also, stalls when warm and won't start unless I give in some throttle.
Once warm, what does it do when you make very fine changes to the choke lever? Does it get worse, or better?Still doing the same with air filter in.
It will rev when cool but when fully warm it's like the rev limiter on about half throttle and above in neutral. It wont go anywhere when in gear.
Items 4 through 6, which the needle attaches to...does that slide up and down easy with only the resistance of the spring?Sorry for the delay I've been busy. Thank you for all the replies.
I went through the carb again probably 3 more times adjusted the air fuel screw same results. Below is a video of what it's doing. It's sputters bad from half throttle.
Hopefully other guys with more experience can weigh in. Especially on the compression number. Only remaining thing I'd say is get yourself a new multimeter, and then go through all the troubleshooting and diagnostic sections in the factory service manual. I'd not bother with the carb again until you check those other things. And if all it did was set for a while, I don't see how the timing could have changed.@tythomps yes needle slides freely with resistance of the spring. I've rechecked this a bunch. diaphragm looks good and pliable.
No one I know of has a grizz 450 but the owner has a new kodiak 700 though.
Checked compression again tonight and nothing over 120.
Could timing cause this issue? The valves have been checked and adjusted to within spec. I haven't had the cover off to check chain yet but I did check tensioner and looks good.
How about coil, stator, pick up? I needed to order a multi-meter because mine took a crap. I will test the resistance but I read that the stator may still be bad even if it checks out?
Ugh the Grizz has me on the ropes.
Thanks for the help here much appreciated!
I'm just as stumped as before. Only remaining thought is you keep using term air screw, but on these carbs they are actually a pilot screw. Difference being that you turn the screw out to richen the mixture, opposite of an air screw.Yeah she run fine if I'm on the throttle up to about a quarter, above that when warm it gets hairy and that's the sputtering you here. She won't idle for crap either I've adjusted everything, air screw, float height, idle adjustment. The wiring does seem like it's been messed with on the right side of the Quad underneath the top frame gas tank. 1 wire goes to the LCD has no effect the other one is connected. I don't see any other wiring issues I did put some Dielectric grease in all the fittings.
Like I said I ordered a multimeter that arrived today I'll check resistance on components tonight if I have time. I also ordered a Dynojet kit. I'm grasping at this point.
Thanks for all the input so far I really appreciate it. Let me know if you have any other Clues.