Notice the piece of school dress stuffed into the engine...
Sand, I'm told. I don't see how it can even get there. Current owner said that tyres were "full of sand" when he replaced them.That is down right nasty!
In the context of GS911 and Motronic 2.4 that we have on these, the term "Idle switch" means Idle-actuator - this also called TVA in some technical documents (Throttle Valve Actuator). To be even more specific, the "idle switch" is one circuit (out of 2) of the TVA located at the end of the piston. It is basically just an ON-OFF switch....
Idle is too high at 1500 plus. Scan of stored faults says "Idle switch, open circuit since ignition on."
I thought that the idle switch was for other functions and the TPS takes care of the idle speed?
Actually, a flood does present itself as a possibility. It is about the only way that sand could flow into those intricate engine areas and may explain the school dress remnants absorbing something.Did that sit under a pigeon tree undressed for a year? I am with John Z. That is nasty. Maybe it was in a flood but tires full of sand has me stumped unless someone was trying to do a poor mans Dynabeads with some play sand from the kid's sandbox.
All looked fine, bar one dead Crane fly. My guess is that it was all cleaned out. There was a pristine BMW branded air filter fitted and the oil was quite pale, so it had been serviced before sale.Have you pulled the air filter yet? I bet the air box is filled with crap as well.
So probably not caused by flood. When you look at the dirt all over the frame and other components it looks like a bike that has spent a lot of time on dirt roads. Mine had a little bit of that when I bought it but I cleaned it all up. I can't understand people who would leave that mess. For someone to have serviced it and not cleaned it is inexcusable.All looked fine, bar one dead Crane fly. My guess is that it was all cleaned out. There was a pristine BMW branded air filter fitted and the oil was quite pale, so it had been serviced before sale.
I found lots of screws too tight / too loose / wrong type or in the wrong locations, which told me that it wasn't done by a professional.
Ok, this just leaves one more question. What happened to the little girl who was wearing the school uniform.Customer tells me that is was imported from Saudi Arabia, which is why it has a metric dashboard too. That explains sand, but not how much fine silt has got into its intricate little places. The brake master cylinder hose was "painted" with it but the clutch side was untouched.
The brake fluid I drained was like treacle, brown and thick. That took some cleaning out. Then trying to fit his new hoses (German manufactured) it was found that they fit, but not nicely. In particular, the rear hose needed a twist which it really didn't want to do. I was reluctant to fit it, but the twist required is just on the border of being acceptable. Otherwise I will have it my workshop for another week and I haven't got to the idle control valve yet either.