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Old 20-01-14, 06:07 PM   #2
jonny.boyd
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Join Date: Mar 2010
Location: Bedfordshire
Posts: 215
Default Re: Help?!

First pull spark plug after trying to crank the bike - is it wet?

If wet then fuel is getting into cylinder but not combusting.

If dry then fuelling issue - no fuel getting into cylinder

IF you are getting fuel into cylinder then the next step is to check for a spark - pull the HT lead off the plug and stick a screwdriver or something of the sort into the HT lead. Hold onto the plastic handle and hold the side of the screwdriver about 1 cm away from engine block - use common sense, don't hold onto metal part - you'll get a shock, and obviously don't try near fuel!

When you crank the bike you should see very obvious sparks grounding on the engine block.

No spark - electrical fault (sensor / ignition coil, etc)

Spark - then in theory bike should be trying to go

This a start in diagnosing whats up with it.

Hope it helps
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