4.3 V6 Engine water leaks in 3 cylinders

[eshelon]

This season i bought new manifolds for my 4.3 V6 engine and after instalation water leaks inside 3 cylinders and one on other side
Things i already checked:
manifold Gaskets
Head Gasket, cheked the compresion 145-150 in all cylinders
intake gasket
No water inside the engine
What do you guys think? manifolds failure?Block? or i should exchange manifolds ?

Bought the manifolds from ebay you can see on the picture

 

[Don S]

Re: 4.3 V6 Engine water leaks in 3 cylinders

Were the manifolds new? Post a picture of the gasket surfaces (Clean, no old gasket) on the manifold and elbow where they mate together.

 

[eshelon]

Re: 4.3 V6 Engine water leaks in 3 cylinders

Were the manifolds new? Post a picture of the gasket surfaces (Clean, no old gasket) on the manifold and elbow where they mate together.

i will post some pictures tomorrow, just drop off my manifolds at the machine shop for the test

 

[Howard Sterndrive]

Re: 4.3 V6 Engine water leaks in 3 cylinders

GLM - Give 'em a Little Machining

 

[eshelon]

Re: 4.3 V6 Engine water leaks in 3 cylinders

find out the problem the guy sold me defective brand new manifolds...
NOTICE: stay away from this seller on ebay

 

[Bondo]

Re: 4.3 V6 Engine water leaks in 3 cylinders

find out the problem the guy sold me defective brand new manifolds...
NOTICE: stay away from this seller on ebay

Ayuh,.... Welcome Aboard,.... Lets talk 'bout the manifolds, not the people ,....

Yer issue is a known issue with the product you bought,...

As Howard says, those Chinese manifolds need a little machinin' to deck 'em,...
The gasket surfaces are rarely flat enough to work,...

 

[bonzoscott]

Re: 4.3 V6 Engine water leaks in 3 cylinders

Ayuh,.... Welcome Aboard,.... Lets talk 'bout the manifolds, not the people ,....

Yer issue is a known issue with the product you bought,...

As Howard says, those Chinese manifolds need a little machinin' to deck 'em,...
The gasket surfaces are rarely flat enough to work,...

That's interesting. You mean our American made products what made in Canada and Mexico are farmed out to China as well?

 

[eshelon]

Re: 4.3 V6 Engine water leaks in 3 cylinders

Ayuh,.... Welcome Aboard,.... Lets talk 'bout the manifolds, not the people ,....

Yer issue is a known issue with the product you bought,...

As Howard says, those Chinese manifolds need a little machinin' to deck 'em,...
The gasket surfaces are rarely flat enough to work,...

the guy at machine shop told me that they look fine and dont need any machining , they did vacuum pressure test on it and its fail looks like cracks inside the manifold which is not even visible
If we talk about manifolds why not about retailers who selling bad manifold ? i am pretty sure it would be helpful to notify other people to stay away from the bad product...

 

[bruceb58]

Re: 4.3 V6 Engine water leaks in 3 cylinders

This is why I buy OEM manifolds if at all possible.

 

[eshelon]

Re: 4.3 V6 Engine water leaks in 3 cylinders

This is why I buy OEM manifolds if at all possible.

I am agree with you OEM best product, but its kinda expensive for old boat spend $ 1200. money talks anyway but u got what u got, some times its work some time its not