Bjorn
XS650 Addict
Hi guys,
I could really use some help fixing my bike. I plan on going for a trip next Friday with some friends. I've been building my bike for way to long and trying to get it running. Here is the situation.
Bike starts fine, runs strong for anywhere between 15 and 45min, after that it starts to misfire, stumble or hesitate. I notice this especially in the lower rpm range or small throttle openings. If I let it cool down for a bit, see runs for a while before it's back.
I really don't know where to look anymore. Here is what I've done so far or some background info:
-Got a new Speedo with voltmeter. Charging seems to be ok around 14,5v
-i suspected the coil. Changed it for an identical backups I had laying around. Measurements show similar ohm values between the 2 coils when cold. With it I replaced the plug wires, caps and plugs. Did not make a difference.
-then I thought it might be fuel related, because if I give it WOT it pulls through the stumbling. Although it's hard to be 100% of this in traffic.
I did not to anything to the engine/exhaust/intake during the build. Bike ran fine before. I cleaned the entire carbs, checked the diaphragms, all the jets, the choke (enriches) nothing weird found.
- bike has fuel in the tank
- cleaned the airfilters, they were dirty. Proper KN ones, been running them for multiple years.
-camchain play is ok. Valves were somewhat sloppy, redid those.
- bike has TCI ignition. Oem pickup, aftermarket replacement carmo TCI box.
Does anyone have anything to aim at? Time is ticking and I'm lost.....
I could really use some help fixing my bike. I plan on going for a trip next Friday with some friends. I've been building my bike for way to long and trying to get it running. Here is the situation.
Bike starts fine, runs strong for anywhere between 15 and 45min, after that it starts to misfire, stumble or hesitate. I notice this especially in the lower rpm range or small throttle openings. If I let it cool down for a bit, see runs for a while before it's back.
I really don't know where to look anymore. Here is what I've done so far or some background info:
-Got a new Speedo with voltmeter. Charging seems to be ok around 14,5v
-i suspected the coil. Changed it for an identical backups I had laying around. Measurements show similar ohm values between the 2 coils when cold. With it I replaced the plug wires, caps and plugs. Did not make a difference.
-then I thought it might be fuel related, because if I give it WOT it pulls through the stumbling. Although it's hard to be 100% of this in traffic.
I did not to anything to the engine/exhaust/intake during the build. Bike ran fine before. I cleaned the entire carbs, checked the diaphragms, all the jets, the choke (enriches) nothing weird found.
- bike has fuel in the tank
- cleaned the airfilters, they were dirty. Proper KN ones, been running them for multiple years.
-camchain play is ok. Valves were somewhat sloppy, redid those.
- bike has TCI ignition. Oem pickup, aftermarket replacement carmo TCI box.
Does anyone have anything to aim at? Time is ticking and I'm lost.....