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1994 gtx back fires

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  • 1994 gtx back fires

    Ok I'll start with some history, I bought the ski last year and it didn't run right. Was told a bolt went through the intake and hit the rotary valve. Found the brass gear on the shaft broke, replaced the shaft and ski ran good for about a month or so. Then it would bog up high( it would never plain on the water). But it would rev to the limiter out of the water. Started to read stuff and figured it'd change out the grey fuel lines and rebuild the carbs and change the fuel selector. Installed the lines and selector, then rebuilt the carbs, sent the pop of pressure to about 22-23 psi witch is on the low side of spec. Put it in the water and it bogged at first then reved like it should and had a surge at full throttle. Tired to change plugs and adjust carbs and no change. Then another day I went to mess with it and now all I get is back firing. Any help will be appreciated thanks.
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