Originally Posted by amc49
Are you SURE it's coolant? VERY common for road splash to end up in these holes.
Yes. Car has been sitting idle in a garage for 3 months, but has been started.
We were holding the RPMs steady at 4500 while adding some cleaner to the motor (via the throttle intake) and the coolant started to gurgle and spit up though the channel.
As you can hear (hissing noise) and see (steam from the plug channel) in the video link above this happens after it heats up. The channel starts dry and then fills up with coolant. I think the metal "plugs" in the head (NOT talking about SPARK plugs) or a possible a cracked head -- I don't believe it is any gasket.
2000 Ford Focus Zetec 2.0L, blue, 3 door, automatic, lots of miles. "If something cannot go on forever, it will stop," Herbert Stein.