SE 510 Posted August 11, 2023 Report Share Posted August 11, 2023 I have a 70 510 that is a track car and when I go over 2000 RPM the tach starts jumping. I have a curved Datsun breakerless distributor. Thanks Quote Link to comment
datzenmike Posted August 11, 2023 Report Share Posted August 11, 2023 Lose Loose wire? Quote Link to comment
Stoffregen Motorsports Posted August 12, 2023 Report Share Posted August 12, 2023 (edited) That sounds like a broken tach. I don't know what fails inside them, but I've seen this many times before. But even if it is broken, it can be fixed, so don't throw it away. Edited August 12, 2023 by Stoffregen Motorsports Quote Link to comment
SE 510 Posted August 12, 2023 Author Report Share Posted August 12, 2023 I found my Issue was the coil. I replaced it all good. Thanks Quote Link to comment
datzenmike Posted August 12, 2023 Report Share Posted August 12, 2023 Can't see how it would run above 2k if an erratic signal. Put it back on, bet the act of changing it fixed the loose connection. Quote Link to comment
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