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Gary, ASE Certified Technician
Category: Car
Satisfied Customers: 916
Experience:  Senior Technician
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I have a 97 chev van 350,when it is warned up and i turn

Customer Question

i have a 97 chev van 350,when it is warned up and i turn off,i have to pump the hell out of the gas to get it to start,when it is cold it fires right up
Submitted: 1 year ago.
Category: Car
Expert:  Gary replied 1 year ago.

Hi Tom,

Can you give some more info please?

EFI or carburetor?


Customer: replied 1 year ago.
Expert:  Gary replied 1 year ago.

Hi Tom,

Sounds like the engine is flooded from one or more weeping injectors.

How long does it need to be turned off while warm?

Does it blow black smoke for a short period when it eventually starts?


Customer: replied 1 year ago.
i have to go for now,but i do want to talk over phone if you can,no problem on $26.00.i do know that as soon as it cools it fires right up,the smoke im not sure,i will check it out!.what would be the best time for you to call?
Expert:  Gary replied 1 year ago.

Hi Tom,

I'm in Australia, and I think the phone call feature is available within the US only.

I feel I can help you without talking on the phone.

I you need to open the throttle a lot when the engine is hot, more than likely the engine is half flooded, like a percolating carburettor, from either weeping injectors or some other electronic issue.

At least you have proved the fault by opening the throttle. Once the engines starts, it performs normally for the rest of the driving cycle?

I would fit a fuel pressure gauge while the engine is hot, and monitor the pressure after shutdown. Then sparkplugs out for inspection. Let the engine sit for 20 mins. Crank the engine to see which cylinders the fuel went into.

Injectors out, ultrasonic clean and flow test, refit all parts and test vehicle.


Expert:  Gary replied 1 year ago.

Hi Tom,

Have you had a chance to perform the tests I have described above?

I hope my advice has been of assistance to you.