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Ensin kysymys:
"Hi I hope someone out there can help. My ’98 900 let me down today for the first time in 44,250 miles.
I was riding along when the engine just stopped firing. Lights, horns, starter motor and indicators all work but the engine just wouldn’t fire. I tried wobbling the side stand / switching the kill switch on and off checking fuses but it still wouldn’t fire.
I was only a couple of miles from my usual garage so I started the walk (but got a lift in a sporty Mercedes to the garage). My mechanic came out to see the bike but turning the key the bike fired (don’t you hate it when it does
that!). He suggested that it was probably the side stand kill switch but he could be sure because the bike was working. He also didn’t charge for the call-out so if anyone is in the Great Yarmouth (UK) area, Smiffy’s Superbikes in Acle has my recommendation.
However, 4 miles down the road it stopped again. I tried all the usual wobbles and it again failed to start. I was reconciling myself with a long push or calling out the spannerman when I had another try of the ignition.
It seemed to spin for several turns when it suddenly fired into life.
Riding carefully along, I managed another 5 miles when it cut out again. Trying the wobbles etc it wouldn’t start and the battery was beginning to suffer. I got ready to push it home (just over a mile) I clipped my helmet under the seat and banged the seat down. I thought I’d give it one more try
and the bike fired.
I felt convinced it was the side stand, but didn’t want to aggravate it until I got home. Trying when I got home I could start the bike with the stand down. The kill switch only operates when the bike is in gear, and then the engine won’t turn over. The problem I had on the road had the bike
turning over but not firing.
I’m now at a loss as to what it might be – and I can’t use the bike to commute to work ‘cos I can’t be let down.
Does anyone have any idea where I could start looking? I don’t like intermittent electrical problems."
Ja sitten vastaus (itse asiassa koostettu kolmesta eri vastauksesta):
" Classic symptom for the ignition pick-up sensor (the pickup coil, in right side engine cover) failure. Simple to replace. That's where I would start.
Ja toinen vastaus:
"In the Sept '03 issue of Tech Q&A, I talked about pulse generators or, as Triumph calls them, crankshaft position sensors. These are little electrical gizmos that sit at one end of the crankshaft and tell the black box when to spark. I also mentioned when one dies, it's not so bad because you can diagnose its departure with an ohm meter. I guess I should have said that carburated Triumph pulse generators are notorious for croaking, stalling the bike, and suddenly springing back to life as the engine cools down. And that a
friend of mine who owns a Triumph keeps a spare one under the seat of his bike so he wont get stranded by the thing. Most of the failures seem to occur after about 13,000 miles. Remove the right lower fairing so that you can quickly gain access to the round engine cover at the base of the cylinder block. Take a ratchet with an 8mm socket and an aerosol can of brake cleaner and ride around your neighborhood until the bike quits Remove the engine cover and give that black
cube – the crank sensor – a long blast of icy brake cleaner to cool it to down. Touch the starter button and I'll betcha the bike fires up. Don't worry, engine oil will only spit out with the cover off.
The only thing about Triumph crank sensors are that compared to the Japanese equivalent, they're quite affordable-under 80 bucks." (Ja tähän vielä vastaus; " I DO NOT RECOMMEND using brake cleaner to cool any thing. Because it is a little FLAMABLE!!!!!!!!!!!! And may damage parts.
Use a can of Dust spray, it is usually used to dust off computer parts. It does not cost very much and it will NOT damage any thing.")