Join Date: Nov 2007
Location: Off the Grid in Chester Grant
Your plumbing is pretty messed up from what I can see. This can cause your issues.
Let's start off with photo 1.
The two top vents must be open and put togeter in a T fitting like it was, you cannot have the float bowl vent blocked or it will bog. This line then goes to the charcoal canister on the 'carb' nipple or the one closest to the engine or farthest from the valve on the canister's top. The next line on the canister goes to the gas tank vent.
Then get rid of that spring on the choke and see below.
Next the gas filter is in upside down. The center line goes the the carb and the top line goes to the return line. Yours has the return lower which allows gas to siphon back to the tank when it sits.
Then below the spring, on the valve cover side of the carb is a vacuum nipple. This one goes to the distributor. The one you have marked to the distributor now gets capped, it used to run the stock air filter TAC system.
Now photo 2:
The line running to the canister on the bottom corner is right and should go through a CTO valve so the canister only turns on when the engine warms up.
Cap that distributor line nipple on the back corner and cap that open one up top.
The line to the PCV valve needs a T fitting. From this T fitting, the other line runs to the canister purge or the line right under the round valve thing that gets the little vacuum line.
OK I see the heat tube for the choke there so that is at least hooked up. The adjustment notch on the choke cover is int he wrong place, it should be two notches on the other side of 0. I think you need to open this black cover and make sure the choke linkage grabbed the spring inside. It is easy to get it wrong or have it fall off when putting the cover back on.
The choke is supposed to be closed after you give the gas pedal a shot of gas before starting the engine and as the engine warms up it opens. You need to remove the air filter and verify this is happening and get back to us.
Once you have the choke working, you warm up the engine and put the fast idle cam on the second from top step and set the screw so the rpm is 1700-1800 rpm. This sets up the choke's fast idle for start up.
To start this engine, you must pump the gas at least once, usually twice before turning the key. This primes the carb and sets the choke on. In real cold weather, more pumps are needed.
86/00 CJ7 Laredo, 33x9.5 BFG AT's, 'glass nose to tail in '00, 'New' frame,wires and plumbing in '09. Carter BBD Carbed 4.0 HO in '10.
89 YJ Renegade. BBD Carbed 4.0 HO. Locked front and rear with 33x9.5 BFG AT's
Some Canadian Bush Jeep Runs and Build Photos:
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