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Author Topic: 2001 660 Raptor 11:1 Compression - Hard to Start  (Read 5781 times)

Offline pcataldo

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2001 660 Raptor 11:1 Compression - Hard to Start
« on: September 12, 2008, 07:54:23 PM »
My nephews 2001 660 raptor has been at the Yamaha Authorized dealer for 1 week raptor would not turn over, I changed Starter, Relay, Coil, Regulator,Plug, Oneway.  THe Dealer Said that the Compression is to high thats why it wont turn over

Help, I am out of Ideas???????????????????????????

Any help or direction is greatly appreciatted

Phil
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Offline Colorado700R

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Re: 2001 660 Raptor 11:1 Compression - Hard to Start
« Reply #1 on: September 12, 2008, 08:12:50 PM »
is the decompression mechanism working properly?  11-1 shouldn't be too much compression if it is.

Aaron
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Offline 1FST690

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Re: 2001 660 Raptor 11:1 Compression - Hard to Start
« Reply #2 on: September 12, 2008, 08:13:29 PM »
1st things first, can you manually turn the engine 360 by turning the crank? How much compression does it have? Does the starter TRY to turn the engine over? Any and all info you can provide will make it a ton easier to diagnose.
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Offline Peelz

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Re: 2001 660 Raptor 11:1 Compression - Hard to Start
« Reply #3 on: September 12, 2008, 08:17:58 PM »
There has to be a better reason than "too much compression"!  Like colorado said. Dealer is blowin' smoke up your a$$. It doesn't turn over at all? ??? If it tries to turn, but doesn't at all , problem may be worse than just compression.  :help:
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Offline pcataldo

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Re: 2001 660 Raptor 11:1 Compression - Hard to Start
« Reply #4 on: September 12, 2008, 08:18:32 PM »
I will Get More Info Tomorrow Thanks
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Offline pcataldo

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Re: 2001 660 Raptor 11:1 Compression - Hard to Start
« Reply #5 on: September 12, 2008, 08:20:42 PM »
I agree with you guys this dealer first said i was just starter relay, now he is changing his tone. He wants to ope motor translation more $$$$

Thats why i am reaching out to you guys

Thank you

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Offline Peelz

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Re: 2001 660 Raptor 11:1 Compression - Hard to Start
« Reply #6 on: September 12, 2008, 08:24:45 PM »
If it turns but spins free, need gear. If it turns but hard..battery or starter easiest, or wiring next. After that, it could be decompression mechanism not working. Not turning at all, starter, or relay.

worst case scenario-motor frozen..a-la YFZ450. Sorry Kyle, had to say it.
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Offline kyledvor61

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Re: 2001 660 Raptor 11:1 Compression - Hard to Start
« Reply #7 on: September 12, 2008, 09:30:10 PM »
Quote from: Peels660 on September 12, 2008, 08:24:45 PM
If it turns but spins free, need gear. If it turns but hard..battery or starter easiest, or wiring next. After that, it could be decompression mechanism not working. Not turning at all, starter, or relay.

worst case scenario-motor frozen..a-la YFZ450. Sorry Kyle, had to say it.
you son of a bitch :(
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Offline UncleBeaner

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Re: 2001 660 Raptor 11:1 Compression - Hard to Start
« Reply #8 on: September 24, 2008, 07:49:48 PM »
pull the plug and try cranking it over :thumbs:
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Offline Tribal_superman

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Re: 2001 660 Raptor 11:1 Compression - Hard to Start
« Reply #9 on: March 01, 2009, 01:32:49 PM »
I have 11:1 compression and it starts everytime:D
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Offline 4stroker

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Re: 2001 660 Raptor 11:1 Compression - Hard to Start
« Reply #10 on: March 01, 2009, 07:08:13 PM »
put a grizzly 660 battery in the bike more cranking power. i had problems with the decompression pin shearing off after a while. get the battery and junk all the decompression parts u dont need to run them
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