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Computer ignition to 150 style, old yamaha

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J.Kimmerly
 PostPosted: July 8th, 2016, 10:46 am   
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Joined: August 29th, 2013, 10:02 pm
Posts: 65
Location: Victoria, BC
It was around the time i first got the boat and i figured it was dirty carbs. It wasn't. Then i played with the main jets, It had hydro tec heads on it and i got some extra jets with the boat so i figured maybe it had never been jetted properly. Then it slowly went rich again so i took the prime start unit apart to see if it could be it.

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DoktorC
 PostPosted: July 8th, 2016, 12:02 pm   
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Joined: March 31st, 2012, 5:53 pm
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Location: Lapping lil charger
J.Kimmerly wrote:
Is there any acceleration to be had by advancing the timing? Or do you just get speed holes in the piston? I set it to 22 degrees. Running 94 chevron.


I think 23deg is stock....but you can go 25deg on the lake. I'm not sure how much farther with out speed holes occurring lol.

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