Soot on Spark Plug fouling - Page 2

05-07-2010, 11:25 AM

#11

JimR

The YF Old Git

Ride: Sharon Stone

Join Date: Oct 2009

Location: Malvern Worcestershire UK

Ride: Sharon Stone

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Quote:

Originally Posted by Adam

These are all good leads to follow, but nobody mentioned your "choke" circuit. I believe your carbs have an "enrichening" circuit that adds fuel when activated by the choke lever. That plunger is kept closed by a spring and when you push/pull the choke lever, it lifts it and allows more fuel to flow. You have to unscrew that fitting and make sure it is closing off the fuel flow when the choke is not applied. Good luck!

The choke is 'kept closed' with a cable & springs on each "choke" with 1 cylinder playing up it is unlikely this is at fault ... pay the fare over & I'll fix it !

__________________
http://yamahaforum.com/forums/member...ure31t-tzr.jpg The TZR does a 100mph in second and 100 to a gallon of fuel

stop being boring !

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