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  Topic Review (Newest First)
08-05-2021 04:03 PM
bruinjeeper cigar smoke in the booster line ?

08-05-2021 01:01 PM
Sty181 Check each line from end to end for cracks , splits ,cuts and rubs.
08-05-2021 09:36 AM
CJ7 Trasher
CJ7 Trasher

Ok, so just as a thought. What would be a good way to test vacuum lines? I have checked manifold leaks by using car starter aerosol, if there is a leak, the car would rev up. But if we where to check a vacuum line it would be not effective. How would you guys do it?
08-04-2021 06:57 PM
fishadventure
Quote:
Originally Posted by CJ7 Trasher View Post
Reading trough, i see mentioned "Vacuum hoses should be fine, I sprayed them down with soap mixture and saw no bubbles." I guess its a mistake, correct?.
Missed that detail

Vacuum hoses make no bubbles cuz they suck

We all float down here.
08-04-2021 10:14 AM
CJ7 Trasher Reading trough, i see mentioned "Vacuum hoses should be fine, I sprayed them down with soap mixture and saw no bubbles." I guess its a mistake, correct?

Might try to change them just in case.
08-04-2021 05:40 AM
fishadventure
Quote:
Originally Posted by Azhunter1 View Post
Quote:
Originally Posted by fishadventure View Post
You back-blew the fuel filter?
No, I disconnected the fuel lines from the tank and at the frame rail in front and blew them out. You have a pickup screen in the tank too.
Forgot for a moment this was carb’d
08-03-2021 08:42 PM
Azhunter1
Quote:
Originally Posted by fishadventure View Post
You back-blew the fuel filter?
No, I disconnected the fuel lines from the tank and at the frame rail in front and blew them out. You have a pickup screen in the tank too.
08-03-2021 11:42 AM
fishadventure You back-blew the fuel filter?
08-02-2021 09:33 PM
Azhunter1 You might try checking the fuel lines on the frame rail, I had a bunch of crap built up in mine and was doing the same thing. I blew about a 100psi of air thru them from the front to the back ( after taking both lines loose from the tank) then back to front and have not had anymore problems.
08-02-2021 08:10 PM
CJ7 Trasher Its being a while, but what was the outcome? Vacuum hose or fuel level in the carb?

Thanks!
04-11-2021 08:37 AM
Boojo35 What you are describing is a fuel starvation issue. Your carb bowl gets low enough that your Jeep begins to only deliver fuel with each pulse from your mechanical fuel pump. Sometimes these give you a clue by having fuel leaking or a residue around the little hole in the body of it. Sometimes the fuel goes into the crankcase also through the lever area that is driven by the camshaft. It is most times a bad fuel pump but if you have a cracked line sucking air or a clogged tank sock for example you can get the same symptom. Also, a fuel tank that does not vent correctly. The last possibility that I can think of is vapor lock which is basically your fuel boiling.

I worked on carbureted vehicles daily once upon a time. Kudos to you. Your description of what it does and when it does it is awesome. I am very very confident in what you need to chase and what you will find when you do. This is one of those moments where being old pays off. A fuel pressure test is your friend right now.
04-11-2021 06:57 AM
93YJ4FUN Did that fix the problem? Enquiring minds want to know lol
04-09-2021 09:40 PM
SevenSlotAddict I found the Weber, while a good swap, is the most finicky carb I ever dealt with. My last YJ had one and it constantly gave me issues. I finally sold the Jeep on but I was looking into replacing the Weber with something more user friendly. Once a Weber is tuned properly, they run great but require constant attention. That was my experience anyway.


Hope your work today solves your issuer. If it does, it only reinforces my views on Webers.
04-08-2021 04:46 PM
Bedlam_YJ Nothing quite like stalling out 5 times on the way home from work a little while ago. Accelerating in 1st and 2nd gear is fine, but as soon as its shifted into 3rd and throttle is given it bogs down and I can hear the spray in the carb, and then it dies. Sometimes I can pump the gas and keep it alive, but most times it ended up with me coasting on the side of the road while I turned the key to get it going again. Trying to shift past 3rd into 4th, or shifting from 3rd into 4th does the same thing. 4th to 5th too.


The last time it happened before getting home, I sat idling on the side of the road for a minute or so and then when it was clear, jumped back on the road and it gave me no more problems for the last 3 minutes of the drive.

Quote:
Originally Posted by 93YJ4FUN View Post
Timing advance vacuum hose?

Carb Float level?

Accelerator pump?

Here's a thread on something similar:

https://www.jeepforum.com/forum/f8/c...r-pump-907450/
Vacuum hoses should be fine, I sprayed them down with soap mixture and saw no bubbles. They don't look cracked or worn and don't feel brittle. The only vacuum lines left in the Jeep are only the ones required for it to run.

Anything carb related is kind of beyond me. The rebuild kits from Redline only come with the gaskets, some of the smaller screws/pins/jets and a few other bits. Nothing that had me adjust anything with the float, save for the brass plunger that rides on top of it. Even then, I'm positive I didn't bend the tab and accidentally adjust the float level while installing the new plunger, so float level is the same as before the problem started.
I don't recall if the kit came with a replacement accel. pump or not, as I don't remember installing a new one. It's most likely that it did not. Either that, or I am in serious need of glasses.

Quote:
Originally Posted by bruinjeeper View Post
Apologies.

That doesn't display when i look at JF on my phone.
No worries. I figured it was something like that, I just gave the extra info so it was there and no one tried to give the same answers. I'll preface subsequent topics with the pertinent information next time! My bad!


EDIT:
The rebuild kit did in fact come with a new acceleration pump. I missed it in the large bag because it was sandwiched in between the pages of the direction and parts list. Luckily the trash company didnt pick up our garbage today since I had to dig the box out to double check.
The new pump is on and I'm getting ready to attempt a run to get some food and gas. Hopefully, nothing explodes!
04-08-2021 04:16 PM
bruinjeeper
Quote:
Originally Posted by Bedlam_YJ View Post
It's an '87, there is no TPS. There are also no codes, as this is pre-OBDI and OBDII. There is no CEL on the dash light cluster, so I can't use the Renix-era trick with counting CEL flashes. My only options are the expensive Snap-On tool or getting my hands on the factory tool for diagnostics.
Apologies.

That doesn't display when i look at JF on my phone.
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