Engine Engine Stalls on Rocky Inclines
mjclimber
Jeeper
Hello,
I just joined this forum and I'm looking forward to sharing and learning from you all. I acquired a '75 CJ5 with a AMC 258 i6 / 4.2l , 3 speed manual about 18 months ago. It has 105K miles and runs good for a 50-year-old original jeep. However, if I try to climb a fairly rocky 4WD trail, it will flood out as soon as the jeep hits a moderate pitch angle. I believe this is a problem with carbureted engines, but I suspect it should handle a 4WD trail a little better.
It has a AMC 258 i6 / 4.2l with a Weber 1 barrel, and I fuel is spilling over the bowl in a pitch situation. In addition, it seems the AMC 258 i6 / 4.2l is a little low on power (although it's improved after adjusting the ignition timing).
I've read some threads on this problem where people recommend a MC 2100 carb, which is a 2 bbl, and I have a 1bbl manifold. So, my dilemma is whether to change the intake to a 2bbl and go with the MC 2100 or to try a 2bbl to 1bbl adaptor plate.
It appears the exhaust manifold is bolted to the intake manifold and I'm having trouble finding an intake manifold that will fit, without changing the exhaust manifold.
Does anyone know what the original stock carburetor was? I think my current Weber was added at some point.
Just looking for any similar experiences or recommendations from the group.
Thanks very much!
MJ
I just joined this forum and I'm looking forward to sharing and learning from you all. I acquired a '75 CJ5 with a AMC 258 i6 / 4.2l , 3 speed manual about 18 months ago. It has 105K miles and runs good for a 50-year-old original jeep. However, if I try to climb a fairly rocky 4WD trail, it will flood out as soon as the jeep hits a moderate pitch angle. I believe this is a problem with carbureted engines, but I suspect it should handle a 4WD trail a little better.
It has a AMC 258 i6 / 4.2l with a Weber 1 barrel, and I fuel is spilling over the bowl in a pitch situation. In addition, it seems the AMC 258 i6 / 4.2l is a little low on power (although it's improved after adjusting the ignition timing).
I've read some threads on this problem where people recommend a MC 2100 carb, which is a 2 bbl, and I have a 1bbl manifold. So, my dilemma is whether to change the intake to a 2bbl and go with the MC 2100 or to try a 2bbl to 1bbl adaptor plate.
It appears the exhaust manifold is bolted to the intake manifold and I'm having trouble finding an intake manifold that will fit, without changing the exhaust manifold.
Does anyone know what the original stock carburetor was? I think my current Weber was added at some point.
Just looking for any similar experiences or recommendations from the group.
Thanks very much!
MJ