tuning
tuning
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elwood blues
Always Off-Roading Jeeper
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- 1978 CJ7 4.2L Comp Cam & valve train, MC2100 carb, MSD ignition, Dana 30 front, T18 trans, Dana 20 txfr, AMC 20 rear.
What year is it? What size engine is it? Details man, details...
CJ
Admin
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'82 CJ8, 258, D300, AMC20, D30
What carb? 
kicknjeep
Old Time Jeeper
what engine size, carb? We can help..
northfaceboy22
Jeeper
Well I have a AMC 258 i6 / 4.2l straight-six with a double barrel carb and I was gonna try and tune mine up... what do I need to do?
elwood blues
Always Off-Roading Jeeper
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Depends, what kind of two barrel is it? Factory Carter;
A swapped in Weber;
A swapped in Motorcraft 2150;
Or even possiblely a Holley two barrel;
Because all of them are tuned differently.
A swapped in Weber;
A swapped in Motorcraft 2150;
Or even possiblely a Holley two barrel;
Because all of them are tuned differently.
BajaEdition
Resident 'Old' Jeep Shaman
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- 67 cj5,225 Dauntless, D30,chrome molies, detroit, D44, full floating detroit, custom steering, disc all the way around,2 inch lift on 31s, armored up
70 cj6 4 inch lift
first you will need a vacuum gage
northfaceboy22
Jeeper
This is my carb:
A swapped in Weber;
A swapped in Weber;
elwood blues
Always Off-Roading Jeeper
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- 1978 CJ7 4.2L Comp Cam & valve train, MC2100 carb, MSD ignition, Dana 30 front, T18 trans, Dana 20 txfr, AMC 20 rear.
Here's a really good write-up
Weber CARBURETOR SET UP AND LEAN BEST IDLE ADJUSTMENT
Haynes actually makes a Weber Carburetor Manual
The Haynes Weber Carburetor Manual : A. K. (EDT)/ Peers Legg : ISBN 9781563921575 - Buy.com
Probably worth the $20 to pick one up and keep it in the garage, and they're probably stocked at you local NAPA or maybe even a local bookstore.
Weber CARBURETOR SET UP AND LEAN BEST IDLE ADJUSTMENT
Haynes actually makes a Weber Carburetor Manual
The Haynes Weber Carburetor Manual : A. K. (EDT)/ Peers Legg : ISBN 9781563921575 - Buy.com
Probably worth the $20 to pick one up and keep it in the garage, and they're probably stocked at you local NAPA or maybe even a local bookstore.
northfaceboy22
Jeeper
Here it is the carb...
northfaceboy22
Jeeper
Elwood, Today I started my jeep just fine and then I drove it for about 30 min. Then I shut it off at a friends house. When I went to start it back up it was having trouble starting and then it smelled flooded. I removed the air filter off of my Weber Carb. I then had a friend try and start it while I manually opened the choke this allowed more air to enter and then the jeep started no problem.
I am wondering if there is a way to adjust the choke on this carb?
I am wondering if there is a way to adjust the choke on this carb?
elwood blues
Always Off-Roading Jeeper
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First thing you need to find the choke. It should have two electrical tabs on it. One for hot (+12V) and one for return (ground). Make sure that these two have the correct wires connected to them, and make sure you're getting +12V, and have a good ground.
There is a retaining ring around the choke, it's kind of triangle shaped, but it's not. There should be three screws in the retaining ring. Loosen the retaining ring and rotate the choke assembly counterclockwise. Left is lean, right is rich. If this still doesn't help, there's a chance that the spring inside the choke has gone bad and you'll have to replace it.
I am by no means a Weber carb expert, I'm just going off general carb experience. If anyone else has more experience with Weber carbs....