<VV> Diagnose engine "knock" ?

[shortle]

Odds: Even money. Did you have good compression in all 6 cylinders before you replaced the parking brake cable?
Timothy Shortle in Durango Colorado


-----Original Message-----
>From: Charles Lee <Chaz at ProperProper.com>
>Sent: Oct 15, 2010 12:43 AM
>To: virtualvairs at corvair.org
>Subject: <VV> Diagnose engine "knock" ?
>
>I back to working on my 1967 Monza 110 PG that was "knocking" before it ran 
>long enough to warm up.
>
>I also had the gas "aroma" that plagued me even after the carbs were 
>adjusted to be exactly what the GM manual specifies and according to Bob 
>Helt's book.
>The timing was spot on, too, but still she knocked.
>
>I checked my compression to find 0 in #3, as I posted earlier (before I got 
>distracted with a friend's overheated Saturn).
>
>After thinking about my problems, they all seem to be related ?
>
>My theory is that gas in the exhaust comes from the exhaust valves, which 
>are hanging open because the #3 exhaust valve seat has worked loose, which 
>has also been causing the "knocking" before it was warmed up.
>
>So, my "knock" and "aroma" in the exhaust are all symptoms of the same 
>problem ?
>
>I'm pulling the head and it should be out tomorrow (Friday), but I'm having 
>trouble with one pushrod guide bolt that pulled the stud out with it, and 
>the pushrod tubes are stuck tight.
>
>What are the odds that I'll find a dislodged valve seat on #3 ?
>
>Charlie 
>
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