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Poor Engine Performance Problems

  1. Disconnect 4-pin connector at distributor, and install a jumper wire between pins "A" and "C" of distributor connector. If problem remains, check other causes of poor engine performance.
  2. If problem disappeared, remove jumper wire and reconnect 4-pin connector. Without disconnecting 10-pin ESC connector, attach jumper wire from pin "A" to pin "B". If problem remains, proceed to step  5).
  3. If problem disappeared in step  2), remove jumper wire and disconnect 10-pin connector at controller. Connect ohmmeter leads to pins "B" and "K". Resistance should read 175-375 ohms. If OK, check for engine noises other than detonation that might cause input to sensor.