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Message
Engine issues on my CJ7 258 i6. Any Carb experts? NEW UPDATE Page 3
Posted on 6/21/17 at 2:02 pm
Posted on 6/21/17 at 2:02 pm
I have done some research on this but cant find any clarification with my certain problems.
The engine idles fine, revs up fine( not in gear) and will stay running at a higher RPM. But when i put it in gear and accelerate the engine dies after a few seconds. i can pop the clutch to get the engine running again if im still rolling or if i am stopped it will crack right back up. It only dies when it is put under load.
I have read i could be building up a vacuum in the fuel system and thats preventing fuel getting to the carb under load, so i checked the gas cap and sure enough i heard either air rushing in or out. So i left the cap off. But the same thing happened. I know this vintage had vented gas caps and this is a after market cap, but removing it would keep the pressure equal.
Any Ideas on what to trouble shoot? maybe a collapsed fuel line?
The engine idles fine, revs up fine( not in gear) and will stay running at a higher RPM. But when i put it in gear and accelerate the engine dies after a few seconds. i can pop the clutch to get the engine running again if im still rolling or if i am stopped it will crack right back up. It only dies when it is put under load.
I have read i could be building up a vacuum in the fuel system and thats preventing fuel getting to the carb under load, so i checked the gas cap and sure enough i heard either air rushing in or out. So i left the cap off. But the same thing happened. I know this vintage had vented gas caps and this is a after market cap, but removing it would keep the pressure equal.
Any Ideas on what to trouble shoot? maybe a collapsed fuel line?
This post was edited on 6/26/17 at 9:09 am
7
Posted on 6/21/17 at 2:03 pm to CarRamrod
Or you could losing vacuum with a leak in the system.
Posted on 6/21/17 at 2:04 pm to CarRamrod
Have a buddy with an XJ with a 6 that did the exact same thing. Think it ended up being the fuel pump.
Posted on 6/21/17 at 2:05 pm to CarRamrod
Could be as simple as a fuel filter.
You'd need to check fuel supply pressure to at least narrow down to either a vehicle problem or a carb problem.
You'd need to check fuel supply pressure to at least narrow down to either a vehicle problem or a carb problem.
Posted on 6/21/17 at 8:19 pm to CarRamrod
carb jet has some trash in it.It doesn't take much to clog them,just a small speck of rust can do it.
pretty easy to fix.
pretty easy to fix.
Posted on 6/21/17 at 10:41 pm to CarRamrod
I'd pour a can of SeaFoam in the tank and see if that helps. Worked for me. That SeaFoam is pure gold.
Posted on 6/22/17 at 12:12 pm to CarRamrod
I opted for the motorcraft swap. Night and day difference from the Carter. Ebay.
Posted on 6/22/17 at 2:37 pm to CarRamrod
What year? I have a 78 Wagoneer and had a similar problem. The rubber diaphragm in my fuel pump was not designed to handle ethanol, so every few years the pump was going out.If you are running ethanol, stop running it or run an electric fuel pump rated for ethanol.
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