Hello, I'm hoping someone can give me some insight. I have twin 1987 Yamaha 200 engines with 1100 hours on them. One runs fine, the other one will start and I can rev it in neutral but it will not idle and I cannot run it under a load. if I try to power up, the engine stalls. Here's what I've done so far, I've swapped carbs, CDI unit and stators from the good engine to the bad. No change. I've installed new fuel pumps and replaced all fuel lines. Compression is good and the timing advances properly. I've also checked and I have spark to all cylinders. Any ideas on what the problem could be?
Thanks
Mark
Thanks
Mark
Comment