| Author |
Message |
robert munrow
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, October 29, 2004 - 12:22 pm: | |
Wondering if someone can help. I took my maiden voyage and went to wyoming and montana. what a test. I really had problems in high elevations, especially above 8000 feet. she really smoked bad. I think i need to get more air into her. also, if i could have kept the tranny in a lowere gear it would have been much better. everytime i got a substantial rpms built up, she would upshift making me loose everything i had gained. if i could hold her from shifting into drive i think it would solve both problems. has anyone else had these problems. I thought about force feeding air with a duct fan or something but no idea with tranny thanks for your help bob |
Richard Bowyer (Drivingmisslazy)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, October 29, 2004 - 1:28 pm: | |
Do you not have a gear shift for the tranny? I always pull mine down into third or second and it will not shift up. I can not keep it in first though. Even if I pull the shift lever down to first, it will shift up to second as soon as the rpms/speed reaches a certain point.
Richard |
Henry R. Bergman, Jr. (Henryofcj)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, October 29, 2004 - 5:14 pm: | |
Your mill MAY be fine. Do you have a turbo? Anyway, it seems to be a characteristic of the 2-stroke Detroit to smoke somewhat at higher elevations.
You are correct--usually the black smoke is caused by too little air, or too much fuel. A driving techinque that may help is to rev her up to around 2000 rpm...
....lock your tranny in a lower gear, then slowly take your foot out of the throttle until the black smoke clears up. It will not hurt your engine to do sosss.
Keeping the rpm up and reducing your foot should help. Although, it goes without saying your will go up the hills slower. Just take your time and enjoy. Good luck. |
Nick
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, October 29, 2004 - 9:23 pm: | |
We just came across Wyoming on I-80 a few weeks ago and had the same problem. I was afraid I had blown an injector or something. But I learned the ansawer was to gear down and tread lightly on the throttle. At one point I was down to about 15 mph going eastbound up a major pass just outside Laramie, but it was only a stretch of less than 1/2 mile. I just got over in the slow truck lane and let her climb at her own pace. |
robert munrow
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, October 30, 2004 - 9:44 am: | |
I appreciate all of your input and i agree if i could keepthe rpms up my problem would be solved. can anyone tell me how to accomplish this. yes ido have a shift lever and I can put it in any lower gear other than drive but it automatically shifts up to the next gear when the rpms get to high. I would like to lock it in to 3rd or maybe second and keep the rpms up alittle bit. thanks bob |
TWODOGS (Twodogs)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, October 30, 2004 - 10:28 am: | |
back off the throttle before it shifts |
Richard Bowyer (Drivingmisslazy)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, October 30, 2004 - 12:39 pm: | |
There is some way to do it, because mine would never shift from second or third until I moved the shift lever, regardless of rpm.
Richard |
TWODOGS (Twodogs)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, October 30, 2004 - 1:53 pm: | |
I know in G.M. transmissons...there is a screw on the modulator.............. |
Nick
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, October 30, 2004 - 10:27 pm: | |
My MCI will also upshift itself if I let it. I have just learned to kind of feather the throttle as the bus starts wanting to pick up speed. It is just something you have to learn by feel. Sort of "seat of the pants" flying (or busing in this case). |