running fault on cu 2ltr

[daz1973]

took my friend home today from work and noticed it felt / sounded as if was running on 3 cylinders . After about 10/15 mins into journey started misfiring ,back firing , lack of power , stalled at light's ,then next set of lights STALLED again ! So went into engine bay and thought it could be t-piece servo for carb balance , a bit mushy and knacked.
Any way limped home and have ordered crappy t-piece for 5 quid etc.
Is there anything else i should checked tomorrow.
Thanks Daz

[BOXY]

The elbow on the other end of the balance pipe (right hand carb).

[81AirCooled]

The elbow like Boxy said. When mine popped off I had to really keep the revs up to stop it stalling , not easy with an automatic

[daz1973]

had checked that ,looked ok will take it off and check for splits.

[BOXY]

Check the fuel filter on the tank outlet as well. Fuel starvation might be causing a weak mixture rather than an air leak.

[daz1973]

Put new fuel filter in , as the other one is full of "pooh" rusty coloured dust ,still runs crap .so thinking petrol tank is shafted .
will wait for my new parts to come fit them and if that dont work take the the tanks off and clean .
I will also check fuel pump rod . Anything elese anyone can think of !

[81AirCooled]

Check the brake servo hose on to the left of the LH carb for air leaks, also around the carbs themselves. I think the leak would have to be pretty major for such erratic performance. If the fuel filter is filthy you´re probably on the right track anyway.

[BOXY]

I think there's a filter built into the pump. If the inline filter has fallen to pieces crap might have made it that far.

[daz1973]

Ok problem sorted , MASSIVE AIRLEAK see pic

So there we have it the little plug had popped out! looks like some one had it out before ,so popped it back in and sealed it up it wont be coming off for now , will get carb rebuild kit so i can take off carbs to fix it good!
THanks for the help people