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Classic/Antique Car Repair/1973 oldsmobile cutlass supreme 2 dr
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Question
The fuel pump was leaking so I replaced it and now it starts but will not stay running it shuts off shortly after.
Hi Francisco:
My first question is, "did you used the exact same model fuel pump or at least an after-market equivalent? If not, the problem may very well be the PSI (Fuel Pressure) the pump needs to produce is too low for your car.
Engines Up To 400 Horsepower, should use fuel pumps that produces 8 PSI Of Pressure, which delivers Over 80 Gallons Per Hour. So, if your fuel pump is not pushing fuel to the carbs fast enough, that should be the reason it is cutting off.
Also, you may need to change the fuel filter. It could be restricting the fuel pump's ability to push fuel to the engine.
Verify the PSI rating on your pump (base on your engine horsepower) and if the fuel pump meet the PSI rating for your car, then replace the fuel filter.
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| Rating(1-10) | Knowledgeability = 8 | Clarity of Response = 8 | Politeness = 10 |
| Comment | I know I baught the correct fuel pump and the filter is fine but I just found out that there is a hook in the cam shaft that it rests on when you put it in and that hook was actually down so I have been told to bring the hook up and reinstall the fuel pump. Thank You for you advice and if you any more feed back please let me know. | ||
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Vern Bullock
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Visit my website at: http://www.classytransportation.com/ I can answer most questions about autos built in the 60's 70's and 80's. Specifically, Lincolns, Rolls Royces and the Excaliburs. Mechanical issues and technical questions are my expertise. I also have a general knowledge of most older automobiles. Keep in mind, I can only provide answers if the questions are very specific and complete. Without details, I can only speculate and that's not good for solving your problem.
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