K11 Owners Group

Flying Duck · Posted: Tue Aug 26, 2008 9:01 pm Post subject: K75 "idling" at 2500+

Got my RED parts back from the painter for my project K75 recently
and decided to finish it up. Seems to be running rich as when I give
it throttle it stumbles.

It's now "idling" in the 2500+ range - even with slack in both the
throttle and "choke" cables.

Stuff I've done so far:

Swapped L-Jetronics - no change

Swapped ICUs - no change

Swapped in three other FI's - no change

Pulled the FI leads one at a time - same reaction on all three so I
don't think it's a stuck valve unless all three cylinders had them
miraculously stick all at once.

Replaced old crank case breather hose - needed one anyway.

Sparayed some starter fluid around the TB rubbers ot see if that
would give it more rev - no change.

Pulled the FPR vacuum hose off of #3 cylinder - there was a LITTLE
change but not much.

I make no claims of expertise in such matters beyond that of a shade
tree mechanic.

It's a 93 engine with 24k that has been running fine to date.

My next GUESS is the FPR has gone bad and is overpressurizing.
Before I "go in" and swap in another FPR, just wanted to see if that
is my next likely suspect.

Any other diagnostic suggestions?
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93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE

Roy S. · Posted: Tue Aug 26, 2008 9:07 pm Post subject:

This site does not see that much activity, but perhaps they may have have an answer... http://k100rt.aforumfree.com/index.htm
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1993 K1100LT/On going project
1990 K75rt
1991 K75s
LURKER at LARGE

Moondog · Posted: Tue Aug 26, 2008 9:34 pm Post subject:

Does the K75 have a TPS? Some of the K-bikes have to set up the throttle if the battery is disconnected or the Motronic. After connectin said equipment and turn the ignition on then turn the throttle from idle to to full slowly to "teach" the Motronic
_________________
"Badges? We don't need no stinking badges"!

I like the social aspect of riding. Rally's, socializing, drinking beer, fartin' and carrying on. Smile

2004 R1150RS
1996 K1100RS (moved on to new home)

duckbubbles · Posted: Wed Aug 27, 2008 9:27 pm Post subject:

Have you looked at the linkage on the aft end of the throttles that the choke cable lifts? Maybe it is stuck in the "up" position.

Frank
_________________
85 K100/1100RS, 321,000 miles, 25 years
96 Ducati 900SS/SP, sold it
05 R1200ST, 35,000 miles, 5 years
400,000 BMW miles