I know this is a yamaha forum but please help me the AC forum didnt help me at all. its a zrt 600 has milled head i believe .030 off of it, wiseco pro lights, and vforce 2 reeds new coils stator and wireing harness has 155psi and runs on 93 oct and the idle is set to 1800rpm. the problem i am having is when it cold starts it only runs on 1 cyl then after a second the second one fires up then the third one eventually fires up and until it gets up to OP temp its is extremly doggy on the throttle. once it gets up to temp it stars fine and it runs great with no problems the plugs look fine and from my experience it isnt acting like it has an air leak or a lean spot but i wouldnt know unless i did a leakdown.
Team Parent Racing
Member
clean the pilots or install a little larger