boode

Yes by plate i ment timing cover lol thanks for the advice

Yes

Good to know, all valves look good and sit correctly, flatness was checked with some digital machine by mechanic as well as my own straight edge by myself as i removed head myself and had him replace it as i didn't have correct tools to replace.

When turned over you get the regular gur gur as you put it but as i said every 4th gur is a loud sucking sound. I will take the plate off and have a look at the timing chain today and see if anything is out of line....just getting annoying now as ive took this head off 3 times now and the engine is very close to being sledge hammered in my fits of rage. Had a day off to calm down.

Head and block both flat before replaced. valve clearance checked and tappets in correct cold clearance in accordance with the book. I didn't watch the guy replace the head so can't comment on crows foot. But I've ordered one myself and am going to redo work in the next week as im sending head off to replace all valves just incase.

So we've recently had the head gasket replaced and all was fine but now engine won't start and we have a loud sucking noise every 4th stroke coming from the air intake when we try to start....any ideas?