re
the temp sensor II always reads HOT based on the Bentley test

sounds wonky to me.
I wouldn't do anything else until that was working right.
They're a weak link almost.

Alligator clip !????
no no no.
it's an input to a computer for goshsakes.
that connector also is a weak link. - the stock one after many years.

I'd check that timing is advancing properly too.

coolant seldom gets into the oil on waterboxers..
but you can have all kinds of coolant issues besides that one.

is it running up to temp ?
very important.  Some people think 1/4th on the gauge is good ..it's not.
as I said ..if temp sensor II shows only one resistance..toss that one and
get another one to start with.

and there is a whole thing about shorted oxygen sensor signal ..but I have
not run into that myself.
Scott
www.turbovans.com

----- Original Message -----
From: "David White" <sirgrumpsalot@GMAIL.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Saturday, July 23, 2011 3:32 PM
Subject: 84 westie at 10 miles/gallon

>A recent purchase, came with the low mileage
> New O2 sensor
> New injectors
> Replaced throttle body with one that I knew was good
> New spark plugs and all the other small stuff
> cylinder pressure 110-125 across all 4
> swapped AFMs with my other vanagon that gets better mileage
> the connector clip on the temps sensor II to the ECU is loose so it's
> zip-tied in place
> the temp sensor II always reads HOT based on the Bentley test
> timing seems OK, will get up and go when needed
> no coolant in the oil
>
> Any help would be appreciated.