Sporadic starts, fuel system issue?

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ShoMe1More

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My car is a stock '90.

I have an issue sometimes when I start the car up, with more frequency lately. After it revs past 1,500 and drops back down, sometimes it wants to stall out and I have to tap on the gas to get the revs to even out at idle. And sometimes it doesn't even out, revs don't sustain, and it shuts off.

I also have had issues when I take the gas cap off with a lot of pressure hissing out. I think the fuel pump does make the electronic engage sound when I initiate the ignition before turning it over.

Could it be as simple as needing a good carbon cleaning fuel additive, or as major as a dying fuel pump?

Thanks
 
Last edited:

deercrusher

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You can test the fuel pressure at the fuel rail by using a cheap fuel pressure gauge available from Harbor Freight.
 
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