Skip the auto shop - Our mechanics make house calls

Q: Shutting off and difficult startup - 1978 Jeep CJ5

asked by on

After having replaced the rods and lifters, I drove my jeep briefly and it just shut off. I checked the jeep, and found the fuel filter to be dry. So, I had the fuel pump replaced. The jeep now runs but not well. Upon startup, it begins shaking in the carburetor area so I have to get the engine running and get out quickly to cover the carburetor. When I cover it with my hands, it works well. In order to rev the engine up, I have to play with the throttle. I would get some more air if I move my fingers a bit. But, if I move the throttle, the jeeps shuts off. When it idles, there is a loud air sucking noise. What could be the issues?

A: Hey there, thanks for writing in. It sounds...

Hey there, thanks for writing in. It sounds like you may have a large vacuum leak. Ensure the PCV system is hooked up correctly and that there are no broken or damaged vacuum lines. A smoke check of the induction system may need to be carried out to find the source of the air leak. You may want to enlist the help of a professional, such as one from YourMechanic, who will have the tools and expertise to pinpoint the source of the unmetered air leak and diagnose the stalling issue.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Car stopped randomly and didn't drive afterwards

Hello, thanks for writing in. The computer will go into a failure mode and may not allow the electronic throttle to open if it detects a major computer or sensor fault. There can be many possible failures that will cause...

Q: Charning issues, new battery and alternator

Hello there. There are a few potential causes for why the car would have charging faults even after the alternator is replaced. The most common would be the battery cable, shorted harness, battery, or a failed alternator. The first thing...

Q: Car Won't Start went

Hello, thanks for writing in about your Ford Explorer. You would know if the alternator was at fault if it died while you were driving it and then would not crank. I would suggest replacing the battery and then have...

Related articles

How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.