Fuel Pumps
Chevy Blazer
Chevy Blazer S-10

How do you test fuel pump pressure on 1999 Chevy blazer?

Answer

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Wiki User
02/22/2007

get a fuel pressure tester on the fuel line going to throudle body there is a fitting looks like a valve stem twist off cap screw on the tester . hold tester so you can see it and turn key but dont start the motor if it reads below 54 pounds its bad. check with auto store on pressure to be sure im close.