Fastassbanshee96 Posted September 25, 2014 Report Posted September 25, 2014 I'm at a complete loss! I have a 4mil serval with 35pwk air strikers and R2 pipes. It's been running like a raped ape and all the sudden it's cutting out on the top end. Pretty much in a drag race condition, it pulls awesome off the line and about 150-200ft out hitting right around 3rd gear it starts breaking up and cutting out. Thought it might have been lean but the plug are showing that it's rich. Timing is at +4 and shows good on the plugs. Compression is 175lbs in both cylinders. Put a new coil, wires and caps on it and same thing is happening. I was thinking cdi but everything I know about them is either there good or there not. No inbetween. Like I said I'm at a loss. It's feels great down low. Also jetting is at 158- 50 and about 500ft above sea level. Please let me know what you think it is and thank you in advance. Quote
Fastassbanshee96 Posted September 25, 2014 Author Report Posted September 25, 2014 But wouldn't that cause problems on the low end as well? Quote
wayne_smith97 Posted September 25, 2014 Report Posted September 25, 2014 No, Chinese stators have been know to cause problems on top end. Possibly even Ricky stators Quote
Fastassbanshee96 Posted September 25, 2014 Author Report Posted September 25, 2014 Yeah this is the stock stator. Would checking ohms still tell me if its good even thought it's only happening on the top end. Quote
Fastassbanshee96 Posted September 25, 2014 Author Report Posted September 25, 2014 Ok stator is at 19ohms and pickup coil is at 120ohms. Quote
Larry's Shee Posted September 25, 2014 Report Posted September 25, 2014 clogged cap vent or petcock filter Quote
Fastassbanshee96 Posted September 25, 2014 Author Report Posted September 25, 2014 I don't think its the cap but I'll check as well as the tank. Quote
wayne_smith97 Posted September 25, 2014 Report Posted September 25, 2014 Pull the fuel supply line from the carb, turn fuel on then remove cap. See if there is a big difference. Quote
Fastassbanshee96 Posted September 25, 2014 Author Report Posted September 25, 2014 I'll give it a try tomorrow. Is there a possibility it could be the cdi or was I right when saying it's either good or it isn't. Quote
Fastassbanshee96 Posted September 26, 2014 Author Report Posted September 26, 2014 Also could this be a reeds issue? I have vf2. I took them out to check them and they aren't cracked or chipped or anything but felt a little loose like there wasn't as much spring to them. So I flipped them over and they tightened up but still same problem. Quote
Larry's Shee Posted September 26, 2014 Report Posted September 26, 2014 Lots just gut the spill valve from cap. CDI is pretty much a go/no go item, very seldom do they loose only half their mind. I bet a buck it's fuel delivery problem. you'll be surprized at amount of junk stuck to petcock screen. Quote
Fastassbanshee96 Posted September 26, 2014 Author Report Posted September 26, 2014 Took the petcock out and everything was clear. Pulled the screens and blew air thru the petccock to make sure there were no blockages. Checked the cap and same thing and clear on that. Try it out and still doing the same thing. Just so I can 100% rule out the cdi, can I take and cut my plug off and slice it onto a different year cdi with no problems? Quote
wayne_smith97 Posted September 26, 2014 Report Posted September 26, 2014 You can but I would just pull the dins out and switch clips Quote
Fastassbanshee96 Posted September 26, 2014 Author Report Posted September 26, 2014 Well it's the 87-96. So one is flat the other is round pins. Quote
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