Just got this 85 K100 rt. It is well below 1k rpm at idle with “choke “ not on...I keep the “choke” always turned up to avoid stalling at red lights....so after being to running temp it was ok but still below 1k rpms....I’m sure I probably need to adjust the throttle but am new to bmw so I just started learning about the bike....ran fuel injector cleaner over like 400 miles and it ran better at high rpm’s...smoother but tonight I noticed after a long ride it was really struggling at idle without “choke” open.....even some chugging instead of a smooth idle .....just got it a week ago and am startling maintenance over the course of a few weeks.....should I just increase the throttle so at idle it’s around 1k rpms? I know getting to the root of the issue is better but I’m thinking the throttle needs adjusted to raise the rpms at idle and I haven’t seen a lot of info on doing that...maybe I didn’t search good enough....can someone link me to adjusting my throttle to raise the rpms at idle ..sick  of riding with the “choke “ on...though it’s not a choke ...lol...you get my point...thank you

Oh to note I did find how to raise the idle speed in the manual...saying there’s a idle adjuster screw behind #2 throttle body.....I’m gotta learn where everything is on this engine....lol.i need gigantic map of where everything is!! i like reading how to do things but explanations from other owners is much easier...thanx again
Assuming that’s the screw (c)I adjust it with ...sorry, .I know this is easy stuff but again I’m new to bmw and most of my older bikes I worked on a lot didn’t have fuel injection...never messed with it on my newer sport bikes ...

WILL ADJUSTING THE IDLE SPEED RESULT IN A PROBLEM THE TPS? READ SOMETHING IN FORUMS THAT IT WILL.....THANX....AGAIN!!!

Ok, to note it was last replaced 8k miles ago according to the past owners records....so you think fuel filter THEN idle adjust if that don’t fix it?

duck wrote:

First thing to do - fuel filter - NAPA 3032

You can find maintenance notes here:

http://bit.ly/new2kbikes

Thanx by the way....one more question....I seen all kinds of replacement filters ranging from 9$ to 18$.....if I order from the Internet I’ll pay extra for a better filter but does it matter really? You think my local NAPA filter isn’t much different ? I’d prefer just going there and buying it then ordering on internet ...thanx
Oh is the Napa gold FIL 3032 the correct one? I noticed it comes with hoses also ....the website says it don’t fit my bike, but I’m sure that’s probably not true ...

duck wrote:

First thing to do - fuel filter - NAPA 3032

You can find maintenance notes here:

http://bit.ly/new2kbikes

Take my advice or not.  I don't care.

Ethanol gas tends to absorb water. When that water "enriched" fuel sits in a fuel filter for an extended period of time then the water gets absorbed into the fuel filter fibers which causes them to expand and restrict flow.

I own ten K bikes. All of them run just fine with NAPA 3032s as long as I keep them fresh.

Your fuel injectors don't care how much you paid for the fuel filter or what brand it is. They just want gas.

Just throw away everything else that comes in the box with the 3032. It doesn't apply to K bikes.

Heresy23 wrote:Ok, to note it was last replaced 8k miles ago according to the past owners records....so you think fuel filter THEN idle adjust if that don’t fix it?

duck wrote:

First thing to do - fuel filter - NAPA 3032

You can find maintenance notes here:

http://bit.ly/new2kbikes

Yes.  Make sure the fuel injectors are getting an adequate supply of fuel before you mess with anything else.

When you pull the old the fuel filter out try blowing through it in the direction of the arrow and then compare that to blowing through a new one. Chances are you will notice a significant difference.

Thanks again for the direction....gonna go to Napa now and get the part and start with that to see if I can fix this...I wish my bike was like my girl,the more expensive the part I get her the happier she is....

duck wrote:

Heresy23 wrote:Ok, to note it was last replaced 8k miles ago according to the past owners records....so you think fuel filter THEN idle adjust if that don’t fix it?

duck wrote:

First thing to do - fuel filter - NAPA 3032

You can find maintenance notes here:

http://bit.ly/new2kbikes

Yes.  Make sure the fuel injectors are getting an adequate supply of fuel before you mess with anything else.

When you pull the old the fuel filter out try blowing through it in the direction of the arrow and then compare that to blowing through a new one. Chances are you will notice a significant difference.

Heresy23 wrote:I wish my bike was like my girl,the more expensive the part I get her the happier she is....

But cheap booze gets them just as drunk as the expensive stuff.

These bikes are like women in that they like to be fussed over before you ride them.  The more you look after them the better the ride.  

Unlike women, you don't need to buy them the expensive stuff.  As long as it's good quality, they'll be happy.  I would guess that thousands of K bikes are running happily with NAPA Gold 3032 filters and a lot of other equivalent parts.  Heck, both of my Bricks have $11 Chinese rear master cylinders.

Ha ha ....sucks Napa was closed on sundays or I’d be one of them!...being my first bmw my perception was more of them being fussy and only wanting the “big diamonds “...meanwhile she’s the dirty milf next door who still looks 25 at 50 but smokes 2 packs of marlboros and a six pack of beer every day and never says “I’m to tired” ....I’m amazed at these bikes , I’ve had mine maybe 2 weeks and I’m amazed by the “complex simplicity “ of these things ....man , leave it to the Germans....working on the bike I have so many “wow, what a great idea” moments when I see certain things......I don’t know if I’ll ever be able to afford a brand new bmw of any kind , but I’m much happier with this older ,reliable ,beautiful machine .....

Point-Seven-five wrote:These bikes are like women in that they like to be fussed over before you ride them.  The more you look after them the better the ride.  

Unlike women, you don't need to buy them the expensive stuff.  As long as it's good quality, they'll be happy.  I would guess that thousands of K bikes are running happily with NAPA Gold 3032 filters and a lot of other equivalent parts.  Heck, both of my Bricks have $11 Chinese rear master cylinders.

Drum roll please..........thanx duck, changed the filter with the Napa one and it’s alive again!!....and yes , I could barely blow thru the old one....I also got rid of too much free play on my throttle, changed all the gear and final drive oil, cleaned air filter.....etc......and she’s running goood...about to go for a long ride(it’s gonna rain of course ) and run out the gas I had ....so I noticed that black pain was pealing a lot inside my gas cap and I’m sure was getting in the tank.....I got rid of as much of it that would flake off.....

Heresy23 wrote:Ha ha ....sucks Napa was closed on sundays or I’d be one of them!...being my first bmw my perception was more of them being fussy and only wanting the “big diamonds “...meanwhile she’s the dirty milf next door who still looks 25 at 50 but smokes 2 packs of marlboros and a six pack of beer every day and never says “I’m to tired” ....I’m amazed at these bikes , I’ve had mine maybe 2 weeks and I’m amazed by the “complex simplicity “ of these things ....man , leave it to the Germans....working on the bike I have so many “wow, what a great idea” moments when I see certain things......I don’t know if I’ll ever be able to afford a brand new bmw of any kind , but I’m much happier with this older ,reliable ,beautiful machine .....

Point-Seven-five wrote:These bikes are like women in that they like to be fussed over before you ride them.  The more you look after them the better the ride.  

Unlike women, you don't need to buy them the expensive stuff.  As long as it's good quality, they'll be happy.  I would guess that thousands of K bikes are running happily with NAPA Gold 3032 filters and a lot of other equivalent parts.  Heck, both of my Bricks have $11 Chinese rear master cylinders.