At the end of last year I set the carbs up for the IVA, and got:
CO=0.041 %
HC=00017 ppm
Lambda= 1.01
Thought that I had better recheck for looming IVA, and it's running like a bag of nails
It's fine at natural idle, but a nightmare at 2500 idle check. CO and HC are fine, but the lambda is all over the place.
It's virtually impossible to hold at 2500-3000rpm on the pedal, so I made a clip to hold the cable at 2750, and it will not hold a steady speed.
It goes to around 3100 then drops to 2200 running very rough, picks up again to 2750, lambda Ok for about 5 seconds, and repeat.
I fitted carb overhaul kits (HOW MUCH) last year and as said it was fine. I drained the fuel before putting to bed, and filled with fresh fuel last
week. Any ideas welcome.
dave_424 - 23/4/13 at 01:07 PM
Carb balance? not sure how it would change from just sitting there but stranger things have happened. Very simple to make yourself a carb balancer
that is incredibly sensitive and accurate using some vacuum line and two bottles.
Dave
Peteff - 23/4/13 at 02:52 PM
Strip the carbs and clean the primaries, they always seem to clog up when standing even empty.
40inches - 23/4/13 at 03:36 PM
Stripping the carbs seems the way to go. Have checked fuel levels, and carb balance is spot on.
40inches - 30/4/13 at 02:08 PM
Yep! one pilot jet blocked, along with the gallery drilling's on another carb.
Took it for a pre IVA MOT today and it passed emissions
) last year and as said it was fine. I drained the fuel before putting to bed, and filled with fresh fuel last
week. Any ideas welcome.