I have a problem with my 07 700 that has me pulling my hair out. Bought the 700 new in 07, currently has 230 hours, 1290 miles. Mostly stock, except K&N, and clutch mod, the pod mod to add fuel, wheels and some 26" tires.
3 years ago while doing some trail riding it developed a low speed miss, wouldn’t idle, would backfire occasionally but ran well in mid to upper RPM. I thought I had gotten bad gas, or something had gotten wet because it went away the next day. Then from time to time it would occur again but go away. Well about 3 weeks ago, my son was on it and it quit completely, would crank fine, but no start. Checked for spark, had really poor, pale orange, intermittent spark. Changed plug (old plug looked great), still no start, changed coil, fired right up…thought problem was solved. However it still had a miss and surge while riding. Rode for about 10 minutes and it quit and wouldn’t start back. No codes found in diagnostic. Found the wires coming out of the stator had rubbed against the motor mount, rubbing bare and grounding out 4 of the 5 wires. After un-grounding it fired right up. I cut and re-soldered the 4 wires, heat shrink, and black plastic cover protected them.
Rode for about an hour, ran perfect, no misses, stumbles, back fires….perfect. Then all of a sudden, the issue was back, it quit again, but this time it would start back, but had a terrible miss, and backfiring…..plug looks black and damp, strong smell of gas. Weird thing is, sitting still and reving the engine up in park, the speedo will jump around from 0 to about 20 mph (its not in tach mode)??? Still no codes, checked the TPS in diag, says 16 with the throttle closed, 101 wide open.
Does anyone have any ideas?? Hate to take it to the dealer when I can change parts as easily as they can. Speed sensor? ECU? CDI?
Thanks in advance for any help!
