Quadrajet stalls at high speed

Okay - will drive it tomorrow, thank you!

 

Having the same driving issue. However, I recently replaced the electric fuel pump and noticed the rubber elbow didn't look as fresh as it should so I replaced it with a metal elbow. But if no other issue shows up I may need to double check the elbow. Thanks again, Jason!

 

Hooked up the fuel pressure gauge in place of the in-line fuel filter and in front of the carb filter and found that when the engine starts it is at 7 lbs and as I drove in the subdivision at 25 to 35 mph the pressure gradually dropped to 0 lbs by the time I reached a distance of six blocks.
I shut the car off for a few minutes and drove it again and got the exact same results. No kinks in the fuel line hose or dents in the steel line.
Not sure what to check next?

 

Vent the gas tank cap and repeat the process, if it remains the same then replace filters and repeat, then replace pump, could have a slight tear in diaphragm, repeat. Elimination process always finds the problem....

 

The fuel pump was just replaced with an alternative pump that is about the same size and rated for 40 GPH that was suggested by someone who had good luck with it in the same car. But maybe there is a problem with this unit.
I was told by OPGI that 38 GPH is sufficient. Do you have a suggestion for a pump?

 

Thank you, I will contact him.

 

Went to Yardley's website and the fuel pump he suggested is the one that I have - the EP297/ Airtex E2008. I sent him an email, but is was returned as not deliverable.
I am gong to bench test the fuel pump to confirm the GPH output.

 

This may seem elementary, but I suppose it's good to think about. How much gas do you have when this happens, and would the fuel pickup ever get uncovered at cruise rpm?

 

I appreciate any and all suggestions! The gas tank is never below a 1/4 tank and is currently at 3/4 full. I have blown out the fuel line and it is all clear. I measured the fuel pump output and confirmed it is at 40 GPH at the carburetor.
So I will replace the carb filter again and look for any debris in the carb.

 

I straightened out a tight bend in the fuel line hose. I blew out the fuel line with high compressed air. I also replaced the carb and inline filters - again. Now it appears to be running fine! Looking forward to taking it out for the first time this weekend.
Thanks again to all for your input and suggestions!

 

I think it was a combination of the fuel line tight bend and debris that got into in the filters and possibly carb. After cleaning the fuel line, straightening the bend and putting in new filters the car ran better, but as I drove it on the highway it started running even better still and probably cleared out some debris in the jets.

 

First thing you should do is throw out that clear in line filter. Those are absolutely a piece of garbage. Then if you follow what Larry is advising you you should be able to nail your woes.

 

ha haaaaaa. Im totaly late to the party.