rev4t Posted August 10, 2009 Report Share Posted August 10, 2009 can anybody help . i have a rev4t 08 . thats bad to start, fouling plug up , and struggles to rev clean. i have .......... re jetted carb,re set valves, had stator re wound, thouroughly cleaned out all carb and choke jets,new plugs, clean air filter, altered air screw , breather pipes clean Quote Link to comment Share on other sites More sharing options...
shercoman2k8 Posted August 10, 2009 Report Share Posted August 10, 2009 Tryed clearing out the exhaust? Quote Link to comment Share on other sites More sharing options...
rev4t Posted August 10, 2009 Author Report Share Posted August 10, 2009 not tried clening out exhaust. but would this be making bike bad to start etc Quote Link to comment Share on other sites More sharing options...
stork955 Posted August 10, 2009 Report Share Posted August 10, 2009 Gday, not really on a 4 stroke. What heat range plug are you using? What does the plug look like when it is fouled - is it wet looking? Or is it a dry soot? This makes a difference in diagnosis, wet is oil and dry is fuel. Cheers, Stork Quote Link to comment Share on other sites More sharing options...
nzralphy Posted August 11, 2009 Report Share Posted August 11, 2009 (edited) Hi. My Rev 4T has a very sooty plug. I am running a Iridium plug with 0.6mm gap. It starts and runs fine - one slow kick and it is running. Have you replaced the problematic Beta kill button? They are ****e, replace it. Check you have a good earth to the frame for the ignition system ... this has fixed a few of these bikes starting problems. Jetting is critical - Raise the needle all the way, replace the main jet with #112.5, and idle mix set 3.5-4 turns out. Ralph Edited August 11, 2009 by NZRalphy Quote Link to comment Share on other sites More sharing options...
sparky Posted August 11, 2009 Report Share Posted August 11, 2009 What make and number Iridium plug do you use? Quote Link to comment Share on other sites More sharing options...
nzralphy Posted August 13, 2009 Report Share Posted August 13, 2009 It is an NGK CR7EIX Quote Link to comment Share on other sites More sharing options...
sparky Posted August 14, 2009 Report Share Posted August 14, 2009 Thank you Quote Link to comment Share on other sites More sharing options...
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