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First of all, never get too focused on fuel circuits that you ignore the
ignition circuit. Both have the same symptoms. That said, it wouldn't
hurt to look at your fuel pressure at idle. if the flow is too low at
idle the float chamber may not stay full. Had that problem with my
current reground cam. The fuel pump lobe only partially moved the pump
leaver giving me almost zero fuel pressure at idle. An electric fuel
pump was cheaper than replacing an otherwise good cam and cured my off
idle hesitation problem plus smoothed out my idle. It also wouldn't
hurt to check your spark in case of a weak coil.
900 RPM seems like a very high idle. Why do you have it set so high?
Might be a clue.
TeriAnn
1961 TR3A (built spring of 1960)
1960 Land Rover Dormobile
Don't need anything else.
On 11/17/19 6:09 AM, Jim Henningsen wrote:
> Good morning,
> My 61 TR3A is coughing a bit and I need some help diagnosing. Healthy motor,
> stock dizzy, points, red rotor. I replaced the seals on the jet bearings and
> went through the procedure to balance and set mixture. Idles nicely at 900
> rpm, choke works well. Once warmed up though, it has a bad hesitation when I
> push the gas pedal down a third of the way from idle. It coughs and if I
> don�t pump the throttle will stall. Very consistent. The mixture
> adjusting nuts are turned down 10 flats. It does run smoother without
> hesitating with choke on which makes me think it is still not rich enough.
>
> Any thoughts would be much appreciated while I drink my coffee and try to
> keep warm in the frigid south. 50 degrees this am in Florida.
>
> Jim Henningsen
> Ocala, FL
> 61 TR3A
> 62 TR4
> 75 TR6
> 81 TR8
> 82 Jeep CJ8
>
> Sent from my iPad
> ** triumphs@autox.team.net **
>
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/pipermail/triumphs http://www.team.net/archive
>
> Unsubscribe/Manage:
> http://autox.team.net/mailman/options/triumphs/tjwakeman@gmail.com
--
Book - The Essential Guide to Overland Travel in the United States and
Canada <http://overlandtravel.us>
2 years to write and 38 years of travel and camping to learn what to write
*Because the world beckons and life waits for no one*
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<div class="moz-cite-prefix">First of all, never get too focused on
fuel circuits that you ignore the ignition circuit. Both have the
same symptoms. That said, it wouldn't hurt to look at your fuel
pressure at idle. if the flow is too low at idle the float chamber
may not stay full. Had that problem with my current reground cam.
The fuel pump lobe only partially moved the pump leaver giving me
almost zero fuel pressure at idle. An electric fuel pump was
cheaper than replacing an otherwise good cam and cured my off idle
hesitation problem plus smoothed out my idle. It also wouldn't
hurt to check your spark in case of a weak coil.</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">900 RPM seems like a very high idle.
Why do you have it set so high? Might be a clue.</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">TeriAnn</div>
<div class="moz-cite-prefix">1961 TR3A (built spring of 1960)</div>
<div class="moz-cite-prefix">1960 Land Rover Dormobile</div>
<div class="moz-cite-prefix">Don't need anything else.<br>
</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">On 11/17/19 6:09 AM, Jim Henningsen
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:5CB9E28D-9EFE-4384-BFCA-4595DE19512D@gmail.com">
<pre class="moz-quote-pre" wrap="">Good morning,
My 61 TR3A is coughing a bit and I need some help diagnosing. Healthy motor,
stock dizzy, points, red rotor. I replaced the seals on the jet bearings and
went through the procedure to balance and set mixture. Idles nicely at 900
rpm, choke works well. Once warmed up though, it has a bad hesitation when I
push the gas pedal down a third of the way from idle. It coughs and if I
don�t pump the throttle will stall. Very consistent. The mixture
adjusting nuts are turned down 10 flats. It does run smoother without
hesitating with choke on which makes me think it is still not rich enough.
Any thoughts would be much appreciated while I drink my coffee and try to keep
warm in the frigid south. 50 degrees this am in Florida.
Jim Henningsen
Ocala, FL
61 TR3A
62 TR4
75 TR6
81 TR8
82 Jeep CJ8
Sent from my iPad
** <a class="moz-txt-link-abbreviated"
href="mailto:triumphs@autox.team.net";>triumphs@autox.team.net</a> **
Archive: <a class="moz-txt-link-freetext"
href="http://www.team.net/pipermail/triumphs";>http://www.team.net/pipermail/triumphs</a>
<a class="moz-txt-link-freetext"
href="http://www.team.net/archive";>http://www.team.net/archive</a>
</pre>
</blockquote>
<p><br>
</p>
<div class="moz-signature">-- <br>
<p align="center"><a href="http://overlandtravel.us";>Book - The
Essential Guide to Overland Travel in the United States and
Canada</a>
<br>
2 years to write and 38 years of travel and camping to learn
what to write<br>
<br>
<b>Because the world beckons and life waits for no one</b></p>
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