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carb question

carb question

Jeff Kavanagh

Jeeper
Posts
71
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Location
Owen Sound, Ont., Canada
Vehicle(s)
85' CJ7, straight 6, D300, All I know so far about he transmission is that it is a 5 speed manual. Still trying to learn what everything else is. lol
Hello

Okay so the engine is turning over nicely now with the new starter (no plugs in) although I find out now that I am also going to have to replace the solenoid as well as the starter. I had to jump it with a screwdriver for it to work.
So now I have cleaned off the plugs and put them back in. Yes I numbered the lines from the distributor. :D
And I put a small splash of gas in the carb and turned it over. It really sounded like it wanted to fire but no go.
I took a flashlight and looked into the bottom of the carb and noticed how dirty (rusty) it seemed so I am thinking that could be a good reason why it didn't fire up?
Would my next move be to remove the carb and try and get it cleaned out. Yes I am going to be taking pictures of everything as I go just to make sure I don't forget anything.

So my main question is, does this sound like a logical next step to try to get this engine fired up for the first time in several years?

I also took the gas line off and ran it to a gerry can for clean gas. I need to replace the gas tank on this Jeep too.

My next question is, there are some metal tubes coming out of the carb in different positions. I have enclosed some photos. Is there some lines missing which go somewhere on it?

Thanks again for taking the time to help out like this.

carb4.webp

carb3.webp

carb1.webp
 
The 2 big tubes on top of the carb are vent tubes for the float bowl, they go to the charcoal canister. it would be a good thing to rebuild the carb to get rid of the dried up gaskets and fuel in it, I would also bring the motor up to top dead center on #1 cylinder and check rotor position to cap and wire and timing marks on vibration dampener to make sure it all line up. Correctly so you can proceed with trouble shooting. You could have weak/no spark or timing off. It should have fired right up splashing gas in carb.


Sent from my iPhone using Tapatalk
 
The 2 big tubes on top of the carb are vent tubes for the float bowl, they go to the charcoal canister. it would be a good thing to rebuild the carb to get rid of the dried up gaskets and fuel in it, I would also bring the motor up to top dead center on #1 cylinder and check rotor position to cap and wire and timing marks on vibration dampener to make sure it all line up. Correctly so you can proceed with trouble shooting. You could have weak/no spark or timing off. It should have fired right up splashing gas in carb.


Sent from my iPhone using Tapatalk

I looked up what the charcoal canister is. Yes the two tubes coming from it are cut. Am I correct in assuming that it will likely not be a bad idea to replace it once things are running in the future with a new one seeing that it is 30+ years old?

The spark plugs don't look in very good shape even though I tried to clean them up before putting them back in. Maybe I should start off with a new set as my first step?

The carb is really dirty on the inside. I just looked up a video on rebuilding it. I guess I have nothing to lose trying right?

As far as "bring the motor up to top dead center on #1 cylinder and check rotor position to cap and wire and timing marks on vibration dampener to make sure it all line up." I'm gonna have to do much more research before I get into that. :D:D

Feeling a bit over whelmed :eek:

Thanks again for your help.
Jeff
 
I hope you are getting the real FSM, MR-252.
The Haynes and such are OK. But do not go into the detail the true FSM does.
LG
 

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