Ever heard of leave well alone. Well I pulled my inlet manifold and sent it off to an engine reconditioner to clean with instructions to remove the coolant plug and the brake check value. Both are shown below.
You can see that for the coolant plug/tap/adaptor thingy the thread has fused with the inlet manifold and while most of the thread inside the manifold is ok the thread on the little plug/tap is not. Does anyone know where I might get a replacement for this.
I also wondered about the brake check valve shown above. My understanding is that this should suck vacume from the Number 4 cylinder and therefore air should only be able to travel one way through it. However I can suck air through it easily but I can also blow air through it too (although in a less restricted way). That is, I would be able to blow air through the check valve into number 4 cyclinder. Is this correct or is my check valve broken also.

You can see that for the coolant plug/tap/adaptor thingy the thread has fused with the inlet manifold and while most of the thread inside the manifold is ok the thread on the little plug/tap is not. Does anyone know where I might get a replacement for this.
I also wondered about the brake check valve shown above. My understanding is that this should suck vacume from the Number 4 cylinder and therefore air should only be able to travel one way through it. However I can suck air through it easily but I can also blow air through it too (although in a less restricted way). That is, I would be able to blow air through the check valve into number 4 cyclinder. Is this correct or is my check valve broken also.
