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I unfortunately can't remember the exact compression numbers. I believe one read 150 and the other was closer to 135-140.

Figured I should go back and update this post if anyone having the same issue comes across it. I'd replaced the entire stator with a brand new one and still seemed to have the same issue with the ski not accelerating properly once warmed up. I finally got around to checking compression; one...

Fuel lines were replaced with clear Tygon lines, which I've read to be some of the best fuel lines available so idt it's that. I cleaned out and reused the original pulse line so that's probably not it either. Stator plate was torqued down pretty well. I'm pretty confident with my carb...

Cleaned and dried fuel tank when I did the engine swap, fresh fuel, new lines. Haven't checked popoff yet, I'll add it to the list of things to check if the new check valve doesn't solve the problem.

Coils are nearly brand new and cleaned the carb/new mikuni carb kit before I took it out this season. Exhaust leak is a possibility but I haven't seen any sign of one when I ran it without a hood once it started exhibiting the issue. The issue also began at anything above 15% throttle so not...

Thanks for the response. I just received a new check valve in the mail yesterday but haven't put it on yet, as the old one wasn't working; hopefully that'll solve the issue. It could be that the broken check valve had something to do with the air bubbles in the lines. I also tightened the lines...

Haven't tried removing the temp sensor yet but I feel like if it was going into limp-mode it should have cut the power almost completely. Worth a shot I guess

The ignition wires only have about 4 hours on them since I replaced them last season but I'll consider it a potential issue. Strange that it only happens once the engine is warmed up.

Over the spring I swapped a 701 61x/61x (from a 95 wetjet) into my 91 SN 650 (oh man does this 701 beat the hell out of that old 650 haha). Engine-wise, it's a stock 701, single carb, stock exhaust, stock 701 cdi, new coils. I did a carb kit and replaced all fuel lines. I also added a pisser...