749S Misfire

bike mad · 13-Sep-2006, 20:01

my one was the back cylinder, lot's of water and crud and thats with a rear huger,

Wylie1 · 14-Sep-2006, 13:05

As mentioned already, it does sound like a faulty coil. You can tell which cylinder isn't firing by checking which exhaust pipe isn't getting hot.
Once you've identified the problem cylinder, remove coil & clean as suggested above. If cleaning doesn't work, I have a spare pair of coils (used but work perfectly) & would sell one of them. Let me know if you're interested.

red seb · 14-Sep-2006, 23:23

Fault :- Water in the plug holes clean coil and plug tops (these may even be loose) spray with wd 40 and seal with silicon jobs a good un! do not buy new coils until you've done the above. Mines done it several times before I sealed them up.

Cheers Seb

GeoffDuc · 20-Sep-2006, 12:03

Thanks for the feedback everybody.

New plug (old one was well corroded) and a good clean/spray and I'm back up and running!

Thanks again - Geoff

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13-Sep-2006, 20:01	#1
bike mad Registered Forum User Mille Posts: 297 Join Date: Jun 2005 Location: just out side sidmouth in devon my one was the back cylinder, lot's of water and crud and thats with a rear huger, Reply

14-Sep-2006, 23:23	#3
red seb Registered Forum User Montjuic Posts: 58 Join Date: Jan 2003 Location: NORTH CAMBS Mood: anticipation Fault :- Water in the plug holes clean coil and plug tops (these may even be loose) spray with wd 40 and seal with silicon jobs a good un! do not buy new coils until you've done the above. Mines done it several times before I sealed them up. Cheers Seb Reply

20-Sep-2006, 12:03	#4
GeoffDuc Registered Forum User Posts: 12 Join Date: Sep 2006 Location: Guildford, Surrey Mood: Reflective Firing on all 2 Thanks for the feedback everybody. New plug (old one was well corroded) and a good clean/spray and I'm back up and running! Thanks again - Geoff Reply