[V8] MPG Partial Update

[Jason Wilkerson]

Got to work on the V8's MPG problem again.  Short replay - bad MPG leads
to tests - find O2 code - find one cylinder 50-60psi low on compression. 
Update - Tested compression again - found low compression, did leakdown -
seems to be leaking past piston and coming up out of the crankcase.  SO -
this means that the valve train is tight and I'm looking for a motor -
well maby not.  On a whim I thought 'hey, I'll try some seafoam - what do
I have to loose?'  I put the cylinder in question to TDC compression, turn
it back a few degrees, pour seafoam in the spark plug hole, pull the crank
back a few more degrees, then back to TDC.  Then I place air pressure on
the cylinder - as to force the liquid down past the rings so it can soak,
expecially at the top of the piston, where gravity is against you.  I let
it sit for 8hrs or so, turn it over without a spark plug, as to not create
bent rods via hydrolock, replace everything and start it to let it burn
all that seafoam out.  Run it till it quits smoking, pull plug, check
compression - 145psi!!! - thats a clean 55psi better than I have ever got!
 I'm really exited, but I don't want to get my hopes up too much - I'm
still afraid that the seafoam was causing a 'false seal' that will fade
with time - but I don't think so because I let it run plenty long enough
to burn that off.  I will drive it tomarrow and post back my compression
results.  I think if the O2 code disappears, and my MPG's are back up - I
will know the truth faster!  One can hope.  Thanks for beiing my sounding
board!

                Jason 

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