SPLUTTERING TS1

[Woodsy12]

I have just built my MB TS1 225 (stage 2 tuned) engine, Yamaha reed block from MB, Dev tour exhaust, PHBH carb pre jetted by MB for running in. It starts well, ticks over but as soon as I drive it it splutters really badly off the throttle and from then on and it doesn't really clear. I have tried air mixture, smaller pilot jets, needle clip adjustment, NOTHING makes any difference. Has anyone with a bit more experience than me had this problem or recognise the symptoms. Is there something else I should be checking. I know that the head and base of cylinder have no leaks but black unburned oily shite is coming out of my exhaust in spades. I'M STUCK!

[tarmac tickler]

check the readings from the stator mate, seems like your pick or coil is on the blink , in fact i will have a quid on it that is the problem..

[Woodsy12]

Cheers, I am running an Indian electronic until my new 'Ultimate' variotronic kit arrives on 10 week back order from italy. It is a year old and I wouldn't be surprised it it is dodgy, they look home made when new. What equipment do I need to 'take a reading' of the stator / coil?

[sean brady scooters]

check that your choke is working properly...ie ,shutting off and closing .

[Woodsy12]

Cheers, the choke piston does fully open and close but whether open or closed, the engine still splutters.

[sean brady scooters]

it could be a main seal prob,but without checking and eliminating a few other things first ,its debatable...
do you know what atomiser /diffuser you have in your carb...?
i only mention this as often they are supplied on the very rich side for running in purposes...

[Woodsy12]

Atomiser is an AU266

[Woodsy12]

Ref main seal problem, I really hope not, it is a brand new crank from Cam Lam with new seals and bearings, all lightly oiled before assembly.

[sean brady scooters]

put your spectacles on matey...i,m pretty sure that would be AV 266

[Woodsy12]

You're right, AV266, it is Broadhurst's scribble on the carb box.