My Willys 3A and 3B Community

How To Join => Once You've Joined => Topic started by: msk on April 22, 2021, 03:24:39 PM

Title: engine dept.
Post by: msk on April 22, 2021, 03:24:39 PM

I need some help in trouble shooting a back fire issue. My cj3b willys runs great at idle and low rpm while it was in the garage. Took her for the first road test. As soon as I give her more gas to increase power (slight incline) it starts back firing. Noise is so loud I'm concerned I will blow her new exhaust system. Any suggestions?

Title: Re: engine dept.
Post by: oldtime on April 22, 2021, 05:33:05 PM

Welcomed msk.
We know nothing about the service history of your engine.
There is a small multitude of conditions that effect your trouble.
Therefore you need to follow the factory tune up sequence.
If you have a proper service manual then follow the sequence as printed.
This should get you started.....
(https://www.mywillyspics.com/images/2021/04/22/C0612724-77B4-4276-B018-04E7E8AFB118.jpg)

Title: Re: engine dept.
Post by: Rus Curtis on April 22, 2021, 05:41:15 PM

Okay, my bad.  I'll take the hit - probably should have been clearer.  May need to get an administrator's help in moving this down to the Engine section.



This is where I was thinking first too.  Tune up status and what you have.  As we get deeper we'll know more and can help more.

Title: Re: engine dept.
Post by: oldtime on April 22, 2021, 05:47:50 PM

(https://www.mywillyspics.com/images/2021/04/22/8C3C32A3-F540-40AD-9984-7A398A68C380.jpg)

(https://www.mywillyspics.com/images/2021/04/22/EBCEF38D-A338-4BD5-9AA0-CDF0E08AD726.jpg)