hey forum..

recently i went and did a cambelt change o 20v engine. changed the water pump and tensioners aswell. but when i fill the radiator with water, it seems to spill from the new waterpump, i have suplied it with new gasket/o ring. filled the container, and put it under pressure, and water starts to spill from behind belt cover. so i haven't had the car startet. i tested with pure water. any ideas of what i can do? or should i just cross fingers and fire it up ?

I know it's a ball ache, but if it was me, I would be stripping it back down and checking the seal around the pump.

It's pointless firing it up if it's definitely leaking.

any chance a 50/50 mix of water and antifreeze might seal it up a bit ?

or is it final to strip down and, re check.

I honestly dont think it will make much difference at all, especially if it is a very noticable leak. you'd have more luck using k-seal or something like that, but you don't really want to be putting that crap through your water system anyway.

I would strip it back down mate. At least you will know it's done properly and you'll have peice of mind

I would buy a good quality water pump and do it again. You can not compromise on anything to do with the cambelt. I use Fiat original.

or take it to some one who knows what they are doing and uses quality parts as Adrian says, I use POWER ITALIA, they only use fiat original parts

Did you put enginesealant (silicone) there?
Thin layer on the shoulder of the pump so some of it pushes out when the pump is tightened.
Fiat garages do the same, so did I and have had no problems.

only thing used on the pump is silikone paste to grease the o ring, no gaskets at all. it is a good quality pump.

Guess i just have to take it apart.. again..

On the two waterpumps ive changed I didnt use any products to seal it, I just cleaned the surface on the head and used the O ring. Also both cars had no sign of silicone on the pumps i removed. Im not saying using silicone is better or not but I know I didnt have any problems without it and its not something ive seen on the cars ive worked on.