Grand Prix 250
Main Motorcycle: 955i Tiger
Join Date: Aug 2008
Location: Cambs UK
Other Motorcycle: Honda Blackbird
Extra Motorcycle: 1972 Yamaha YR5
Hi guys, I'm a Tiger owner so not familiar with the bike BUT some simple elimination could help here.
If it were a coil problem it would drop on to one cylinder but would still respond to the throttle, likewise any suggestion of carb diaphram, some throttle response would be evident.
If it was fuel starvation caused by a blocked tank vent, the bike would die, sit for some minutes unable to start, then start normally. While it won't start, opening the fuel cap will result in a "whoosh" of air into the tank.
If it were crankshaft sensor, it would die when hot, then restart normally once it had cooled down.
If it were a fault with the cable linkage it would do it all the time, not mysteriously fix itself.
If it has a throttle position sensor (TPS) it could be the problem, but my experience of this is that they tend to cause slight misfires, not a tickover throttle.
That only really leaves the CDI. If it's like the ones in early Tigers, Tridents etc they are know to play up so thats where I'd look
Just my two penn'th....
Sorry, had to break off as the wife brought my dinner.
Thinking about it, if you have carbs and a CDI, the CDI is only doing the ignition; the carbs and throttle cables are doing everything else so some sort of fuel starvation is the only answer. Anything else will cause misfires,a complete cut out or leave at least some throttle response.
Last edited by Bixxer Bob; 12-10-2012 at 03:39 PM.