Got my car back from the body shop this morning, and just plumbed the throttles back in again. It starts up running like a bag of s h i t and something metalic is knocking in the inlet side, kinda like a washer bouncing around in the combustion chamber. I let the car get up to temperature and its still ruff. So i jab the throttle and something shoots out number 4 trumpet, didnt see where it went but it was like a redy black lump of something, the car sounds like a tractor and theres pressure blowing back out trumpet 4 when you rev the engine. If you stick your hand over the trumpet you can feel a pulse, whereas the rest your hand just gets sucked in and the engine labours.
It sounds, in principal, like a dropped valve. which would confirm the lumpy running and fuel and air reverting back up the inlet tracts and into the atmosphere. to be honest ive had either number 7 or 8 inlet valve sticking before, so i guess where the engines stood for a couple of weeks the lack of oil has killed whatever was happening intermittently before.
I'm guessing the lump of crap was a chunk of valve guide or something. this is the same valves that were damaged on the cambelt slippage incident a while ago. i replaced and checked most parts, but something obviously werent right.
Heads coming off on monday