29-11-2020, 10:14 AM
Good morning Howard,
I did wonder about valves. A while ago the engine was a bit sluggish so I checked the cylinder pressures and found one very low. The tappet nut was loose and caused the valve not to lift, so no air going in the cylinder to be compressed, hence the low reading.
A similar situation would make No. 3 cylinder short of air giving a false richness!
I took the manifold off to check for leaks and faced it off by a few thou on Friday, why didn’t I check the valves then
Today’s job = check cylinder pressures.
Roger
I did wonder about valves. A while ago the engine was a bit sluggish so I checked the cylinder pressures and found one very low. The tappet nut was loose and caused the valve not to lift, so no air going in the cylinder to be compressed, hence the low reading.
A similar situation would make No. 3 cylinder short of air giving a false richness!
I took the manifold off to check for leaks and faced it off by a few thou on Friday, why didn’t I check the valves then
Today’s job = check cylinder pressures.
Roger
Location:- Haverfordwest, Pembrokeshire.