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What's the formula of gauge pressure?

I have a 1988 Pontiac Firebird formula. Engine was replaced with a 350 TBI. Car starts and dies immediately. Fuel pump runs and If you disconnect fuel line, it flows a large volume of fuel. However, my fuel pressure gauge does not register pressure.

  • Answer:

    hi bud, i have an 88 formula 5 speed, 350 tpi, that i bought with the same problem. i replaced every thing from the fule pump to the computer,still had the problem. after tons of money i took it to our comunity college. they found that the plug on the back of the computer was bad. after they replaced it, it ran fine. hope this helps. email me if you need more imfo at you may also have air in your line. bleed the air out, air core is on fuel rail, bleed there

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ok first off you need to check the fuel pressure at the throttle body, tbi motors only require 8-13 psi i believe, if it has fuel pressure there take off the air flter and look to see if fuel is being squirted into the throttle body (should be a fine mist out of both injectors) if it is not then the injectors may need to be cleaned or replaced

zx9fire

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