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Posted

first off i know this quad isnt a banshee or a 2 stroke but wat can i say i need help anyways my friend buys an airbox eliminator for his trx 450 and he brings it over well ive tried all sorts of jets from 1 size over to 8 sizes over i tried the needle but its not adjustable i just tried the pilot jet a 3 size over and a 4 size over well wen i ride it its good from 0 to 3/4 but it bogs really bad as soon as u pass the 3/4 marko and it was also overflowing oil at the crank breather these 4 strokes are so complicated shit any help would be apreciated

Posted
it was also overflowing oil at the crank breather these 4 strokes are so complicated shit any help would be apreciated

 

either the tank is too full of oil or he is having serious blow by. might do a compression test or leak down.

 

what do the spark plugs look like. get it to bog at wot adn pull them. black rich, white lean, tan good.

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