I just fixed the same issue on my 67 1600. Problem was vacuum leaks on the
intake spacers and my carbs were too lean. New gaskets on the spacers,
balanced carbs and richened the air/fuel mix. Runs better than ever.
Roy H.
________________________________
From: Jim Svedise <svedise@hotmail.com>
To:
wattaj <wattaj@yahoo.com>; Datsun Club <datsun-roadsters@autox.team.net>
Sent: Wednesday, June 12, 2013 7:50 PM
Subject: Re: [Roadsters] Vacuum Advance
Issue?
yes it will cause that issue
Jim
__________________________________
Living The Good Life South Of The Border
-----Original Message-----
From: wattaj
Sent: Wednesday, June 12, 2013 7:45
PM
To: Roadster List
Subject: [Roadsters] Vacuum Advance Issue?
Hello,
I
have an issue where at a steady highway cruise speed, just around
3000 RPM or
higher, I get regular hiccups, sputtering, etc.. If I drop
below
3000 RPM I
am usually fine. The engine will pull strong all the way up to
where I dare
accelerate. I have always been suspicious of my distributors
vacuum advance.
Popping of the distributor cap, I tried to manually move
the
advance it by
sucking on the tube, but it would not budge. I took the
advance
mechanism
off the distributor and it was frozen stiff. After some serious
pushing I got
it to move manually, but would still not move under suction.
It
looks like I
should replace the vacuum advance unit. I am curious if that
might be the
cause of my cruise speed issues? Thanks in advance (no pun
intended) for the
help.
Cheers,
Alan
Tualatin, OR
67-1600
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