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re: Engine issues on my CJ7 258 i6. Any Carb experts? NEW UPDATE Page 3
Posted on 6/23/17 at 8:29 pm to DownSouthJukin
Posted on 6/23/17 at 8:29 pm to DownSouthJukin
Convert to propane is the correct answer.....
0
Posted on 6/23/17 at 8:50 pm to CarRamrod
quote:
I have dumped a can of seafoam in the tank and im letting it run on high idle till it runs out. going to get 10 gallons of non ethanal and do it again. i took it for a spin down the street and didnt have an issue but i didnt go but a few hundred yards. after i get a good amount of seafoam ran through ill take it for a longer run to see how it does, before i shell out for a new carb.
The entire problem MIGHT be contaminated fuel. Just a little bit of H20 in the fuel will cause all kinds of problems. SeaFoam will take care of that, plus you MIGHT have picked up a tiny piece of crud in the jets, or the needle may have some buildup. SeaFoam will usually take care of those, too. Lots of possibilities. Did you check the plugs? Plugs under a load will sometimes perform differently than plugs at idle. Keep us posted. I love threads like this.
Posted on 6/24/17 at 7:02 am to CarRamrod
quote:
im known to take shite apart and cant get it back together.
That's why you have a camera on your phone. take twice as many pictures as you think you need
Posted on 6/24/17 at 2:04 pm to BFIV
I tore the jets out this morning and cleaned them and put them back. At it is running great. I put the air filter back on and it still ran but not as good. I need to replace the file and clean all that out. I drove around and was find but after a few miles it started dieing again when I took my toot off the gas. I'm guessing the idle jets got clogged again, from more crud. I'll do this a few times more to see if it will clean out.
Posted on 6/24/17 at 10:26 pm to CarRamrod
Have you changed out the fuel filter yet?
Posted on 6/25/17 at 12:03 pm to BFIV
Fuel filter definatley worth a check.
Don't forget about the screen inside the fuel tank. I got some shite gas in an old impala and it woukd run great until last quarter of a tank. The trash in the tank fouled the fuel pump screen. It was a pain in the arse to figure out. Only did so after pressurizing the fuel system back into the tank. Hooked fuel back and it ran great until trash blocked the screen.
Don't forget about the screen inside the fuel tank. I got some shite gas in an old impala and it woukd run great until last quarter of a tank. The trash in the tank fouled the fuel pump screen. It was a pain in the arse to figure out. Only did so after pressurizing the fuel system back into the tank. Hooked fuel back and it ran great until trash blocked the screen.
Posted on 6/25/17 at 12:59 pm to CarRamrod
I've seen water in fuel act that way in carb vehicles.
It will settle to the bottom of the tank when the vehicle is not moving. Then when driving mix into the gasoline when driving. Under a load the water will accumulate on the filter screen blocking the gasoline. After it sits for a while the water will settle out and down to the tank or in the lines.
You won't find any water in samples taken at the carb since the filter is blocking it. Maybe why the Seafoam seemed to help a little. May have to tank.
It will drive you crazy trying to figure out.
It will settle to the bottom of the tank when the vehicle is not moving. Then when driving mix into the gasoline when driving. Under a load the water will accumulate on the filter screen blocking the gasoline. After it sits for a while the water will settle out and down to the tank or in the lines.
You won't find any water in samples taken at the carb since the filter is blocking it. Maybe why the Seafoam seemed to help a little. May have to tank.
It will drive you crazy trying to figure out.
This post was edited on 6/25/17 at 1:03 pm
Posted on 6/25/17 at 1:06 pm to cajuncarguy
Yea I already put a new fuel filter on, and a few years ago I put a new tank in so I don't think it would be crud in the tank.
Posted on 6/25/17 at 1:39 pm to CarRamrod
Not crud. Water. With all the rain and moisture in the air, the ethanol in the gas absorbs water readily. You can have a brand new tank and a new filter and still have the same effect. The water will not stay on the filter screen but settle back to the lines/tank when the engine is off.
I've fixed several of these back in the day working with dealers and OEM guys.
As I said it's hard to figure out. Dropping the tank is cheaper than hanging a bunch of parts on it.
I've fixed several of these back in the day working with dealers and OEM guys.
As I said it's hard to figure out. Dropping the tank is cheaper than hanging a bunch of parts on it.
This post was edited on 6/25/17 at 1:41 pm
Posted on 6/25/17 at 9:06 pm to thejudge
quote:
I got some shite gas in an old impala and it woukd run great until last quarter of a tank
Had the same problem in a 87 Nova. I put dual in line filters on it, Seafoamed the dickens out of it, and wouldn't put anything in it but 100% gasoline. I still never let it get below 1/4 tank before filling up. It ran great as long as I didn't let it get below 1/4 tank.
Posted on 6/26/17 at 7:46 am to cajuncarguy
Also, ethanol fuel starts phase separation in as little as two weeks. So, if you buy gas that's been sitting in a gas station tank for 1 week and you fill up your CJ and don't burn the entire tank within the month = water in your gas.
I only use 100% gas (93 octane) and I mix in Marine Stabil. It's expensive, but it has made a difference in all my carbureted engines.
I only use 100% gas (93 octane) and I mix in Marine Stabil. It's expensive, but it has made a difference in all my carbureted engines.
Posted on 6/26/17 at 9:09 am to slacker130
i completely ran the tank dry, and am only filling up with nonethonal fuel from now on.
UPDATE
I have decided to go ahead and invest in a new carb. i am seeing about 50/50 pf jeep people running either Weber 32/36 and Motorcraft 2100/2150.
I think have decided to get a 2100 from the ebay guy, i have bee reading way more good reviews than bad from him. does anyone have anything that wold push me away from this.
UPDATE
I have decided to go ahead and invest in a new carb. i am seeing about 50/50 pf jeep people running either Weber 32/36 and Motorcraft 2100/2150.
I think have decided to get a 2100 from the ebay guy, i have bee reading way more good reviews than bad from him. does anyone have anything that wold push me away from this.
This post was edited on 6/26/17 at 9:10 am
Posted on 6/26/17 at 9:39 am to CarRamrod
quote:
I think have decided to get a 2100 from the ebay guy, i have bee reading way more good reviews than bad from him. does anyone have anything that wold push me away from this
My CJ and a friend's both ran like new jeeps after the motorcraft swap. We both purchased from the ebay guy. YMMV. Good luck.
Posted on 6/26/17 at 1:36 pm to slacker130
I ordered the 2150 based on his recommendation. ill update after i install.
Posted on 6/26/17 at 9:04 pm to CarRamrod
I have an 81 with a 304, same issues. Went with the new carb, 100% nonethanol fuel for now one. Good to go
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