FUEL PUMP

GRANNY GRANT

MEMBER
1994 CHEVROLET S-10
4.3L
6 CYL
2WD
AUTOMATIC
78,000 MILES

How much PSI should it pump when the ignition comes on?

Friday, August 5th, 2016 AT 9:46 AM

9 Replies

WRENCHTECH

MECHANIC
20,761 POSTS

What is the eighth digit of the VIN#?

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Friday, August 5th, 2016 AT 11:30 AM

GRANNY GRANT

MEMBER
14 POSTS

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Friday, August 5th, 2016 AT 1:18 PM

WRENCHTECH

MECHANIC
20,761 POSTS

That is a high pressure system. The spec is 55-61 PSI and it has to remain in that range. You also want to pay attention to what the pressure does when the key is shut off. Does it hold the pressure or immediately leak down?

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Friday, August 5th, 2016 AT 1:20 PM

GRANNY GRANT

MEMBER
14 POSTS

I have bought two new pumps and called several auto stores and was told the PSI should be 14 and the truck still will not start.

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Friday, August 5th, 2016 AT 1:27 PM

GRANNY GRANT

MEMBER
14 POSTS

Both new pumps only pump 14 PSI.

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Friday, August 5th, 2016 AT 1:29 PM

WRENCHTECH

MECHANIC
20,761 POSTS

No, it should not be 14. That is for a TBI engine but you have a Vortec. That is why I asked for the VIN code. You may be buying the wrong pumps.

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Friday, August 5th, 2016 AT 1:29 PM

GRANNY GRANT

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14 POSTS

Thank you for your help.

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Friday, August 5th, 2016 AT 1:36 PM

GRANNY GRANT

MEMBER
14 POSTS

Can you tell me what fuel pump to get?

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Friday, August 5th, 2016 AT 1:44 PM

WRENCHTECH

MECHANIC
20,761 POSTS

The one that is made for your vehicle. You have to be giving them some wrong information. Make sure they are aware you have engine code "W". That matters.

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Friday, August 5th, 2016 AT 1:46 PM