SPONSORED LINKS

Stalls out 45-50 MPH uphill?

Tiny
DONUTOLYMPIAN
  • MEMBER
  • 1976 JEEP CJ7
  • 4.2L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 94,000 MILES
Okay, so first let's cover what I've done to the vehicle:

HEI distributor
New mechanical fuel pump
New fuel filter
Weber 38/38 carburetor

So, all that said, it cranks up great, runs great up to 30ish MPH.

Every time I go uphill (sometimes when on level ground) at 45ish MPH the engine starts sputtering and stalling, lunging and slows down.

I've got no idea what to do to fix this, I'm pretty much out of ideas. It's got fire, fuel, and air without issue but uphill it suddenly acts like it doesn't.
Images (Click to make bigger)
Thumb
Thumb
Thumb
SPONSORED LINKS
Tuesday, March 28th, 2023 AT 2:28 PM

3 Replies

Tiny
DONUTOLYMPIAN
  • MEMBER
  • 3 POSTS
Not sure why the pics are upside down, they appear right side up on my phone, sorry.
Was this
answer
helpful?
Yes
No
Wednesday, March 29th, 2023 AT 12:09 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,356 POSTS
No problem, I have seen the fuel line going to the tank develop a small hole or crack which allows air to engine the suction side of the pump which allows the fuel delivery to be limited. I would replace this fuel line which should take care of the problem.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
+2
Wednesday, March 29th, 2023 AT 12:16 PM
Tiny
DONUTOLYMPIAN
  • MEMBER
  • 3 POSTS
Awesome, thanks for the response I'll check it out!
Was this
answer
helpful?
Yes
No
Wednesday, March 29th, 2023 AT 2:01 PM

Please login or register to post a reply.

Related Engine Stall While Driving Content

Is it Safe to Drive Check Engine Light?
VIDEO
Is it Safe to Drive Check Engine Light?
Instructional repair video
Engine Stalls While Driving
GUIDE
Engine Stalls While Driving
An engine that stalls while driving and then starts back up again, either immediately or after a short time is different from an engine that just wont start or if the...
VIEW MORE

Sponsored links