The engine is all stock the mechanic gapped the plugs and did all the vacuum lines we are going to hook up the high altitude adjuster I will change my oil to the 20 w 50 I know the mechanic is setting everything to factory specs but I did buy 3:73 gears because people said that would help because the engine wouldn't work so hard at higher speeds then the 4:56 gears in there now the guy who sold me the gears said I should change my distributor to hei when we get the gears in we will retest this time were making sure o2 sensor is working high alitude adjuster is hooked up and heavier oil and I will check the air filter again but I just changed after cleaning the motor and I'm going to check the sensor in the air cleaner
I don't think any upgrades have been made to engine it's all stock all vacuum lines were done by mechanic I will try the heavier oil and I am having the high altitude adjuster hooked up the plugs were gapped at recommended specs by mechanic the mechanic said mixing the e85 with my gas would make it burn cleaner were going to put in the new gears 3:73 getting rid of 4:56 gears and lockers so I can drive in winter and get some highway gears so I'm not at such a high rpm going 75 but I still want to go off roading too I don't know I just want to plate it and drive it finally
You can't register as historic here for classic plates it has to be 1975 or older now. You don't think you could pass with a carb here in Colorado. I'm having the o2 sensor checked and the nutter bypass done. As of today I have also did new spark plugs and points plus put in Moab and we cleaned the motor again with 109 engine cleaner we have e85 in it and we're doing the high altitude adjuster and I removed the full time locker in the rear end. I'm really running out of ideas here what else can it be that causes a engine to run to rich or stopping the fuel from burning all the way????
Couple of things E85 will definitely NOT work (or are you thinking of the 5-10% alcohol/gas mix commonly sold at stations).
Tire size etc won't change test results unless they do it on a dyno.. is that what they are doing there?
'89 Wrangler YJ
97 Grand Cherokee (ZJ)
87 MB 560SL roadster
On your high altitude jumper, it is located in different places on different year models. Check the Jeep service manual for your year.
Also, there is a Factory Service bulletin that details the additional adjustments and settings that must be mad when using the high altitude jumper. Colorado Jeep dealers should all have it. It isn't as simple as hooking it up and all problems are gone.
The service manual also has pages devoted to properly adjusting the internals of your carburetor.
418 miles on 19 gallons of gas. Can't beat the BBD !
What else do you have to do? I don't have a owners manual. I talked to a state emission guy today he said he never heard of it but did find it in the diagrams. He thinks its the o2 sensor or a problem with the carb.