carb mix

Post by **snarl** » 25 May 2006, 18:21

I've been messing with my carbs (mixture screws ) cus it was backfiring `!! turned out to be distrubator cap ..now my mix is wrong , does anyone know how to it get it right ..ie turn all the way till tight then unscrew certain amount of times ??? perhaps help it not happy t25 Aircooled by the way

Post by **trickydicky** » 25 May 2006, 18:27

Gas tester is all I can think of

If have a chat with a local garage they will fiddle with your screws for you, It 's not a big job but you just need a gas tester, I have used the "colour tune" things in the past though ("Halfwits have them") but it wont get you to M.O.T. spec.

Post by **Hacksawbob** » 25 May 2006, 19:57

dual carbs want balancing aswell.

Post by **alden1957** » 25 May 2006, 21:24

Throttle mixture screws at bottom on both carbs...screw in till stop then out 2 1/2 turns..remove connection wire on rear solenoid on left carb and screw in the mixture screws on both carbs equally until the engine slows down...reconnect solenoid and then adjust mixture and idle speed using the top screws on left carb..use gas analyser if you have one..
Good luck..