nevada72
Vintage User
For posterity if nothing else -
I've been resurrecting an 83 R100RT that "ran when parked". I wasn't looking, it just fell into my lap. In my process of getting the old gal going I've posted up a number of questions here, and the membership has been beyond helpful. The bike went from non runner, to hard starter/poor runner, to good starter/not so great runner. to so-so runner with some significant decel pop.
That's what this thread is about. I got the bike to the point that it reliably started and was ridable. But it ran unusually hot, and there was some pretty annoying decel pop. Knowing something about bikes I hoped it was air being introduced into the exhaust somewhere. I further hoped that the 80s era EPA garbage was the culprit. So I forged ahead with the EPA kit from Bob"s BMW. There are plenty of examples on how to remove this troublesome plumbing so I won't go into that. What I will say id that removing it made far more difference than I ever imagined. It not only reduced the decel pop - it eliminated it. It also alleviated the hot running condition. I can honestly say removing the EPA stuff transformed the bike.
Proviso - the hardware holding the plumbing to the head was finger tight. I suspect it was a huge air leak. Also, the vacuum hose between the carbs and the T at the air box was improperly removed, allowing unfiltered air into the box, which I remedied.
Anyway, I am happy to say the bike runs out pretty darn well now. A carb balance will probably cure the last remaining issue - it's a little sluggish off of a stop.
Again - thanks to all that helped!
I've been resurrecting an 83 R100RT that "ran when parked". I wasn't looking, it just fell into my lap. In my process of getting the old gal going I've posted up a number of questions here, and the membership has been beyond helpful. The bike went from non runner, to hard starter/poor runner, to good starter/not so great runner. to so-so runner with some significant decel pop.
That's what this thread is about. I got the bike to the point that it reliably started and was ridable. But it ran unusually hot, and there was some pretty annoying decel pop. Knowing something about bikes I hoped it was air being introduced into the exhaust somewhere. I further hoped that the 80s era EPA garbage was the culprit. So I forged ahead with the EPA kit from Bob"s BMW. There are plenty of examples on how to remove this troublesome plumbing so I won't go into that. What I will say id that removing it made far more difference than I ever imagined. It not only reduced the decel pop - it eliminated it. It also alleviated the hot running condition. I can honestly say removing the EPA stuff transformed the bike.
Proviso - the hardware holding the plumbing to the head was finger tight. I suspect it was a huge air leak. Also, the vacuum hose between the carbs and the T at the air box was improperly removed, allowing unfiltered air into the box, which I remedied.
Anyway, I am happy to say the bike runs out pretty darn well now. A carb balance will probably cure the last remaining issue - it's a little sluggish off of a stop.
Again - thanks to all that helped!