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Unread 04-17-2019, 10:26 AM   #1
Not Yet Wild
 
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Default G1 won't fire, dry plug

Hey all, new to the forum but not new to the business end of a wrench.

I have a G1 2 stroker that won't run. The carb appears to be clean, fuel/air mixture screw in good shape and backed off 1.5 turns from snug. It tries to fire but seems starved of fuel, if I choke it and let off it runs for a few seconds then goes back to a pop here and there.

The plug is dry, so it isn't flooded, and I really think it's starved of fuel.

Any suggestions on what to check next? I plan on pulling the carb to make darn sure a jet isn't plugged. I do know the fuel pump is working and the fuel is making it to the carb. I also pumped off over 4 gallons of some nicely varnished fuel and have clean new fuel in it.

Thanks in advance for the help.
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Unread 04-17-2019, 10:34 AM   #2
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Default Re: G1 won't fire, dry plug

Quote:
Originally Posted by HookSet View Post
I also pumped off over 4 gallons of some nicely varnished fuel and have clean new fuel in it.
I think this pretty much sums it up.

Pull the carb and clean it really really well. Blow out every passage you can find with compressed air afterwards. I'd also replace the fuel lines and filter(s) to make sure that there's nothing left over that will blow gunk into your newly cleaned carb.

It may be a hassle, but if all you did was pump out the old gas and pour in fresh, remove the tank, dump anything that's in it, and clean out the tank really well. I can guarantee there's still nasty gunk down in the bottom that wasn't pumped out. The only way to get it out is to pull the tank and clean it. I use a bottle of TSP and plain old water. Maybe drop a length of chain in there and shake it really well to agitate the goop at the bottom, the TSP will eat it up. Then dump it out, rinse it, and then I just let the hose run inside the tank for a half hour or so to flush out anything else in there. then just dump it, let it dry in the sun for a few hours and should be good to go.

Are you running premix or using the oil injection? If using the oil injection, I would block it off and remove it, and just run premix. The only time you find out the oil injection pump quit working is when the engine fails due to no oil. not usually much notice otherwise.
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Unread 04-17-2019, 12:54 PM   #3
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Default Re: G1 won't fire, dry plug

Thanks! I will do that later, as I don't have time during the week.

On the Oil injection side, what premix ratio do you use/recommend?
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Unread 04-17-2019, 02:38 PM   #4
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Default Re: G1 won't fire, dry plug

Also, bad crank seals will cause bad lean condition (which will eventually burn up the motor). Whats your compression?
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Unread Yesterday, 11:01 AM   #5
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Default Re: G1 won't fire, dry plug

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Originally Posted by cgtech View Post
Also, bad crank seals will cause bad lean condition (which will eventually burn up the motor). Whats your compression?
Compression is 120psi. I think I'm good to go on that side. There is oil on the side of the engine, I'll start with the lines and then go to the seals if that doesn't fix it.

Thanks for the help!
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