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<p>I ran into this issue years ago restoring my roadster. I
eventually ended up changing my carb needle profile so the car
would idle AND rev above 3000 RPM. The needles were designed for
British SUs, but they work in the Hitachis just fine.<br>
</p>
For those wanting to give them a try, I can only vouch for
functionality on the 1600 and in California. The needle profile I
use is the ADQ. The car will run regular without a burp.<br>
<br>
Paul Bauman<br>
Westminster, CA<br>
67 1600<br>
<br>
<br>
<br>
<br>
<div class="moz-cite-prefix">On 06/29/2017 09:26 AM, D Riedel via
Datsun-roadsters wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAG=2RTMHod1c06yHVke13Nv=qQR1V-B16VFxVE-RNLf08aPYGg@mail.gmail.com">
<div dir="ltr">Thanks for the advice guys. There's lots of good
stuff there to try.
<div><br>
</div>
<div>The fuel is either Co-op premium (a local operator), or
Shell premium. For the latter, I'm not sure where the fuel is
actually sourced, but it is 91 octane and contains 0%
ethanol. The Shell apparently contains a lot of cleaners
(which they are very excited to tell you about),and it too is
91 octane, with no ethanol. However, the fuel has sat in the
car since late October. I've had trouble post-winter start-up
with gunk-filled fuel filters in the past, but not with this
rough running issue.</div>
<div><br>
</div>
<div>There is oil in the dashpots, although it may be a bit low
(I know it's covering the piston, but possibly only just)</div>
<div><br>
</div>
<div>I will double-check the dashpot oil level, plug wires and
spark along with doing carb cleaner vacuum leak tests.</div>
<div><br>
</div>
<div>I'll also give it a chance to run and little and check for
uneven carbs, stuck floats, etc.</div>
<div><br>
</div>
<div>Meanwhile, Ross at Sports Imports is tracking down the
gaskets for me.</div>
<div><br>
</div>
<div>Cheers,</div>
<div>Dave</div>
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<div class="gmail_extra"><br>
<div class="gmail_quote">On Thu, Jun 29, 2017 at 3:46 AM, RWM <span
dir="ltr"><<a href="mailto:rwm@rwmann.com"
target="_blank" moz-do-not-send="true">rwm@rwmann.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">John and
Dave,<br>
<br>
I use 'Stabil' fuel conditioner when over-wintering the car
and have never had a fuel-related issue.<br>
<br>
Did have a sticking carb one spring, but that turned out to
be a sunk float. R&R and good to go again.<br>
<br>
- Bob Mann, '68 2000 Solex
<div class="HOEnZb">
<div class="h5"><br>
<br>
<br>
On 6/29/2017 5:08 AM, J Sandhoff via Datsun-roadsters
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
I second Paul's observation. Does Canada use
oxygenates in the fuel<br>
like the States (i.e. ethanol; refined corn down
here). If so I<br>
suspect your gas has gone sour.<br>
<br>
I rebuilt my SU's last fall, then the car
overwintered. I'm getting to<br>
rebuild them again now 'cause they're totally gummed
up with a putrid<br>
green sticky mess. California gas is the worst.....<br>
<br>
-- John<br>
John F Sandhoff <a
href="mailto:jsandhoff@gmail.com" target="_blank"
moz-do-not-send="true">jsandhoff@gmail.com</a>
Sacramento, CA<br>
<br>
<br>
On Wed, Jun 28, 2017 at 2:40 PM, D Riedel via
Datsun-roadsters<br>
<<a href="mailto:datsun-roadsters@autox.team.net"
target="_blank" moz-do-not-send="true">datsun-roadsters@autox.team.n<wbr>et</a>>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
I started my 2000 SU the other day after it's winter
break and it ran so<br>
rough I thought it might bounce off the mounts. As
I peered around the carb<br>
area hoping to spot something odd (maybe a leaky
hose causing a vacuum<br>
leak?), I noticed that I don't have gaskets between
the air filter housing<br>
and the carbs. Yikes. First of all, I really
wonder how this has been<br>
affecting things all along, but second I'm wondering
how I might start<br>
correcting the rough idle. Since the car has never
had these gaskets since<br>
I've owned it, whatever is currently happening isn't
exactly related (that<br>
is, it ran fairly smoothly last year).<br>
<br>
Any thoughts on 1) the missing gaskets, and 2) a
process of elimination to<br>
smooth out the idle.<br>
<br>
Thanks everyone,<br>
<br>
--<br>
Dave Riedel<br>
'69 2000<br>
Victoria, BC<br>
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-- <br>
<div class="gmail_signature" data-smartmail="gmail_signature">Dave
Riedel<br>
'69 2000<br>
Victoria, BC</div>
</div>
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