[Mgs] XPAG question*

[Osborne, Paul]

Rick,  Lean, maybe. What do the plugs look like?  If I understand here, simply the engine will not rev over 3000 even it the throttle is wide open.

paul


On Mar 26, 2020, at 11:17 AM, Richard Lindsay via Mgs <mgs at autox.team.net<mailto:mgs at autox.team.net>> wrote:

Hello friends,
   We're house-bound here in Houston with a stay-at-home order in place. My chores are done and Nancy's SUV is 'clayed' and waxed. It looks as-new, which is pretty good for any SUV.
   This morning, after finishing the Toyota, I went back to work on my '53 MG TD. It started right up and ran up to a smooth 3000rpm. After that, the choke control immediately went in a bit leaving the engine to idle at 2000rpm, with the choke lightly applied. After warm, and with the choke pushed full in, the idle dropped to about 900rpm, with a few misses preventing a totally smooth idle. And those words begin my question.
  The engine stumbles when given a little 'wellie' and after gaining engine speed, it runs quite unevenly. No amount of coaxing will get it over 3000rpm. So, what's wrong?! Timing is set properly.
   The stumble is characteristic of leaning out, as when the carb dampers are empty. And overly lean charge is indicated by the fact that when cold, with enrichment, to engine will rev to 3000rpm easily.
   I'm going to lower the jets another couple of 'flats' to see if that helps. In the mean time I ask: What else might I have missed?

Rick
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Paul Osborne
Department of Electrical and Computer Eng
University of Rochester
201 Hopeman Building RC
Rochester NY 14627
   585-275-5226





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