[Diy_efi] Re: Diy_efi Digest, Vol 18, Issue 23

[Bill Washington]

Bill,
    Try this - pressurize the cylinder - with the air hose held in 
firmly, then slowly open the exhaust valve, rotating it while doing so 
if possible (I don't know how much access you have).  then close the 
valve to see if there is any improvement.
    Alternately Rotate  the rengine until that piston is at TDC, remove 
the valve springs, and rotate the valve with your fingers against the 
seat to dislodge any carbon, then try re-pressurizing.

Was the engine working or idling when it ate the timing chain? If it was 
idling there 'may' be a chance it survived(that happened to a friend who 
had a Jag - the timing chain snapped at idle with no resulting other 
damage!!! quite amazing - he simply fitted a new timing chain and all 
was well!), if it was working the likelyhood is small!

Regards
Bill W

>
> Subject:
> Re: [Diy_efi] Reality check - no efi content - long winded
> From:
> Bill - Comcast <b.shaw at comcast.net>
> Date:
> Sun, 20 Aug 2006 20:54:07 -0400
> To:
> diy_efi at diy-efi.org
>
> To:
> diy_efi at diy-efi.org
>
>
> Hi Leo,
>
> L&A in Glenville, NY did the work.  They're just north of Schenectady. 
> Air in the spark plug hole showed bad exhaust valve,  air leaking out 
> the tail pipe.  "L" of L&A fame says it's a chunk of carbon holding 
> the valve open,  swears the valves are OK because they did a 
> compression test.
>
>  
>