First time this happened to me. 1943 Willys MB with a Carter W0 carb. I have owned it for a few years, it sits most of the time. We get it out maybe once a month. I have been running regular fuel with ethanol in it. It normally runs great.
Out for a drive last night, probably drove it for 20 minutes, no issues. Stopped at a car cruise for about an hour. Went to leave. Started right up, about a mile down the road, it started bucking and surging like it was out of gas. Downshifting it seemed to help keeping the revs up. It would clear up and then come right back. I nursed it to the firehouse that I belong to and started rooting around. No way I could get it to start. Carb was dry inside, so we took it apart and found the bowl had some yellow slime in the bottom. We cleaned what we could and it started right up. Drove it home, about 3 miles and it was pretty rough but seemed to clean itself up as I got closer to home.
My thought is the ethanol fuel is to blame. I was going to drain it and replace it with non ethanol fuel. After looking here, it almost sounds like maybe vapor lock. It was hot, upper 80s and very humid. Engine was running a little over 190 on the temp gauge.
Last Edit: Jul 30, 2019 15:03:09 GMT -5 by alphado
Post by Scoutpilot on Jul 30, 2019 14:25:20 GMT -5
After about ten days of sitting, Ethanol fuel will attract and condense moisture which settles to the bottom of the tank. Enough condensate can build so that you get a slug of water in the line. No further explanation required there. Before your wise decision to switch the straight gasoline I had only one suggestion. Drive more. Or at least start and run it at a moderate idle a few times a week.
Thanks! I have a few events this summer, but my plan is to send you the carb in the fall to have a peek at. It could use a once over. I noticed the float pin was worn pretty bad, so other things are probably worn too.
Siphoned the old fuel out, drained the fuel pump bowl. Still running pretty rough with the new fuel. Trying to drive it a bit to see if it clears up.
Do yourself a favor and remove the tank from the Jeep and thoroughly clean it, throw in a handful of 1/4” nuts and shake them around to loosen all the crap in the bottom of the tank. Eliminate all possibilities of contamination!.
muley: raining like a sob here on the snake river plain..
Sept 19, 2021 11:38:14 GMT -5
oilleaker1: Lee had a HBR for his birthday! It was good too!
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Sept 19, 2021 18:23:10 GMT -5
Scoutpilot: Just a few more things to do for the Asheville show, when I finish my coffee.
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muley: yesterdays big rain cleared the smoke. can see clear on up into the sawtooth this morning. nice to be able to breathe..
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Lee: Lee had 2 HBR’s on his BD, and enjoyed them 👍🏽😉
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oilleaker1: 53 and scattered showers. Any rain helps. Sure is dry. May have to have a HBR to feel seasonal.
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Lee: Rained here this afternoon, heavy at times but needed.
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muley: Annie worked me like a rented mule today pulling 1/4 mile of down (half buried) barb wire and T posts on the north boundary we have wanted it gone for 20yrs. Natcherly she ran the loader and I chained the posts..
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muley: Bonus we recovered about 50 posts, half of which are suitable for reuse..
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