Briggs and Stratton V twin engine.

[fleehillfarm]

adw when you say a leak down test is that a compression test on each cylinder? If so I think I can buy one that screws into the plug holes for about 25 quid. I removed the breather pipe completely and the plugs are still getting oily. I was wrong when I said black smoke coming from the exhaust it is actually grey smoke. I've just taken the carburettor off for the fourth time and will clean it again. while it's off I can have a look at the crankcase breather. Thanks for all the help.

 

[adw]

Yes, an engine leak down tester connects to a compressor, once screwed into the spark plug hole , and the engine at tdc compression stroke, press the trigger and air is regulated into the cylinder, this will check valves seating, excessive ring wear etc. the engine breather is just a valve which allows pressure out and vacuum in. Also look at the engine oil, does it smell of petrol?