Inlet Manifold Coolant Leak

[Telf 224 2 Cars]

Hi all,

 

After my epic over fuel thread I've found that post rebuild my inlet manifold is dripping coolant.

 

I've stripped it off today and re-cleaned both mating faces and cleaned the gasket to ensure there is no grit etc fouling the surfaces.

 

Rebuilt again and tightened the nuts to the point I was worried I might shear them- took it for a run- still leaking.

 

I seem to remember seeing similar posts - and something about blocking the holes in the engine casting to negate this issue entirely

 

As always any help greatfully received.

 

Paul

[Tom Fenton 1,542]

"Cleaned the gasket" - they are only any good once, a new one would probably cure your problem.

I have blocked them off but usually only on turbo engines which are putting upwards of 1 bar pressure onto the gasket joint. On a standard engine it shouldn't really be needed. But easy enough to do, tap the holes and thread lock a grub screw in each.

[Telf 224 2 Cars]

hi tom,

 

I used a smear of hylomar sealant in the end with a new gasket cos it still leaked - a bit of surface pitting causing it i think

 

Cheers

[TAG 25 1 Cars]

M8 grub screw in the coolant holes works nicely!

[Telf 224 2 Cars]

Tom,

 

I did consider that as a solution if i couldnt stop the leak. All ok now but thanks anyways