After getting bad gas engine spits and sputters

Tiny
TRACIJO
  • MEMBER
  • 1993 GEO TRACKER
  • 4 CYL
  • 4WD
  • MANUAL
  • 150,000 MILES
We got bad gas two weeks ago. It started sputtering not even a mile from gas station. Changed fuel filter, pump, cap an button cleaned the plugs. Wires an plugs looks fairly new. Siphoned the tank out an put new gas in. It still spits an sputters. Idles fine but once put in gear it doesn't want to go. Today actually had to put in 4wd to make it up a small incline. Any ideas? Thank you
Do you
have the same problem?
Yes
No
Saturday, December 22nd, 2018 AT 6:36 PM

3 Replies

Tiny
JOE F
  • EXPERT
Hi and thanks for using 2CarPros.

First, I would recommend checking the vehicle for trouble codes. They can point you in the correct direction very easily. Because of the model year, the vehicle has an OBD1 system. Therefore, you don't need a scanner to get codes. Follow this link. It shows how to retrieve the codes and what each one means.

Do this and let me know what codes you find. If you have lost that much power, I question if there is a plugged catalytic converter or low fuel pressure. That should show up with the codes.

https://www.2carpros.com/articles/buick-cadillac-chevy-gmc-oldsmobile-pontiac-gm-1983-1995-obd1-code-definitions-and-retrieval-method

Take care,
Joe
Was this
answer
helpful?
Yes
No
Saturday, December 22nd, 2018 AT 8:04 PM
Tiny
TRACIJO
  • MEMBER
Thank you for responding. Both my husband and I are at our wits end. I will let him know about this and will give you the verdict. It acts like it's got a choke half stuck on it.
Was this
answer
helpful?
Yes
No
Sunday, December 23rd, 2018 AT 5:56 AM
Tiny
JOE F
  • EXPERT
That sounds like it is getting too much fuel. It could be related to fuel pressure, a leaking injector, and other things. Since you mentioned the half choke concept, it would be a good idea to check fuel pressure. It may be too high due to a faulty regulator or the regulator itself could be drawing fuel through the vacuum causing it to run too rich.

Here is a link that shows in general how to check both the pump pressure and the regulator:

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

Here are the specs for the pump:

FUEL PRESSURE
1. Ignition "OFF" for 10 Seconds.
2. With ignition "ON," engine "OFF" and fuel pump running, pressure should be 240-280 kPa (34-41 psi).

Let me know if this helps or what you find.

Take care,
Joe
Was this
answer
helpful?
Yes
No
Sunday, December 23rd, 2018 AT 6:07 PM

Please login or register to post a reply.

Sponsored links