Peter Wade Posted September 9, 2022 Report Share Posted September 9, 2022 Hi All, After refurbishment of my carburettas HS6 on my TR4A I'm getting a small backfire/pop, I've been told it's unspent fuel?, can anyone tell me what this is and away forward, is this a float problem? or a plug problem. Regards Peter Quote Link to post Share on other sites
Ralph Whitaker Posted September 12, 2022 Report Share Posted September 12, 2022 Possibly too rich on overun, could be float levels a bit high or jet adjuster needs taking up a flat or two. Could also be ignition timing I guess. Ralph Quote Link to post Share on other sites
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