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definitely get that new ECU Sparky. it is almost worth keeping now:) no other Yammy dealer around here. gotta say a big THANKS to this thread to help in solving the problem. :rocks:

well. this completely resolved my issue for anyone reading this. the new ECU was the magic fix and had a good test on Sunday morning with -15c temps! now i'll go and tell the dealer how to fix this problem. they told me all sorts of things but didn't believe the ECU was the fix.

just got my new 10 ECU in the mail. i'm sure hoping it helps with my start issues. mine sputters as well and won't start at all when it is really winter out. the major problem i have with these Phazers is i leave it sit the day after getting into the backcountry... i come back in the late...

Great. Thx.

Hmmm, that is good to know. Where is this plug? Can u snap a pic of it? I want to try that on mine tomorrow a.m.

i found one for the MTX model. hopefully i see a change in it. that info came from the Service Bulletin from Yammy...i will post back when i know. it is a new one.

Great. i have got new plugs in and that didn't seem to make one bit of difference. in fact after fuel soaking them i pulled them and went to a fresh spare. i am hoping to get just a ECU, no Spring. so is the MTX the same code ECU as the others? found this... ID MARK: FOR MOUNTAIN...

Phazer Update hi folks, i just picked up a 07 MTX Phazer a month or two ago and now that the weather has become WINTER it is a bugger to get going. actually when it's this cold it won't start at all. even if i boost it and get it turning over quick, she won't fire. warm it up and no issue at...