2004 Yamaha Venture 500 twin blowing sparkplugs

dardurfr

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Joined
Jan 23, 2017
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Location
Francois,Newfoundland, Canada
Hi guys, new to the site. Got a problem with my sons Venture 500. Its constantly blowing spark plugs. I'm using BR9ES like it says in the manual. Wondering if something needs to be adjusted or do I have a bigger problem. The machine has 8500km on it and this problem just started happening this season. Someone told me to disconnect the lube injection pump and mix the gas but not sure if this would cause it to blow plugs or not. Any input will be greatly appreciated, especially if it fixes the problem. Thanks in advance.

Darren
 

I read the link and it brought back to mind a post that some sleds need resistor plugs ,, some need sleds resister caps and some don't.
and wont run correct with wrong combination .... other concern,,, all plugs from same box ???
NGK were plagued with people importing knock off plugs ... had been pictures of how to tell them apart
by where the printing was positioned .... I had a box of B9es a few years back and was using them in a Quad plug Cat and dumped the Cat
as it wouldn't run right and expect it was the plugs .
Good luck
Ron
 


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