2002 Pontiac Grand Am skipping and is loosing water

Any water in the oil? Those engines have an issue with intake gaskets and head gaskets.If it is running rough and using water, have it chemical tested for a blown head gasket.

no water in the oil 150 lbs compression all six checked the thernostat it is ok

So im guessing it is setting a check engine light with a particular cylinder misfire is how you know what plug to check and wire to look at.Have you visibly checked spark at the plug to be sure it is nice and bright? has compression so fuel and spark are all that is left.As far as coolant l;oss, look real close at theends of theintake gasket, they have issues with them going out on GM V-6's

i took each wire off the plug and put it on a new plug and looked at the fire the code reads the cyl in the back center misfire but it is fireing the only thing i havent checked is that injector on that cyl because you have to remove the intake cover all the plugs are new also wires one could be crossed do you have the fireing order

Yes, but htere is no way to cross just one, it would have 2 off and would run very poorly.Does it misfire at idle but is ok at higher rpm?

the wires are ok the skip is bad at idle but smoothes out some at driving speed but a definate loss of power i am going to replace the three injectors on the rear bank did i mention it is a 3400 ram air gt

Yes, you gave the engine size.That sounds like an injector issue, they usually miss most at idle then appear to smooth out

i finally got this car fixed i inheirated this problem the car was traded in and went to me i am a wholesaler this engine has two different size push rods in it and they were in the wrong place and bent it took one solid week thank you for your help and advice

OH, yeah if we had known the the engine was taken apart, that is a common mistake with DIY repairs on those GM V-6 engines.