To find TDC cyl. #1 remove all spark plugs. Now manually turn the crank
clockwise with a socket and ratchet. When you get a quarter turn away from
the timing marks put your thumb over cyl. #1. If it builds up pressure under
your thumb then this will be TDC cyl. #1 when the pointer is on the crank 0
degree mark.
George Hobers
69 2000
----- Original Message -----
From: "Roadster Dude" <roadstrdude@yahoo.com>
To: "datsun list" <datsun-roadsters@autox.team.net>
Sent: Monday, October 25, 2004 8:20 PM
Subject: Best way to make sure U20 is at top dead center..
> Hello Everyone..
>
> What is the best way to check if a U20 is at top dead center without
taking the
> Valve cover off.
> My main reason is to make sure my plug wires are correct and going to the
apropriate
> spark plugs from the distributor.
> Sounds simple enough but I wanted to make sure...
>
> And what is the best way to check for spark ... I have a couple of those
cheap light gizmo that goes in between the distributor and the spark
plug..but they are worthless.
>
> Thanks for the help..
>
> Raul
>
>
> ---------------------------------
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