K11 Owners Group

Jim · Posted: Sun Jan 16, 2011 6:33 pm Post subject:

From the symptoms you describe, it's more likely the HES. It would be much easier to check the HES than to rig up temporary power to the pump.
_________________
Jim
1997 K1100LTSE 94,000 - still has gremlins!
1995 R100RT Classic 16,650 crashed - repaired!
1992 K75RTP 46,000

"We shall not all die, but we shall all be changed."

Che sera sera · Posted: Mon Jan 17, 2011 4:31 pm Post subject:

Thanks for the continued support - I need it after today. First 10 miles - fine, then stopping every 200yds in traffic, or mile or so on open road. Starts up again after a 5 min cool down.

Have ordered a s/h HES (£49). Checked fault codes. Immediately I got upper HES sensor no signal. Great! On the right track. But when I checked again after another 10 mins or so (without clearing the fault) I got water temp sensor out of range. Bizarre. Would the water temp sensor give the symptoms I've experienced? Where on the bike is the temp sensor?

Thanks again
_________________
'96 K1100rs
'93 r1100rs (probably on the way out)

Flying Duck · Posted: Mon Jan 17, 2011 5:37 pm Post subject:

There are two temp sensors. The one that feeds the Motoronic is on a pipe at the front of the cylinder head where water returns to the cooling system. You need to take the radiator off to access it.

The other temp sensor is on the bottom of the water/oil pump and only feeds the temp gauge.
_________________
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

Che sera sera · Posted: Fri Jan 21, 2011 12:39 pm Post subject:

OK fitted a new (second hand) HES and ...... still exactly the same. Cutting out after 10 miles or so from cold. Then rough running or cutting out continuously. Will now try to by pass the tank connection to see if that helps. If that fails, I'm completely out of ideas?
_________________
'96 K1100rs
'93 r1100rs (probably on the way out)

Che sera sera · Posted: Fri Jan 21, 2011 2:24 pm Post subject:

and having just tried, my home-made elec connection to the pump gives the same results.
_________________
'96 K1100rs
'93 r1100rs (probably on the way out)

Flying Duck · Posted: Fri Jan 21, 2011 2:35 pm Post subject:

Not sure if this is your issue but I was riding home one day and BLAM, bike just quit running in the middle of a left turn. Coasted into a parking lot and tthe first thing I looked at was the connector for the sidestand switch - which I have shorted. One of the wires had come loose from the back of the connector. Cut the connector off and taped the wires together to get home for a more permanent repair.

Worth looking at if you haven't.
_________________
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

Che sera sera · Posted: Sun Jan 23, 2011 12:15 pm Post subject:

SORTED! And the answer was......water in the fuel.

Had the brainwave last night, so this morning drained tank and dried with cloth, changed fuel filter, fresh fuel with some drying agent and just had 70 miles of hiccup/cut-out free riding.

I guess over night the water would settle out, but after 10 miles or so it would be fully mixed in with the fuel to the point that the engine just couldn't ingest any more.

When I think of the hours spent trying to trace this (including rad out, removing coolant sensor to test etc), and a polythene bag taped over the filler cap would have done it!
_________________
'96 K1100rs
'93 r1100rs (probably on the way out)

merlin geikie · Posted: Sun Jan 23, 2011 7:02 pm Post subject:

Nice work Wink

Been following the saga closely,

At least you know a dang sight more about the venerable K now Very Happy

The filter would have been marginal as well coz it hates water and would have been under a lot of strain.

Good on you for sticking it through and from me, many thanks to K11OG list Folk for the opportunity to gain knowledge of the bike and how to fix the inevitable probs Cool

All the best now

merlin geikie · Posted: Mon Jan 24, 2011 7:08 am Post subject:

Che sera sera writes;

Che sera sera · Posted: Mon Jan 24, 2011 8:17 am Post subject:

Re poly bag, since I figure that the only way water can get in is through the filler cap, the poly bag would stop any rain ingress. (This is, assuming the fuel wasn't contaminated in the first place, which I doubt since our car gets its supplies at the same outlet and is (touch wood) fine.

Thanks all for your help and encouragement.
_________________
'96 K1100rs
'93 r1100rs (probably on the way out)

Scott_Anderson · Posted: Mon Jan 24, 2011 8:54 am Post subject:

hfxrzw · Mad Brick Rider Joined: 30 Jan 2009 Posts: 78

Have a look if the drain channel next to the cap is free.
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Cheers, Rene

Greetings from Florida.

BMW K100 '85

Jim · Posted: Mon Jan 24, 2011 7:40 pm Post subject:

Make sure the entire rain drain system is in good order. If the bike does not have an air accumulator, and the hose is kinked under the tank, you'll have rain water going in the tank.
_________________
Jim
1997 K1100LTSE 94,000 - still has gremlins!
1995 R100RT Classic 16,650 crashed - repaired!
1992 K75RTP 46,000

"We shall not all die, but we shall all be changed."