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  #1  
Old 10-12-2015, 04:06 AM
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BEEFKING69 BEEFKING69 is offline
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Default Gy6 labor knocking

Ok so i rejetted my crossfire since its been getting colder and now its started randomly labor knocking? Went from a 130 main to 135.
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Old 10-12-2015, 07:36 AM
liduno liduno is offline
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Tried a higher octane fuel?
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Old 10-12-2015, 08:14 AM
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Im going too but if it was gonna labor knock it should have done it ever since it was rebuilt and running leaner.

Here is the list of mods...

Crossfire 150
Uni filter
Some sota ebay glasspack style muffler off a buggy at the junkyard
60mm jug with HC piston
Big port head with SS valves and titanium springs
A-12 cam
135 main
38 pilot
12g sliders
yellow clutch springs
yellow contra
custom oil cooler
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Old 10-12-2015, 10:46 AM
scjeep4.7HO scjeep4.7HO is offline
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Is it actually getting enough fuel though? Might still be lean from other reasons.

Last edited by scjeep4.7HO; 10-12-2015 at 10:46 AM. Reason: changed word.
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  #5  
Old 10-12-2015, 08:26 PM
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jmansracerocket jmansracerocket is offline
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try going back down to the 130, the 135 might be to big
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Hammer head Single seater know as herbie
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Aluminum fuel tank, aluminum wheels, custom fuel/cargo rack, entire rewire, trail tech vapor, ported big valve head, a12camshaft, 12 gram sliders, straight intake, kirkey wide seat, front end extension. 4 point harness, welded cage. Hammerhead exhaust.



Blade Single Seater Restore
welded cage, engine build, new wiring harness/electric box, spun aluminum fuel tank.
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  #6  
Old 10-12-2015, 11:35 PM
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BEEFKING69 BEEFKING69 is offline
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ill try the 130 again just to make sure the knock goes away.....it should be getting plenty....its got a big riding mower tank with 1/4in lines and a big clear glass filter.
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Old 10-13-2015, 05:27 PM
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muffler may be the prob.
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Old 10-14-2015, 01:19 AM
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same muffler ive had on it for months.....that whole list of stuff was done a few months ago and its been running like a top till the weather changed
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Old 11-10-2015, 08:32 PM
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BEEFKING69 BEEFKING69 is offline
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Update....93 octane gas has seemed to fix the issue.....and ive acquired a rare and mythical factory 26mm cv carb off a 75 buck carter brothers 150cc buggy
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