Quick fix help is needed

[Guest]

My #2 plug keeps fouling out because (ASSuming) extra fuel is coming out of the vac hose when I have the carb in the "Run" position when the bike is parked. As a super quick fix, I have been running it on PRI when I ride and it rides well. Whenever I park it, I use my handy mini flat head and turn the petcock to Run. Until my Pingel gets here, can I plug the Vac hole on the petcock and the vac hole on the carbs and be ok while riding, durring startup after I turn it to PRI, and when its parked?

I guess Im just not sure if the petcock requires vac. to initiate fuel flow. For clarification, I turn the petcock from "Run" to "PRI" right before I start the bike when I go to ride. When I park it, I hit the kill switch and then turn the carb to "Run" before I walk away from it.

[Steve]

As I understand it, even the PRI function requires just a puff of vacuum to start working on those dreaded '80 petcocks.
Once they see that initial puff, they will continue to flow.

I am curious now, why is it that my '80 850G THANKFULLY has a "normal" petcock?

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[Katarat]

You can plug it but it sounds like the rubber diaphragm is bad so it may not matter. Pull the gas line off & see if it works or not when you do it. You have a problem with that carb too, the needle & seat should stop the flow so I doubt this will cure your problem, otherwise they would all be doing it. Please include the year & model when you ask questions.

[hampshirehog]

Won't work on your fuel tap. That POS design needs vacuum to open the diaphragm on prime. Once it's open on prime it stays open (or should do if it's working properly) even with the motor switched off. In the run position the diaphragm should only be open with the motor spinning.

[Steve]

Please include the year & model when you ask questions.

It's in his signature.

It's there with every post.

Highly recommended technique (hint, hint).

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