On 9/18/2007 6:08 PM Geza Polony wrote:

> No, we didn't solve the matter of the contact patch, and we also didn't
> figure out why Mike '84 is running rich on one side and lean on the other.
> Lots of work to do!

I think the rich/lean thing has been sorted out. I have not said anything
for three reasons.

Reason 1. I need to put a few more miles on the new plugs to make sure
that the fix "took."

Reason 2. I was so certain that the right and left intake runners were
tight against the heads that I didn't even check. I should have -- the
lean side intake manifold bolts were not tight. Tightened them and all
four new plugs are looking like they are igniting proper mixtures. A IR
thermometer was discovered and it indicated that all four exhaust pipes
are the same temp coming out the heads. All indications are that I had an
air leak, as so many suggested.

Reason 3. I knew I would look like a numbskull for not having checked the
bolts right away, and for claiming that they were tight.

This may not have had any effect on my mileage, which was the take-off
point for this investigation. But that's for after this upcoming camping
trip. I'll have plugs to look at and miles and gallons numbers to crunch.

--
Mike "Rocket J Squirrel" Elliott
71 Type 2: the Wonderbus
84 Westfalia: Mellow Yellow ("The Electrical Banana")
74 Utility Trailer. Ladybug Trailer, Inc., San Juan Capistrano
KG6RCR