[DeTomaso] more evidence I'm a not much of a mechanic...

[Mark McWhinney]

I recommend against using your finger to complete the circuit from the coil to the block.  (Don't ask)

________________________________

From: detomaso-bounces at realbig.com on behalf of Larry - Ohio Time Corp
Sent: Fri 2/19/2010 3:12 PM
To: 'Christopher Kimball'; 'Pantera List Serve'
Subject: Re: [DeTomaso] more evidence I'm a not much of a mechanic...



Hi Chris,

Your test will work fine. If you are running an electronic ignition you
should have a ground wire (stripped wire under a motor bolt) to put the
spark plug wire on. It is not a good practice to have the plug voltage not
go to ground for a long time. You can then pull it back a bit to make sure
the spark is strong and blue in color. Caution should be taken doing this as
the spark volts/amps can bight ya.

Story time - Had a kid in the neighborhood that could hold a spark plug wire
and not get a shock. Car, lawn mower, motor cycle it did not matter. He
would just say "yes you have spark"....very odd.

Larry - Cleveland

-----Original Message-----
From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com] On
Behalf Of Christopher Kimball
Sent: Friday, February 19, 2010 4:47 PM
To: Pantera List Serve
Subject: [DeTomaso] more evidence I'm a not much of a mechanic...


I had my motor built to a 408 stroker not long ago, but lately, it doesn't
"feel right."  It feels as if it may be missing on once cylinder, but I'm
not sure how to test that.  Will this work?:

Let the car idle, and while it's running try disconnecting the spark plug
wires, one at a time to see if it makes a difference in how the engine runs.
My logic would say every time I disconnect a wire from a firing cylinder,
the motor would run a bit rougher.  If I disconnect the wire to the cylinder
that isn't firing, it wouldn't make any difference, since that cylinder
wasn't firing in the first place.

Of course, the problem could be something else; once before, with my old
motor, I thought the same thing was happening, but it turned out it was an
exhaust gasket leak.

Thanks for your thoughts on this.

Sincerely,


Chris
#3846
                                         
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