franckybosnie

Oh ... yeah last time I used a straight edge ... everything is OK ..

mjr46

surfaces are not pitted at all??

franckybosnie

No , and I cleaned every piece of gasket ... all parts are neat!! I'm confused[]

franckybosnie

If the engine is supposed to be coolled down with standard pump , and I'm using a reverse rotation pump ... could it cause a problem ??

mjr46

if the leak is definately coming between the gaskets then you'll have to make sure the impeller is not hitting the backing plate at all which would allow it not to sit flush..and this would be evident once it is all tightened down and when you went to turn pump over by hand it'd bind or be stiff or make a scrapping noise

franckybosnie

Well , it seems to sit flush ... I tried to spin the pump , everything went fine . Iad I could see the RTV getting "squeezed out" while I was tightening the bolts ...

franckybosnie

Anyway there is a backing plate

mjr46

is it possible that the pump may have a hairline crack??..I use permatex's "the right stuff" = it's like super glue!!!!

franckybosnie

Well , I checked it many times .... Used 2 different pump , did the same thing

franckybosnie

Any other idea ?[&:]