The car is running rich and it stalls?

Tiny
SHOWENVANWYK
  • MEMBER
  • 1997 FORD FIESTA
  • 1.3L
  • 4 CYL
  • 2WD
  • MANUAL
  • 290,000 MILES
The car is running rich, and it stalls. Today I found that there is fuel in the oil sump I have replaced the Rings. And Alternator doesn't give enough charge.
Thursday, January 30th, 2025 AT 2:00 AM

5 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 49,592 POSTS
Chances are you have a fuel injector that is stuck open, or the fuel pressure regulator is leaking. I would remove the vacuum line from the regulator and see if fuel is present, if so, the part is bad and needs replacement. If that is okay remove the spark plugs to see if any are flat black, this will be the cylinder the injector needs to be replaced at. Please go over this guide as well:

https://www.2carpros.com/articles/why-an-automotive-engine-will-run-rich

Here is the location of the fuel pressure regulator so you can check it out. Check out the images (below). Please upload pictures or videos in your response of any problems so we can see what to help you with.
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Thursday, January 30th, 2025 AT 12:08 PM
Tiny
SHOWENVANWYK
  • MEMBER
  • 9 POSTS
Thanks I will check and come back to you.
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Thursday, January 30th, 2025 AT 12:11 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 49,592 POSTS
Sounds good, have a nice weekend!
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Friday, January 31st, 2025 AT 9:57 AM
Tiny
SHOWENVANWYK
  • MEMBER
  • 9 POSTS
I got the codes
P0122
P0443
P0113
Where is the purge valve does it have a purge valve?
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Thursday, February 6th, 2025 AT 11:18 AM
Tiny
CARDOCTOR74
  • MECHANIC
  • 55 POSTS
The P0113 code indicates that the PCM sees an issue with the Intake Air Temperature Sensor. Have you checked to make sure your Mass Air Flow Sensor is plugged in correctly and that there are no broken wires at the connector. The P0122 shows as a problem with the throttle body or throttle position sensor. The first thing for these cause I would check is to make sure you have no vacuum leaks. If there are no vacuum leaks, then I would focus on the mass airflow sensor and cleaning the throttlebody and see if these codes do come back. If they do come back, then I would start by testing and replacing the mass airflow sensor and the throttle position sensor. As for the p0443 most of the time, the purge valve does fail. It’s located below the air filter. I would check to make sure there’s no damage to vacuum lines. Wires are connected to the valve. I’ve attached a picture of the location.
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Thursday, February 6th, 2025 AT 5:38 PM

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