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Old 6th May 2017, 10:00   #21
dbt01
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Quote:
Originally Posted by peterv6 View Post
Could it be it doesn't like red antifreeze? 2004 red antifreeze wasn't as comen as today and is more aggressive I think?
No way of knowing. I have always used OAT (G12+ spec), ready mixed, I suspect 50/50 ; doesn't say. That's only the last 2 years. There are signs that it was on pink OAT before. Can't say if that was always the case.

It is a very common failure, however, also with Mustangs and Crown Victorias, and I doubt they are regularly fed OATs in the States.

Mileage doesn't appear to be the reason. Mine failed when the hose was replaced at over 200k miles. Some fail at around only 20% of that mileage. Maybe age in years? The crumbly state of the material means that its not over-tightening as such, even though the failure occurs often when the hose is replaced as a result of the brittle state of the material.

I did have similar problem on a Pontiac Bonneville. Also a hose connection point to the head and the material used was visibly similar to that in our Ford engines. GM made that as a screw in union fortunately and it was readily available at the dealer, which may indicate something!
Same stuff? No idea. Same problem? Yes.

It would be nice to know if Ford or material-scientists have ever looked at the problem and pinpointed it, otherwise it remains conjecture.

Edit: Googling around I see that there was a class action taken out in the States on the plastic intake failures on the 2V. Ford put it down to overheating, coolant loss and/or over-tightening. In the absence of any proof to the contrary (can't prove the negative!), Ford won the action. Ford recommend replacement of the intake manifold in accordance with Ford maintenance and service/repair procedures and the vehicle be maintained and operated as specified by the manufacturer at all times. So there !!

David

Last edited by dbt01; 6th May 2017 at 11:34.. Reason: Extra info re Ford response
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