fuel pump

[recon]

my 89 is hard to start after sitting for serval hours, i think it is the fuel pump, i am getting 38 lbs of pressure. i have been told that i need 60to70 lbs. how many pound should should it read?

[JWC]

I had the same hard start problem before and after I changed my fuel pump, sending unit, plugs, plug wires and fuel pressure reg. I never did find out the what was wrong, Good luck finding this problem, and post results.

[Guest F14CRAZY]

38 lbs is good, anything THAT much higher would not be a good thing. How long does it hold this pressure?

[Guest mongeonman]

I had a similar problem,took to much time to start,what i had to do to get it to start faster was to crank it for 2 seconds,turn it off and crank again and it would start right a way.Could not find what was wrong,the other day i changed the ICM cause it was leaking a grey paste and it cured the starting problem.

[D-a-n-i-e-l]

check the pressure and then turn off the car, if the pressure drops your check vaulve is not working. I believe the check vaulve is intergrated into the fuel pump. Some one please correct me if I am wrong

[Ronnie]

Try turning the key to the "run" position for two or three seconds before turning the key to "start". When you first turn the key to "run" the ECU turns on the fuel pump for a few seconds to build pressure in the fuel rail and then turns off. Give it a little time to build pressure before starting.

Also don't hold the gas pedal down while starting. If you do the ECU will go into "clear flood" mode and shut down the amount of fuel that is injected.

[Guest imported_barra]

I had the same problem. It turned out to be the ECM that needed replaced. The temperature gauge read 140 degrees when it was winter and the fuel injection system delived enough fuel to start the engine at that temperature. Using the preceedures described in the other posts got it started for a while before it needed towed.