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Z750 hot start problem

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purehavok View Drop Down
Moto2 racer
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Joined: 26 Oct 2015
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    Posted: 20 Jun 2018 at 20:28

Hi guys

Got an issue with my stepdads bike, hes got a z750r 2009 with 22k on the clock. Serviced fairly recently.

Its developed a hot start problem. Turns over as normal but dont seem to fire. Give it some throttle and its fine. When its cold or cooled down it starts first time every time. Idles right and everything.

Battery voltage is about 14.3 running and 12.6v sitting.
No overheating issues, fan comes on at 105c ish.

Seems a issue in kwaks on some models.. any pointers?
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Shyted View Drop Down
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Joined: 20 Jun 2015
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Shyted Quote  Post ReplyReply Direct Link To This Post Posted: 22 Jun 2018 at 23:56
Hi mate.
When was the last valve service ?
If the answer is don't know ,when you run out of other options, look there .
Exhausts can get tight as my 1100 ZRX did .
Regards Ted.
I used to be uncertain , but now i'm not sure anymore
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purehavok View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote purehavok Quote  Post ReplyReply Direct Link To This Post Posted: 23 Jun 2018 at 16:04
Hi pal.

It now no longer starts if its cold without quite a bit of throttle. However camshaft sensor has come up on the efi. Need to find the manual out on how to test it but makes sence now!
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