I tried MLS head gaskets on one of my rebuilds and was disappointed in the results. If the machine shop doesn't get a really smooth finish, the MLS gaskets won't seal. I had a small area near an oil drain hole that showed milling marks - it leaked oil right there. Sometimes the heads are milled smooth, but an uncut block can leak with MLS gaskets due to coolant etching around the coolant passages.

Another leak possibility is at the coolant passages in the lower intake. The intake has a habit of warping up on the ends and sometims a rebuild needs the lower intake trued. The coolant passages on the lower intake can get quite a bit of coolant etching over time - a skim cut helps, as does using Copper gasket spray on the mating surfaces of the heads/lower intake and both sides of the gaskets - 2 coats.

I'm not sure if your engine is a 24v or 12v, but if there is a composite OE gasket that will fit, it will likely fix your problem - if it's leaking because of poor milling and MLS gaskets. If no OE composite gasket is available, see about a FelPro composite set.

I won't mention anything about measuring head bolts and block hole depth...... <img src="/forums/images/graemlins/cyclops.gif" alt="" />

Frank