Yamaha governor bypass

[Wynelocked]

Originally Posted by smallblock450sl

Have you ever spent the money on a new "TCI" unit ? "Jump" that spark one time and you could be buying another one. Get a "dynamic" spark tester. If you disconnect the air box hose at the carb and it runs better...you have an airbox sealing problem.

Trust me...Dave is a gas guru.

[shawn.m]

been doing it for 30 years on everything motorized. put spark plug on block and crank it. how does that blow out to TCI?

[smallblock450sl]

Originally Posted by shawn.m

been doing it for 30 years on everything motorized. put spark plug on block and crank it. how does that blow out to TCI?

Shawn..I have no doubts of your mechanical skills, My suggestion to use a spark tester is to save members possibly alot of money. Yamaha's from 1979 (G1's) thru 1995 (G14's) used a "CDI or TCI" electronic ignition sytem. It is based on open/closed ground. If by chance, when grounding a spark plug for a spark test and the spark "jumps or loses ground" It "can" and "has" many times damaged the "CDI/TCI" unit. There is no fix, just open your wallet and buy a new one. In 1996 Yamaha (G16) went to a "magneto" ignition and you can ground the plug to check for spark without damaging anything, but I still use a dynamic spark tester, it shows me a veriaty of things...the engine is running and it shows "spark strength/color and if spark is lost at some point". Hope this explains my suggestion alittle better. Dave

[smallblock450sl]

Originally Posted by Wynelocked

Trust me...Dave is a gas guru.

Thanks for the kind words, but please, don't call me a anything "special". I just try to help if I can. I feel good when my suggestions have helped and I feel bad when they don't. I am not special at all....Dave

[alfa29r]

i bought a preset plug .cleaned the air filter out and reinstalled it.the starter will turn over ,but it wont fire,it wants to go ...the plug spark color should it be a dark blue or does it matter.what does the igniter do..can anybody walk mew thru the diagnostics on this g5,what should i check for? thanks,and party on.

[travisty]

thanks rusty!

On the G8 the gap is .03

besides the spark gap the biggest problem on mine was the air. the old canister filters really rob the power and get dirty way to fast. Also your filter may have gotten some oil on it which will cause it to fail. You said you ride it on your land alot.. if your crankcase is close to or too full oil will spill back through your breather tube and into you canister box. thats assuming it's a bumpy ride around your land.

-Travisty