Air leak help (solved)

[kawa js550]

Just redid the crank seals on my 61x and pressure tested the motor and it still has a small leak. When I pressure tested it before, it was leaking from the rear seal bad, so thats why I replaced them. I sprayed down the engine multiple times with soapy water and there is no sign of a leak. The plugs are tight and so is the pulse line. The only thing I could think of was the oring on my ada head was leaking and going into the water jacket becuase there are no visible leaks with soapy water. I pulled the head off and the oring looks fine but it is old. Any idea? I would swap another head on but I dont have a head gasket.

 

[mikidymac]

Make a bubble of soap over the water outlet fittings so you can see if it's leaking through the coolant path.

 

[kawa js550]

Make a bubble of soap over the water outlet fittings so you can see if it's leaking through the coolant path.

Tried your method but seemed to have no luck. I put a thin layer of 1211 on the exhaust manifold gasket and intake manifold gaskets and resprayed the motor down with soapy water and getting the same results. I still have a suspicion that its the head o ring though. I think I might try and use silicone with the oring and see if I still get a leak. Either way ill just replace the orings.

 

[Harbor]

How much leak/pressure drop in 10 minutes is it ?

 

[kawa js550]

In 10 min it dropped like 3 or 4 psi from 8. I finally found the leak after searching all day. The intake manifold has a leak on the back side in the middle. Must of not gotten the soapy water far enough in there.

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[jetx]

good job figuring it out

 

[mikidymac]

Mine leaked in the exact same place. So frustrating so 1211 and life is good.