Simon TDM850 Posted March 15, 2021 Share Posted March 15, 2021 I have a 1992 TDM 850, a bit of a wreck that I want to get running and perhaps customise. I have got it to fire but it is very hit and miss, will fire better if I take both plugs out and clean them. After I have attempted to start for a few turns if I take the plugs our and test them against the head they wont fire, or there is a rouge spark; so to the body of the plug. cleaned they then spark properly, put them back in and it may fire again. when it does fire it is back firing and poping and banging. Is this most likely timing or fuel/air carbs or electrical where do I start? Thanks Link to comment Share on other sites More sharing options...
Moderator drewpy Posted March 16, 2021 Moderator Share Posted March 16, 2021 could be anything, emulsion tubes wear in the carbs, coil leads break down on these bikes. tried new (non copy) spark plugs? Link to comment Share on other sites More sharing options...
Simon TDM850 Posted March 16, 2021 Author Share Posted March 16, 2021 Thanks for the replay I'll start to have a look at the things you've suggested. Link to comment Share on other sites More sharing options...
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