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MG TD TF 1500 - Nail, shoe, horse, rider, battle - TD

Interesting day. Went motoring with other lbc folks. Made a stop after about a hundred miles. Noticed a bit of roughness just before the stop. After about an hour we headed off toward a lunch stop, about 20 miles away. Before we got there Lazarus (my 52TD, always the gent) began to run very rough and with backfiring and refusal to run below 2500 rpm. I decided that it must be caused by the new plugs that I installed yesterday. The old ones were a perfect light tan. Had the old ones in my toolkit. Swapped them back in after lunch. New ones were a bright white! Lazarus wouldn't start. Checked timing - right on; checked for spark - lots of it; checked fuel pump - fine. Someone spotted that the carbon was missing from the center of the distributor. I just happened to carry a spare, but the old carbon was jammed up in the cap. No sweat, I carry a spare cap. Put it in. Still wouldn't run.
Just before I decided to put the points plate back in place of the pertronix, Paul Hinchcliffe suggested trying thr rotor from his TD. Vrooom! One of the guys with us just happened to spare rotor for his TR3. It fit! Vroom - home we come. The carbon from the failed contact totally screwed up the rotor. I'll try to get some images tomorrow. Bud
Bud Krueger (TD10855)

Interesting problem Bud. I look forward to seeing the photos. I have had the Pertronix installed as well, and do you suspect that "it" was the cause of, "The carbon from the failed contact totally screwed up the rotor."?

Would you advise carrying a spare rotor as a result of installing the Pertronix, or I'm I missing something else here?

Still on the learning curve -- John
John Brickell

Pertronix is fine, thank you. It was the disintegration of the carbon brush that caused the splaying of carbon about the rotor, leading to its demise. I normally carry a spare rotor. Seems I forgot to replace it the last time I gave one to someone with a problem. Bud
Bud Krueger (TD10855)

This thread was discussed on 30/08/2010

MG TD TF 1500 index

This thread is from the archive. The Live MG TD TF 1500 BBS is active now.