YZF with fuel injektion - Yamaha Raptor Forum
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post #1 of 6 (permalink) Old 09-23-2018, 12:50 PM Thread Starter
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YZF with fuel injektion

Hi

I have 09 YFZ450 it wont start when its cold with the start Button, but its easy to start when someone push me. When the motor is hot I can start it without problems, has anyone had this problem ?

Michael
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post #2 of 6 (permalink) Old 09-23-2018, 01:53 PM
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You need to adjust your valves. Especially your intake.

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post #3 of 6 (permalink) Old 09-29-2018, 04:32 PM Thread Starter
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Hi
Thanks I have measured the clearance between cam and valve for intake and on to valves there was no clearance so maybe this is the problem. No I have to find new shims and then we must see. I could see little scratch un camshaft so maybe it was in last minute

Thanks for your advice
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post #4 of 6 (permalink) Old 09-29-2018, 04:48 PM
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That is completely the issue. Keep us posted please.

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post #5 of 6 (permalink) Old 10-04-2018, 01:04 PM Thread Starter
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Hi
The shims on my Atv was 130 so I bought 120 is was the thinnest I could find but this was not enough.
When I removed the shims there was 0,4 mm and 0,25 mm so my shims have to be 0,25 and 0,1 mm. Do I then have to overhaul the cylinder head

/Michael
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post #6 of 6 (permalink) Old 10-05-2018, 11:27 AM Thread Starter
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Hi
The shims on my Atv was 130 so I bought 120 is was the thinnest I could find but this was not enough.
When I removed the shims there was 0,4 mm and 0,25 mm so my shims have to be 0,25 and 0,1 mm. Do I then have to overhaul the cylinder head

/Michael
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