Inlet manifold leak

[triggermala]

I have discovered a leak around the manifold to head gasket. I sprayed soapy water around it and it starts making bubbles. It seems to be blowing air not sucking in . I've also tried it with carb cleaner but made no difference in the revs of the engine. Is this an intake valve leak and how do I find and fix it. 2ltr cu petrol Aircooled with twin dell's.

[Rosie n' Jim]

Was the engine cold? I suspect the water was boiling? If you had pressure there it wouldn't run and you would not have any servo brake assistance. 

[triggermala]

Thanks, I think the engine had been running so hot possibly.

[davidoft1]

Having seen the facebook video I think that you have air bubbles from the heat expanding, if there’s no change of engine speed with carb cleaner there’s no leak , what fault are you attempting to diagnose?

[triggermala]

Popping, misfire noise, seems more on deceleration. Sounds more like underneath.

[triggermala]

Just a thought, if there was a leak around the gasket but the air was blowing out instead of sucking in would the engine sound different.

[triggermala]

Just repeated the test with cold engine and still the same amount of bubbles.