Posts Tagged ‘ Needle Jet ’

April 20th, 2012

Ask the Editors: Zook With a Case of the Ping Pings

Dear ATVC: I have a 1987 Suzuki Quadracer 250 that pings every time I crack the throttle. It has a fresh top end but is still stock spec. The only other mods are a pipe and vented airbox lid. Any ideas? Pinging is actually the result of pre-ignition of the fuel in your engine’s top [...]

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