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Re: [Fot] TR4 spitting thru Webers - haaaalp!

To: "J.C. Hassall" <jhassall@gmail.com>, Friends of Triumph <fot@autox.team.net>
Subject: Re: [Fot] TR4 spitting thru Webers - haaaalp!
From: Tony Drews <tony@tonydrews.com>
Date: Tue, 25 Aug 2015 13:01:24 -0500
Delivered-to: mharc@autox.team.net
Delivered-to: fot@autox.team.net
References: <CAO=iLWaF5+t_LZ9otc_t2avaMoU3gzU04vobjvfx9PqKKfFWZg@mail.gmail.com> <CAO=iLWa75qiJ2i6RJZi=0MWc_79yNvXNJ+2b-diog5uQyU03nA@mail.gmail.com> <20150825015128.0B7F83502CEB@barracuda.supercp.com> please include it with any abuse report tony@tonydrews.com SCORE=1.64 using per-user scores of TAG_LEVEL=1000.0 QUARANTINE_LEVEL=4.0 KILL_LEVEL=5.0 tests=HTML_MESSAGE, MIME_HTML_ONLY, MIME_QP_LONG_LINE, MIME_QP_LONG_LINE_2, MISSING_MID, SARE_ADLTOBFU Rule breakdown below pts rule name description ---- ---------------------- -------------------------------------------------- 0.14 MISSING_MID Missing Message-Id: header 0.68 SARE_ADLTOBFU BODY: Contains OBFU adult material 0.00 MIME_HTML_ONLY BODY: Message only has text/html MIME parts 0.00 HTML_MESSAGE BODY: HTML included in message 0.00 MIME_QP_LONG_LINE RAW: Quoted-printable line longer than 76 chars 0.82 MIME_QP_LONG_LINE_2 RAW: Quoted-printable line longer than 76 chars
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The reason I mention fuel pressure is that the Webers don't seem to like
much in the way of pressure.&nbsp; I run 2 psi.&nbsp; Seems like much
higher than that and the float doesn't stop the fuel from going into the
float bowl.<br><br>
If you've got a pressure regulator that's providing varying pressure you
could see richness when it goes over the limit of the carbs.<br><br>
Cheers, Tony<br><br>
At 08:51 PM 8/24/2015, Tony Drews wrote:<br>
<blockquote type=3Dcite class=3Dcite cite=3D"">How's your fuel pressure when
the carbs seem to go south?&nbsp; How about EGT's?&nbsp; I have those
gauges exactly for this kind of issue.<br><br>
Cheers, Tony<br><br>
At 04:13 PM 8/24/2015, J.C. Hassall wrote:<br>
<blockquote type=3Dcite class=3Dcite cite=3D"">Many thanks to all who
responded.=C2&nbsp; I should have mentioned that the engine runs like gang
busters then spits at apparently random times (irrespective of
throttle).=C2&nbsp; I did receive some great ideas, tnx.=C2&nbsp; The points
are new (replaced the XR3000 as a test), all grounds are common at the
starter and the valves are all set to spec. TDC is bang on and cam timed
properly (I was really AR about that!).<br><br>
I'm going to pull the header and install 2 O2 sensor bungs.=C2&nbsp;
Installing the AFR sensor in the collector was a mistake (I assumed both
carbs would be the same, but now I need to determine if one of 'em is a
problem).=C2&nbsp; Then I'll start implementing the suggestions.<br><br>
Tnx again to everyone who responded.=C2&nbsp; I will post the results when
it's running as intended.<br><br>
jim<br><br>
On Sun, Aug 23, 2015 at 8:14 PM, J.C. Hassall
&lt;<a href=3D"mailto:jhassall@gmail.com";>jhassall@gmail.com</a>&gt;
wrote:
<dl>
<dd>My TR4 spits thru the 40DCOEs at idle and speed.=C2&nbsp; Timing is set
to 32 degrees at 3K RPM, so idle is about 12 degrees.=C2&nbsp; I thought
that spitting thru the carbs meant too much advance, but I believe timing
is ok.<br>

<dd>The AFR (sensor is in the 4-1 collector - bad idea) at idle jumps
between 13.8 and 15.3 (seems like an enormous swing!).=C2&nbsp; Spitting
doesn't seem to coincide with any specific AFR.=C2&nbsp; The carbs have
been synched, etc. =C2 34 chokes, 50F9 idle jets, mains are 120 with 200
air correctors.=C2&nbsp; The mains seem awfully small.=C2&nbsp; Even so, the
AFR at speed is 12.8-13.5.=C2&nbsp; Plugs are NGK BP6HS, which are sooty;
the ground lug burns clean about half way.<br>

<dd>What am I doing wrong???=C2&nbsp; I'm at the end of my wit (you're
right Craig, it's a very short walk)<br>

<dd>tnx<br>

<dd>jim<br>

<dd>63 TR4 in autox prep, 99.5% finished, 90% to go<br><br>
</dl><br>
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