Exhaust Smoke coming out the inlet?

[The V8 Files]

CVH has hydraulic lifters I believe, if its been sat it might just need to run for a while at full temp.

[TheArf]

Did you have the head to bits when you did the head gasket, cos I do tend to agree with Phil that it does sound like poor seating valves


Arfon

[brainbug007]

Nope I only renewed the gaskets and gave it a good clean. If it is the valve causing the problem, will it need completely replaced or just adjusting the clearance sort it?

[Talonmotorsport]

Take the head off and give it a quick clean, turn it upside down so it's head gasket side up and pour a little petrol in the combustion camber. If the valves or seats are worn the petrol will seep through to the inlet/out ports. If there is only minor pitting just use course then fine grinding paste and a valve stick. If you've taken the head off then I personally would replace the tappets and valve seals while I'm at it.

[snapper]

At this early stage and without cooling the only thing you can do is take off the rocker cover and rotate the engine by hand and see if the lifter is slow returning after being compressed.
A compression test will show if your valves arnt sealing
Hydraulic lifters are renowned for building pressure slowly after sitting for a long time

[twinturbo]

if the lifters were not full the valves would be less open.

it may just be a sticky valve.

TT

[snapper]

If the lifters are slow returning then valves would not close

[twinturbo]

They don't return.

They fill with oil and expand to fill the gap between the rocker and cam and move in the follower bore. Once full they stay full unless faulty.

TT