help with motorcraft 2100
hopefulcj
Jeeper
- Posts
- 90
- Thanks
- 0
- Location
- north florida
- Vehicle(s)
- 1980 CJ7-258 I6, MC 2100 carb, team rush upgrade, T4, D300 tcase, D30 w/aussie locker in the front, AMC20 open, I think PO put 4.88s in the diffs, 35,000-135,000 miles, you pick. 4"susp lift, 2" shackle, 35" <-BAD WORD-> cepek AT's on black steel wheels, 1 1/4" spydertrak wheel spacers, most everything else i believe is stock, finding things out as I go
Im so frustrated right now, I bought the carb/distributor package from the guy on ebay. At first everything looked great, he said it should just be plug and play, its been the opposite of that. I have double and tripple checked just about everything on the carb, however I am new to carbs. After the install and checking all the bolts I started it up and sprayed some carb cleaner around the carb and the hoses that I plugged, no change in idle. Its a 1980 CJ so I did not have to do the nutter bypass. I got it running, and it ran fine, I adjusted the timing to 8* and tuned the carb with a vacuum gauge, I got about 16 psi on each side. I took it for a spin and it ran great, smooth as a baby's bottom. Then the idle went down at a stop light, I had to pump the gas to keep it running. So I went home and checked the timimng, and carb, I had to adjust the idle on the carb, and in turn re-adjusted the timing ( yes I did unplug and plug the vacuum advance to the carb) at around 750 RPM. (this amazed me because with the carter, I could never get it down to 750 without bouncing all over the place) Anyway, I checked and cross-checked all the timings and tunings and RPMS, all were good. I took it out today and everytime I acclerated it wanted to die on me, I had acclerate very slowly to get any movement, I got a backfire or two out of the intake. I took it home and took off the intake and noticed that the butterfly is all the way open, even with the engine off. This is wrong right? I can push on the butterfly to close it and it springs back open. Is this incorrect? It should be closed when the engine is off right? I remember reading about how you have to switch the choke spring on some carbs, is this the culprit? When I got hoem and loooked at the carb their was no tension on the butterfly so I assumed that something was messed up, I took the choke off, reinserted the butterfly arm into the choke spring and also turned the choke so the butterfly would close. My dad just told me that I should not mess with the choke when the engine is hot, this makes sense now. Where should I begin? Its sitting in the garage cooling off now. I thought I had it, and now its all messed up, Im close to calling the mechanic, but I need to conquer this on my own, for man reasons.
Thanks for any help, sorry for the long post, just confused right now, kinda new to carbs.
Thanks for any help, sorry for the long post, just confused right now, kinda new to carbs.