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Dirt Bike Discussions By Brand
Suzuki MX & Off-Road Dirt Bikes
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[QUOTE="_JOE_, post: 1402913, member: 77507"] Detonation is caused by insufficient fuel grade. Compression is the main determining factor here. Higher compression requires higher octane fuel. This can be heard while under load and on the throttle. A lean engine will usually surge and the plugs will be really light colored. It sounds like you need to forget the 100 bucks you wasted with that guy and get yourself a bag of jets and some tools. Get a pilot jet 1 size up and 1 size down from stock and a couple mains either way. Plan on spending an afternoon tinkering. Find a place to ride on firm ground, not that sugar sand, and follow the guide in this link...... [url]http://www.dirtrider.net/forums3/showthread.php?p=1340315#post1340315[/url] Also make sure the float closes the needle valve when the arm is parallel with the carb, you'll need to pop the bowl off for this. And don't get too caught up on the different needles, just pick one and play with the clip position. Once you get the rest of the carb sorted out you can fine tune the midrange with different needles. I had an 02 and everyone said it was the worst bike ever to jet. It liked airscrew adjustments but ran fairly constantly on the needle and main through most temps. And you might want to make sure the petcock filter and tank vent are clear befor you start too. It might sound like alot of work but it'll go quickly and you'll have a much better understanding of how the bike works. Not to mention that good feeling you get when your buddy comes riding that fancy thumper with you and his pro tuned carb won't get the bike running or it pops and spits all the time..... :) [/QUOTE]
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Dirt Bike Discussions By Brand
Suzuki MX & Off-Road Dirt Bikes
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