Yamaha G2 Exhaust Pushrod keeps popping out of place

Redparrott727 · 07-12-2013, 04:34 PM

Hi, I have a yamaha g2 and the exhaust pushrod keeps popping out of place, would anyone have a guess of what to repair on it?

smallblock450sl · 07-12-2013, 06:56 PM

Quote:

Originally Posted by Redparrott727

Hi, I have a yamaha g2 and the exhaust pushrod keeps popping out of place, would anyone have a guess of what to repair on it?

I would guess the exhaust valve is "sticking" due to carbon build up. Head removal can be done with the engine in the car, but you will need a new head gasket and valve cover gasket. If you need help, just ask.

Redparrott727 · 07-13-2013, 11:45 AM

Okay I will look into doing that, Would you happen to know if there is anything internally that could break causing this?

Mike Mac · 07-13-2013, 11:30 PM

Before you pull the head, do you know for sure that the valve lash is set at .004?

sho305 · 07-14-2013, 12:11 PM

Could be a bad spring, damaged pushrod, or even valve (or carbon like posted). But if you take the head off and check it all out you will get it fixed, that is what I would do. Not hard job to do maybe 15-20 minutes. Can clean it all up and inspect, then you know its good to go. I think all you do basically (by memory) is pull muffler (2 bolts, 2 nuts), pull carb away from head, remove shrouds on head (maybe hardest part getting at bolts), remove rocker cover and then head.

07-12-2013, 04:34 PM	#1
Redparrott727 Not Yet Wild Join Date: Jun 2010 Posts: 5	Yamaha G2 Exhaust Pushrod keeps popping out of place Hi, I have a yamaha g2 and the exhaust pushrod keeps popping out of place, would anyone have a guess of what to repair on it?
Redparrott727 Not Yet Wild Join Date: Jun 2010 Posts: 5

07-13-2013, 11:45 AM	#3
Redparrott727 Not Yet Wild Join Date: Jun 2010 Posts: 5	Re: Yamaha G2 Exhaust Pushrod keeps popping out of place Okay I will look into doing that, Would you happen to know if there is anything internally that could break causing this?
Redparrott727 Not Yet Wild Join Date: Jun 2010 Posts: 5

07-13-2013, 11:30 PM	#4
Mike Mac G8 Specialist Join Date: Jun 2009 Location: Phoenix Posts: 7,799	Re: Yamaha G2 Exhaust Pushrod keeps popping out of place Before you pull the head, do you know for sure that the valve lash is set at .004?

07-14-2013, 12:11 PM	#5
sho305 Vegas modded 420 Join Date: Jun 2009 Location: West MI Posts: 15,443	Re: Yamaha G2 Exhaust Pushrod keeps popping out of place Could be a bad spring, damaged pushrod, or even valve (or carbon like posted). But if you take the head off and check it all out you will get it fixed, that is what I would do. Not hard job to do maybe 15-20 minutes. Can clean it all up and inspect, then you know its good to go. I think all you do basically (by memory) is pull muffler (2 bolts, 2 nuts), pull carb away from head, remove shrouds on head (maybe hardest part getting at bolts), remove rocker cover and then head.

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