What is wrong with my car? What do I need to replace to make it run better?

DIANEWING

MEMBER
1992 FORD CUSTOM
19,600 MILES

My car back fires when cold it also is slow to gain speed, and when spead increases it looses power

Friday, March 23rd, 2012 AT 12:26 AM

3 Replies

RASMATAZ

MECHANIC
75,992 POSTS

Does it have a check engine light and when was last tune-up??

Sounds like lean misfire-check the fuel pressure if its within specs-start here and also go to this link: https://www.2carpros.com/articles/engine-backfires-while-running and https://www.2carpros.com/articles/engine-misfires-or-runs-rough

SPONSORED LINKS

Was this

answer

helpful?

Yes

No

Friday, March 23rd, 2012 AT 12:34 AM

DIANEWING

MEMBER
2 POSTS

It just had a tune up, the check engine lite comes on only when the problem happens then goes away. We know it is running lean but dont know what to fix to stop it from runnung lean

Was this

answer

helpful?

Yes

No

Friday, March 23rd, 2012 AT 12:40 AM

RASMATAZ

MECHANIC
75,992 POSTS

Lean fuel condition could be caused by one of the following below:

1. Vacuum leaks

2. EGR and PCV valve.

3. Low fuel pressure.

4. Dirty fuel injectors.

5. Mass Air Flow Sensor.

6. Oxygen Sensor.

Was this

answer

helpful?

Yes

No

Friday, March 23rd, 2012 AT 4:28 AM