As long as you are in there you should definatly replace the seals ("O" rings) on the distribution pipe. Be aware though that there is a very high liklyhood that you will break the bolts off so be prepared. You should also clean out the webs in the center of the engine of all the crud that has accumulated. It would even be a good idea to paint the area to prevent corrosion. Before you go reassembling the intake manifold you should fill the cooling system and pressure test to make sure that there are no leaks. It is very hard to see the area clearly and impossible to fix any leaks once you put the intake back on. David Teitelbaum vin 10757 --- In dmcnews@xxxxxxxxxxxxxxx, id <ionicdesign@xxxx> wrote: > The water pipe under the intake with the 3 sensors on it should i leave it on when doing > a water pump change or should i take it off when i do the water pump change? > > Mark > 6683