Did you check the compression with some oil thrown into the cylinder? This
will usually pinpoint the problem better. If the oil brings up the
compression it means the rings are shot, and if not, it means the valves are
the culprits.
The head may have an internal leak or crack or the valves are not seating
properly.
Mike
----- Original Message -----
From: "Jeff Etheridge" <maurell@bellsouth.net>
To: "Datsun Roadster" <datsun-roadsters@autox.team.net>;
<fetheridge@nctc.com>
Sent: Wednesday, July 04, 2001 7:19 AM
Subject: Help! (Long, but OT)
> Jeff, '68 1600
>
> Replaced the head gasket for the third time. Charm! right? Wrong.
>
> I sent head to shop this time; resurfaced, pressure tested, valve job,
> new valve seals...$130. After I layed the new gasket on the head there
> was a groove along the metal ring of the number 4 cylinder. Back to shop
> and had it welded and then surfaced again...another $32. $240 in this
> time including the gasket set and seals.
>
> I backed the timing off a little because I thought it might be a little
> high???? (just some advice I got???)
>
> Put it back together by Thom's Tech Tips...as always. Reset the points,
> verified gap in plugs, set valve to .020 cold, and back together.
>
> Wouldn't start!?! Sounded like it wasn't firing...got some starting
> fluid and tried. It was firing but wouldn't stay running??? Monkeyed
> with the timing...still not starting? *(&^*%
>
> Pulled the plugs...1 and 4 had carbon on them; 2 and 3 were
> clean...(cleaned them when I verified gap). hmmmm. Monkeyed with the
> timing some more. Manual adjusted as I don't have a light...have never
> used one, and don't know if I'd know how?
>
> Decided to check for compression since I got a tester for x-mas last
> year. 1, 3 and 4 were about the same, 130-150, something...I forgot?
> Number 2 had NOTHING!!! ZERO. Checked it three times to make sure I
> wasn't creating a cockpit error.
>
> Pulled the head again...looks ok? Thought maybe I dropped a valve... I
> don't know what else to do. I am not a mechanic, I am probably a novice
> and am trying to learn from my mistakes...but I can't keep buying gasket
> kits at $30 a pop! Eventually they'll run out of gasket kits...
>
> Any comments appreciated...
>
> Jeff
> '68 1600
>
> p.s....OOPS, I DID IT AGAIN!!!!! bought a '68 2000 two weeks ago. I have
> this one five years and still don't have it running and had to buy
> another one...duh!
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