s10 crank no start

Asked by Aug 12, 2016 at 12:11 PM about the Chevrolet S-10

Question type: Maintenance & Repair

97 s10.was driving fine.stop at store start back
up.back out and just died..try to start,but just
cranks...sprayed carb start in air filter hose started
up but died...turn key to cycle can hear fuel pump
turn on..but not ever time i cycle on.changed fuel
filter..question when cycling on do you have to
wait à minute before cycling or Should you hear
fuel pump every time you cycle on.??and i have à
fuel pressure gauge from harbor frieght,would
That be suffisent to use to test for bad fuel
pump...please help..

14 Answers

100,545

You have to wait a minute or between key cycles. If you got the high pressure tester then it will work, the low pressure tester will blow apart.

How can I tell if it's a high or low pressure tester. It's from harbor freight

The brand

is Pittsburgh says it goes up to 100psi..

100,545

That is the high pressure model. It should work rather well in this case.

Ok fuel pressure should be 55 psi and up right... And hold... And if it drops, That means pump is bad????

100,545

If it drops while it is running then yes the pump is bad. If your doing the leak down test and the pressure drops fairly quickly it could either be a bad pressure regulator or the injectors are leaking.

Ok.the problem is That its not starting Just cranks.... It Just died on me one Day..was running fine stop AT the store and started up backed out and it shut off.. So by checking fuel pressure Will í be able to tell if its the pump. With out it starting or running .

100,545

Yes it should pump up and hold pressure for awhile, usually around 5 to 10 before it starts to drop off.

Ok test fuel pressure and it stayed AT 30 psi.. Tried to crank But no start did drop down for awhile but stayed AT 30.so That means bad fuel pump right.. Or is there some thing else í should check

Low pressure, right bad pump???

100,545

I assume it is the Vortec engine so 30 is not enough, the pressure should jump to 60-65 when you turn on the key, and not drop below 50 in 10 minutes, so low pressure = bad fuel pump, fast bleed down= bad fuel pressure regulator. HTH

Got another question. Í Was thinkin of ordering the fuel pump online... Is That a bad idea and which is an ok Brand..

100,545

If you going to order it online I recommend you get the entire assembly and not just the pump and strainer,I've seen to many get the wrong pressure pump. as far as brands, Delphi is a good one, Bosch, and of course OEM if all else fails to come up.

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