1985 K100RS throttle bodies tuning

[jwetering]

Thanks guys - I got that all figured out.

[98lee]

Just one point of clarification please...

When I adjust the position of the TPS and listen for that click - is it with the engine on or off, ignition on or off?

And remind me again what the click means...is it the switch that shuts off the fuel when the throttle is closed and revs are above 2500 rpm?

Thanks

Do it with the engine off. You are listening for the click of a microswitch inside the throttle position switch. It is a VERY faint click.

Yes. The click means that the switch is telling the computer that you are coming off fully closed throttle. The switch does two things; tells the computer when the throttle is fully closed and there is another microswitch inside that tells the computer when you are near wide open throttle. The second one will be properly adjusted when the fully closed throttle switch is correct (no separate adjustment needed).

[jwetering]

Hi Lee - you may have noticed the thread I started called "injector service indicated". In that thread I tell the story of the mix adjustment I did using the lean drop method. Mixed results - but overall better than before.

Before I started the adjustment I checked that the TPS clicked where it was supposed to. I did but it sure looked like a dead easy adjustment to make if it didn't.

Thanks for the help here guys. I've been maintaining my cars for years using advice from the excellent forums available for my brand of choice - and now that I've become obsessed with motorcycles in general and the BMW in particular this site has become a very important part of my life. I say that because I'm the kind of guy that doesn't sleep well if/when my equipment isn't working exactly as it should, so quick access to good technical advice is actually important for my health.

I also don't like working with shop manuals. Sure they're great for tables of data like torque specs or fluid capacities, but I find the procedures are often not written that well, and the photographs are too dark and too tightly cropped. Of course you can't ask specific questions to clarify either.

Anyway - thanks to Al Gore for enabling the technology to allow forums like these to exist and thanks again to you all for taking the time to answer questions and post useful information.

[42906]

Hi Lee - you may have noticed the thread I started called "injector service indicated". In that thread I tell the story of the mix adjustment I did using the lean drop method. Mixed results - but overall better than before.

Before I started the adjustment I checked that the TPS clicked where it was supposed to. I did but it sure looked like a dead easy adjustment to make if it didn't.

Thanks for the help here guys. I've been maintaining my cars for years using advice from the excellent forums available for my brand of choice - and now that I've become obsessed with motorcycles in general and the BMW in particular this site has become a very important part of my life. I say that because I'm the kind of guy that doesn't sleep well if/when my equipment isn't working exactly as it should, so quick access to good technical advice is actually important for my health.

I also don't like working with shop manuals. Sure they're great for tables of data like torque specs or fluid capacities, but I find the procedures are often not written that well, and the photographs are too dark and too tightly cropped. Of course you can't ask specific questions to clarify either.

Anyway - thanks to Al Gore for enabling the technology to allow forums like these to exist and thanks again to you all for taking the time to answer questions and post useful information.

Actually, thank DARPA. Your defense tax dollar at work.

[walt3022]

"I've become obsessed with motorcycles in general and the BMW in particular this site has become a very important part of my life. I say that because I'm the kind of guy that doesn't sleep well if/when my equipment isn't working exactly as it should, so quick access to good technical advice is actually important for my health."

LOL! So there are more loonies like myself around here!

[42906]

"I've become obsessed with motorcycles in general and the BMW in particular this site has become a very important part of my life. I say that because I'm the kind of guy that doesn't sleep well if/when my equipment isn't working exactly as it should, so quick access to good technical advice is actually important for my health."

LOL! So there are more loonies like myself around here!

It's normal. Stuff like that will nag at me all night if I know something is AFU on my bike.