- Thu Feb 28, 2013 9:18 am
#22849
Hi guys---------- LEON, I had the same thing with my GL1000 Goldwing after mis-fitting new points--- and it was inside the garage as well !!! More ringing in my ears than a BT demonstration day !!!! Hello JAFFA,------ The term "Back-fire" I think is generally understood to be a single, VERY loud "BANG" from the exhaust pipe....sometimes, depending on the actual cause, this may be several and intermittent VERY loud "BANGS" from the exhaust---maybe enough to blow the pipe off the cylinder head....A "mis-fire" is generally when the engine is running smoothlu and ok but every now & then the regularity is interrupted by literally a MISSED FIRING..... A "Spit-Back" is again literally just that, but there is more of a "POP" this time at the Carb / inlet mouth and usually with a trace of white gas/smoke....Normally occurs when cold starting and not enough choke has been applied--but not always the case.....A "Kick back" ??, OK, well remember that the ignition is always set to happen before the piston gets to Top Dead Centre. So-- as you spin the flywheels over, the piston rises and the plug ignites the fuel/air mix. --if the rotation speed is NOT fast enough to carry the piston over TDC then the ignited gasses will push the piston and flywheels BACKWARDS and, if the kickstarter is still engaged, it will try and lift you into orbit !! .... Please remember that}--- Fuel type, Air filtration, Carb type & settings, ignition settings, Combustion chamber details, cam type and timings, exhaust type, silencer type---even cooling system and lubrication have an effect on an engines performance and are all interlinked..... Don't you just LOVE manual diagnostics ??------- I think that's right ?? I'm sure others will help out as well..............PS }-- We're not WIND-UP merchants on here but there will be the inevitable bit of Banter !!
