Valve/lifter problems.

[Toms306]

Yeh uve got a valve just stuck open a tad, u can hear it dropping comp on one cylinder..

Tom it wont hit the valve, would only do that if the valve was stuck entire way open, but theres no timing issue, so even if it did it would just push the valve home, not bend it.

Ah ok, that makes sense - I was thinking that if the lifter has stuck the valve down, it won't lift again as the cam moves, but I see your point that it'll just push back into place

Take a look at how the HDi roller rocker works, you can't jam a valve down with a lifter, that's partially the issue with them, the roller rocker essentially disconnects the lifter from the valve top... That's why under high exhaust mani pressure the roller rocker can essentially fall out... That's precisely what was happening on Warlords engine when he shat the roller rockers!

I haven't seen a naked HDi tbh lol, just going on theory from my brain and what I saw from the PD (bad, I know!) and it must be a different setup then.

Also, I didn't realise you could run without the rocker cover (as it was suggested to me on the PD and I basically said 'err, no, there'll be oil everywhere!') which now seems Im wrong......so Jonny, if you do it again, could you take a vid, I'd be interested to see what actually happens lol.