Today after its wintersleep I started my cosworth for the first time in 7 months. It started fine, ran fine at cold idle and I waited untill it ran in closed loop mode.

When ran in closed loop mode I notice a little hassitaton. When giving it some more revs I could hear it began to run on 3 cylinders so I stopped the motor from running.

I then inspected the spark plugs and found number 3 was wet of fuel. Change this spark plug and i ran ok at idle. So I took a short drive through the neighbourhood for about 5 minutes without problems. Than at return at my home it started to smoke badly and again run on 3 cylinders. Right away inspected number 3 and it was wet again!

Clean the spark plug, started it without spark plug and no injection to clear the fuel that was left behind. Than after putting the plug back in it ran ok.

So I took a bit longer run. First minutes all went fine, but after 10 minutes its started to run on 3 cylinders again. Tried to solve it at the hard shoulder but the spark plug on cylinder 3 immediatelly kept being wet after restarting the engine.

So a tow at home it was..

Arriving at home I thought I might just get it started and quickly get on 3 cylinders in my garage. But at that point it started fine so I could get it in without a problem. Left it for 1 minute at idle and also no problem.

So I am very confused where to look for.

I think maybe it could be a bad distributor cap or an injector that is leaking.
It runs L8, 55's and a MSD 380bhp chip.

I hope you guys can give me some useful tips.
Thanks in advance.