Quote:
Originally Posted by nate3132
Had a stuck intake valve causing my cub to back fire through the carb. I mean literal fire like almost burnt my cub up haha right. Well i took the carb off cleaned it, took the head off sprayed in some pb blaster worked the valve up and down, reassembled everything and now she is running super good. Just thought i'd share the story and bout the pb freeing up that valve.
P.S. still have that 50 in. deck if any wants trade a 44 or 38 for it.
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Keep an eye on it so to speak, as the problem will usually come back.
The only real fix is remove the valve, clean the stem and the guide.
It's also a great time to remove the carbon on the piston/head.
No lead gas causes the lack of lube to the stem.