poornebbing Posted August 9, 2009 Report Share Posted August 9, 2009 hello there i have just bought a really tidy and original 240 from germany unfortunately as the engine warms up the top end develops a really loud knock and i dont know what the problem is can anyone help? also she wont return to tickover very quickly and tickover speeds up when hot?? Quote Link to comment Share on other sites More sharing options...
htrdoug Posted August 20, 2009 Report Share Posted August 20, 2009 hello there i have just bought a really tidy and original 240 from germany unfortunately as the engine warms up the top end develops a really loud knock and i dont know what the problem is can anyone help? also she wont return to tickover very quickly and tickover speeds up when hot?? Air leak causing a severe detonation(Pinging,Pinking) Can sound like a metal to metal knock when really bad,think big Diesel truck type noise.Best to do a pressure test.The Idle issues are a clue.If it passes a pressure test it's possible the ignition has gone wonky and timing is advancing.be careful 'cause it can go into runaway,I had a 440 Maico do that to me while it was loaded into the back of my pickup truck,yanked the plug wire,still screaming away,jammed it into gear,just started doing a burnout in the truck bed,didn't get it shutdown until I had shifted up into high gear and stood on the rear brake pedal... Quote Link to comment Share on other sites More sharing options...
poornebbing Posted August 26, 2009 Author Report Share Posted August 26, 2009 thanks htrdoug ,but can you tell me how to check the timing on a 240 fantic,can i use a lamp or is it static timing only? Quote Link to comment Share on other sites More sharing options...
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