neversaydie Posted August 30, 2014 Share Posted August 30, 2014 Bit of late summer maintenance work today, checking over stuff as you do. Plugs 1 and 4 look to be running a little rich, 2 and 3 are fine, bikes running good If my understanding is correct, is this the air adjustment screw? If it is (and both heads look mullered), is it in or out to weaken? Thanks Link to comment Share on other sites More sharing options...
Moderator drewpy Posted August 30, 2014 Moderator Share Posted August 30, 2014 in to weaken. fuel screws between carb and engine, air screws air box and carb. I'd err on the side of being rich as todays fuel is so bad now Link to comment Share on other sites More sharing options...
Moderator Airhead Posted August 30, 2014 Moderator Share Posted August 30, 2014 in to weaken. fuel screws between carb and engine, air screws air box and carb. I'd err on the side of being rich as todays fuel is so bad now yeh but my TTR is different, its an air screw between carb and engine! Link to comment Share on other sites More sharing options...
Moderator Cynic Posted August 31, 2014 Moderator Share Posted August 31, 2014 If its running well leave it alone. Change out the plugs and check after another 500 miles. The plug differences are prob down to different temperatures. 1 and 4 may not burn so completely cos they run cooler than 2 and 3. They may get less air at your normal riding rpm. When my 600 was tuned they had completely different settings for the middle 2 carbs, even the needles were different. So stock bikes will always show a difference. Sign of running well to be honest. Think about it. It is nigh impossible for cyl 1 and 4 to be out by the same amount. Link to comment Share on other sites More sharing options...
neversaydie Posted September 1, 2014 Author Share Posted September 1, 2014 Thanks chaps I did wonder if the difference was related to being the outer two cylinders, the other possibility was an intermittent coil firing from coil 1/4 but I discounted that as the bikes running well As the screw heads show signs of previous attacks, and there will be no improved performance, I'm gonna leave them alone Link to comment Share on other sites More sharing options...
Moderator Cynic Posted September 2, 2014 Moderator Share Posted September 2, 2014 Arent the coils 1-3 and 2-4 Link to comment Share on other sites More sharing options...
slice Posted September 2, 2014 Share Posted September 2, 2014 Yeah my coils run 1-3 2-4. Link to comment Share on other sites More sharing options...
neversaydie Posted September 2, 2014 Author Share Posted September 2, 2014 Arent the coils 1-3 and 2-4 Nope Link to comment Share on other sites More sharing options...
neversaydie Posted September 2, 2014 Author Share Posted September 2, 2014 Yeah my coils run 1-3 2-4. Mine don't Link to comment Share on other sites More sharing options...
Moderator Cynic Posted September 3, 2014 Moderator Share Posted September 3, 2014 Ok Link to comment Share on other sites More sharing options...
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