Not starting?

Tiny
POWELLGIOIEE
  • MEMBER
  • 1995 CHEVROLET CORSICA
  • 3.1L
  • V6
  • 2WD
  • AUTOMATIC
  • 169,000 MILES
Okay. I replaced the fuel pump twice and bought a bad one the first time. Now I'm getting gas to the cylinders, but it acts like it wants to start but just don't seem to hit and run it starts up for just like a second like it's got a bad miss. That's the best way I can explain it. I thought it sounded like an older car trying to start when it has been flooded, sputters but it doesn't. Got any ideas? Oh, can I unplug the crank case sensor and start the car? Will it hurt anything to do this to see if that's my trouble and is it looking at the motor left side towards bottom on the side of motor nearest to the front of car and do you still use a timing light on this year of car if so, where's the timing marks thank you so much.
Friday, September 22nd, 2023 AT 12:33 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,124 POSTS
Hi,

Have you checked for diagnostic trouble codes? If not, start with that. Scan the computer to see if any are stored. They will point us in the right direction.

If you are unable to do that, record it cranking and upload it for me to hear.

Next, have you checked and confirmed the fuel pressure is within the manufacturer's specifications? If not, that should be done. We may have a faulty fuel pressure regulator that is flooding the vehicle.

Here is a link that shows how it's done:

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

If you look below, I attached the manufacturer's fuel pressure specifications for you.

You also mentioned the crankshaft position sensor. Disconnecting it won't hurt the vehicle, but it certainly shouldn't run.

Let me know

Joe

See pic below.
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Friday, September 22nd, 2023 AT 1:36 PM

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