Oil in exhaust
Posted: Wed Apr 12, 2023 10:54 am
Hi
I recently had my cylinder head guides, seats, valves and springs replaced. All of the work including the machining was carried out by Vulcan Engineering near Brands Hatch. They pressure tested the head before commencing any work and the head was given a clean bill of health. The standard of workmanship is excellent and I am very happy with the result.
I refitted the head to the block the internals of which have covered probably less than 100 miles.
Initially the engine ran well but on starting it up last week it ran rough and there was a lot of smoke coming from the exhaust, light grey/blue in colour. On inspection I noticed black oil running down the block on the exhaust side by the rear face of the block. I suspected that despite my careful assembly the head gasket had failed. So I removed the head. All looks OK, the gasket shows no sign of damage, both the head and block face are are good. There is no evidence of leakage in the ports. No 4 piston had oil in the cutouts.
I think I know what the problem is but I would like some opinions from others before I start tearing things apart.
Thanks
John
I recently had my cylinder head guides, seats, valves and springs replaced. All of the work including the machining was carried out by Vulcan Engineering near Brands Hatch. They pressure tested the head before commencing any work and the head was given a clean bill of health. The standard of workmanship is excellent and I am very happy with the result.
I refitted the head to the block the internals of which have covered probably less than 100 miles.
Initially the engine ran well but on starting it up last week it ran rough and there was a lot of smoke coming from the exhaust, light grey/blue in colour. On inspection I noticed black oil running down the block on the exhaust side by the rear face of the block. I suspected that despite my careful assembly the head gasket had failed. So I removed the head. All looks OK, the gasket shows no sign of damage, both the head and block face are are good. There is no evidence of leakage in the ports. No 4 piston had oil in the cutouts.
I think I know what the problem is but I would like some opinions from others before I start tearing things apart.
Thanks
John