fuel pump pressure specfications
dieter
07-26-2009, 07:59 PM
What should the working fuel pressure be on a 1990 Buick 3800 engine?. Is there a special procedure to checking the pressure? Should one ever use compressed air to blow out the fuel line of possible foreign matter such as rust, specifically, from the fuel filter back to the tank (where the fuel pump is located)?
How can I get this answer directly to my email : [email protected] ?
How can I get this answer directly to my email : [email protected] ?
maxwedge
07-26-2009, 08:24 PM
You need a fuel pressure gage attached to the port on the fuel rail (35-40) psi., I would not recommend blowing out the fuel lines, back to the pump.
big white bufflo
07-27-2009, 10:01 AM
the fuel pump is located in the tank
happydog500
07-27-2009, 04:31 PM
If we email you the answer, how will others reading the forums benefit?
Chris.
Chris.
maxwedge
07-27-2009, 07:44 PM
If we email you the answer, how will others reading the forums benefit?
Chris.
Agreed and that is the point of our forums!
Chris.
Agreed and that is the point of our forums!
Jrs3800
07-29-2009, 12:12 AM
37-41 Psi is the general range for the Vin C 3800... A little lower or higher is ok..
happydog500
07-29-2009, 12:44 AM
My fuel pump went out today. Have a big trip planned for Thursday. :frown:
104* highs don't help. I drove 15 miles home by turning the key a few times to get the pump to pump some gas. Started it up, drove and coasted. Did it all over and over again the the whole way.
Through town, I was stopped some time blocking traffic.
Chris.
104* highs don't help. I drove 15 miles home by turning the key a few times to get the pump to pump some gas. Started it up, drove and coasted. Did it all over and over again the the whole way.
Through town, I was stopped some time blocking traffic.
Chris.
Jrs3800
07-29-2009, 03:05 PM
My fuel pump went out today. Have a big trip planned for Thursday. :frown:
104* highs don't help. I drove 15 miles home by turning the key a few times to get the pump to pump some gas. Started it up, drove and coasted. Did it all over and over again the the whole way.
Through town, I was stopped some time blocking traffic.
Chris.
Thats True... On mine I had noticed slight Ping from the motor... Had the scan tool on it and started watching knock counts and Knock Retard.. When I would run lean the knock counts would go through the roof and the KR was 6-10 Degrees iirc.. The PCM could no longer adapt to the lower fuel pressure... I was seeing as low as 30-32 at part throttle when it should have been at least 45 Psi.. At that point I changed out my fuel pump as this happened 1 week before my 1000 Mile road trip:headshake:)
104* highs don't help. I drove 15 miles home by turning the key a few times to get the pump to pump some gas. Started it up, drove and coasted. Did it all over and over again the the whole way.
Through town, I was stopped some time blocking traffic.
Chris.
Thats True... On mine I had noticed slight Ping from the motor... Had the scan tool on it and started watching knock counts and Knock Retard.. When I would run lean the knock counts would go through the roof and the KR was 6-10 Degrees iirc.. The PCM could no longer adapt to the lower fuel pressure... I was seeing as low as 30-32 at part throttle when it should have been at least 45 Psi.. At that point I changed out my fuel pump as this happened 1 week before my 1000 Mile road trip:headshake:)
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