1982 Jaguar XJ6 Coolant in intake

Hi Ravjr66, first off whats a few years, that the car sat up? Was it started on occasion or just sat for years? My guest would be the Intake Manifold gasket could be dry rotted, Have you done a compression check on the motor? How much coolant are you loosing. The work involve is not like rebuilding the motor. Get back to me.

Bentley,

The car sat for several years without being started. It was parked in the garage after coming home from an oil change and finding a puddle underneath the car. The previous owner thought it was engine oil. The engine oil level seems to be okay, although the cold start injector is spraying fuel out of the injector body. I presume that this caused the puddle, and the owner didn't take the time to check what the fluid was (on the garage floor).

This weekend, I pulled the intake manifold and coolant manifold to see how it could be possible for that much coolant to find its way into the intake plenum. It would seem that either sealing between the intake and the cylinder head would be an issue or a hairline crack between the a coolant passages and an intake runner. I was going to call our local machine shop and see if they would hot tank the intake, then check it with dye penetrant for cracks. If nothing turns up, I will assume that the problem was with the intake gasket. I looked at the engine design relating to cylinder head position and intake manifold position and feel that I can rule out a head gasket problem. The coolant would have to run uphill before getting into the intake manifold. I guess there is always the chance, but I am ruling it out for now.
The intake studs had some dissimilar metal corrosion built up in the intake bolt bosses which may have pushed the intake away from the gasket. Just an idea.
Thanks for the help. Rocco