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Old 09-30-2008, 07:51 AM
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Pablo Pablo is offline
Master Bike Builder & Forum Sponsor
Join Date: Dec 2007
Location: Duvall, WA PNW
Posts: 3,649
Default Re: It Ain't the Spark Plug !

5 mm? That's like a foot in metric!!

START with a NEW plug. Gap that dog 0.020-0.025 and go from there.

At this point I also suggest things such as:

Drain the tank and remove that absolutely stupid in tank screen.
Make a FRESH batch of premix (go BUY FRESH low octane fuel from a busy station). Get a good oil and mix it 30:1.

Remove the cylinder head, wipe down the sleeve and head, replace head gasket and retorque.

Check the needle taper.

Get a new plug wire.

Replace the intake gasket.


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