> -----Original Message-----
> From: Barry Schwartz [SMTP:bschwart@pacbell.net]
> Sent: Friday, March 13, 1998 8:20 AM
> To: Tom Shirley
> Cc: triumphs@autox.team.net
> Subject: Re: Compression Readings on Spitfires
>
> Don't be too concerned about the specific number, as much as the
> difference
> between the cylinders. You shouldn't see more than 15-20 psi
> difference
> between ANY cylinder. Anything lower than 100 might be cause for
> alarm,
> and remember to do this with the throttle wide open, high tension coil
> lead
> grounded or what I do is use a spark plug from the coil high tension
> lead,
> body of the plug grounded to the block (bypassing the dist. cap) to
> provide
> the proper resistance (required on some electronic ignitions)
>
Am I missing something here (very likely)? Or would there be a problem
doing a compression test after disconnecting the *power* supply to the
coil instead of grounding the circuit further down the line?
I am really curious since I was planning on doing a test this weekend
but I just was going to pull the power off the coil (the wire from the
harness). No power, no spark I think. Or did I miss something?
Peter Zaborski
76 TR6 (CF58310 UO)
Calgary AB Canada
|