Question about 1998 Chevrolet Blazer

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No fuel pressure after it sits over night

3 new pump, after it sits over night I have to crank it about 10 time on and off, it will hold 55 psi for hours

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  • Expert
  • 62 Answers

Sounds like its bleeding back to the tank. try putting in a 1 way valve.

Posted on Dec 29, 2013

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Posted on Jan 02, 2017

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  • 66 Answers

SOURCE: hard start

Its your fuel pump.I had the same plomblem not too long ago.I was spraying either in to start it.I have a 97 chevy truck witch requires 65 psi to start and 55 to run properly.You need to find out much psi you need to start it.You can probaly look in your manual or just make a few calls.My truck had 55 psi and it ran fine i just had to get it running first.Good luck.I wonder if that fuel pressure regulator was a waste of time like it was for me.

Posted on Nov 25, 2008

  • 220 Answers

SOURCE: fuel pressure problem.I replaced the fuel pump on 2001 chevy s-10

Most fuel injected vehicles have a relay that controls the fuel pump so after the ignition switch has been on for about 5 seconds and the engine is not running, the fuel pump automatically shuts off.
I don't know what your original problem was, but I think if the car runs normally, you have probably fixed your problem. If you don't have a manual, you can probably go to the library and take a look at a manual that covers your vehicle.

Posted on Jan 16, 2009

GM Elec
  • 1000 Answers

SOURCE: 2002 blazer 4 wheel drive hard to start

If the pressure is slow to rise, you should consider changing the fuel filter if it has not been done in the past 30,000 miles.
Next, disconnect a spark plug and check for spark while engine is cranking. Use a spark tester or old spark plug grounded to the engine block.
Let me know.
Regards,

Posted on Mar 23, 2009

lhjh86
  • 60 Answers

SOURCE: 98 s-10 2.2 Fuel Pump Pressure

40 psi good lower than that bad

Posted on Apr 21, 2009

morrison888
  • 4 Answers

SOURCE: 1989 Chevy Cavalier z24

i think you have the rong elecricale cords
or batterys or its oil

Posted on Aug 10, 2009

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Jan 24, 2010 | 1992 Subaru Loyale

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Wont crank unless u spray starter fluid in. Cleaned air flow sensors. runs fine as long as u hold down the gas. No idling.


Check The Fuel Filter And Your Fuel Pump Its The Problem %99 Of The Time.
Sincerely,
Michael Scott

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May have small fuel leak or fuel pump sending unit leak down. Or fuel pump psi low.

After 30 minutes try this turn key on. do not try to start wait 10 seconds turn key off then on again 10 seconds then try & start if it starts right away fuel system is losing PSI either back through the fuel pump or a leak in line. If you can find no leaks would suggest replace fuel pump & assembly.
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Hard start


Its your fuel pump.I had the same plomblem not too long ago.I was spraying either in to start it.I have a 97 chevy truck witch requires 65 psi to start and 55 to run properly.You need to find out much psi you need to start it.You can probaly look in your manual or just make a few calls.My truck had 55 psi and it ran fine i just had to get it running first.Good luck.I wonder if that fuel pressure regulator was a waste of time like it was for me.

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CRANKING BUT DELAYED STARTING


Test for proper fuel pressure with a test gauge on the fuel rail, most throttle body injection cars (TBI) are between 13 psi and 17 psi. and most (DPI) direct port inject systems are between 40 psi and 55 psi. If no or little fuel pressure is observed and there is 12 volt power present at the fuel pump, the fuel pump has failed and needs replacing.

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