96 blazer no start please help tring to work on it friday night
#11
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once it starts running the fuel pressure goes up to like 56 - 62
#12
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Yea fuel pump is way more plausible on this myth busting event here I will now stick to fuel pump!!!
#13
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alirte guys thanks you very much for all ur help ill put a pump in tommrow night so ill let u know how it works out
#14
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As riddle said, how does the pressure hold after you turn the key off? Does it drop?
The FPR is off the back side of the injection spider under the plastic upper plenum. The SCFI motors don't have anywhere near the problems with the FPR that the CPI motors had.
One other way to lock it down to the pump would be to remove the fuel filter and hook up a pressure gauge on the supply line back there. This would eliminate the FPR from the equation. If your pump does not reach 60psi, then you either have a pump or a voltage supply problem...
The FPR is off the back side of the injection spider under the plastic upper plenum. The SCFI motors don't have anywhere near the problems with the FPR that the CPI motors had.
One other way to lock it down to the pump would be to remove the fuel filter and hook up a pressure gauge on the supply line back there. This would eliminate the FPR from the equation. If your pump does not reach 60psi, then you either have a pump or a voltage supply problem...
#15
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it stay at what it was on at as when i turned the key on
#16
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ORIGINAL: swartlkk
The SCFI motors don't have anywhere near the problems with the FPR that the CPI motors had.
The SCFI motors don't have anywhere near the problems with the FPR that the CPI motors had.
![Wink](https://blazerforum.com/forum/images/smilies/wink.gif)
it stay at what it was on at as when i turned the key on
#17
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what do u think
#18
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whats scfi mean
#19
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I am still going with a pump issue but to make sure do the test Swartlkk suggested to make sure so your not just swapping out part after part!!!
#20
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i dont have a presure tester like that just the one that hooks up to the valve