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poppa

11 450f hard starting

8 posts in this topic

Using the high load/ sand map at the top of this forum, the bike is hard to start after a hard run get off. Anybody have any ideas? Bike has about 50hrs, good gas, oil changed every race. Dosen't seem to be as much an issue with bone stock map.

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My 2011 is a bitch to start when it's hot. I have the Jay Marmont tune with an FMF slip on. It fires up cold no problems but when it's hot it's a bitch. I have been using the fast idle/ hot start knob more and it seems to help. I wish they went back to manual compression release. When I went down or stalled my 426 I would just put it in neutral and pull in the manual compression release then kick it through 4-5 times. That beast would start up the first time every time.

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Like the other poster mentioned, sounds like procedure error. I thought mine was harder to start with a different GYTR map, but as long as I follow procedure, it starts the same crash, stall or kill switch. The only difference is I have to clear it out, per the manual, with the throttle wide open when if I crash, then start it.

Also, I don't think the starting map is different whether or not you have a GYTR map or not, from what I've heard.

Other issues could be valves @ 50 hours. Mine were on the tight side of spec at the first check, so if yours are already tight it could be causing issues.

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thanks for the replys. I will go through the procedures with the rider (my son ) again an we are checking the valve lash this week. From what I understood the mapping change that we did wouldn't affect the starting, just a hurry up leg.

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Pull the cold start knob out and try, yes it works very well when the engine is hot.

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