spinning & bouncing tachometer
#1
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spinning & bouncing tachometer
I have this problem with my tachometer on my SR302 twin. The tact bounces and spins around at idle and when it is running. Have already replaced tact and checked the alternators and the regulators. Replaced the distributor,pick-up and coil. Checked all wiring.
Have gone as far as a limiting boat wiring, made-up short leads and hooked up directly to the coil. Still there is this problem. I have check the ground. Thank you
Have gone as far as a limiting boat wiring, made-up short leads and hooked up directly to the coil. Still there is this problem. I have check the ground. Thank you
#4
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Originally posted by Canada Jeff
The HP500's had a grounding problem! Had to clean off the blue paint on the manifold. I'm sure you have checked the ground, but have you cleaned it?
The HP500's had a grounding problem! Had to clean off the blue paint on the manifold. I'm sure you have checked the ground, but have you cleaned it?
Roby
#5
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No, I'm not running boxes and don't have adapters. Yes the ground is clean and have added a secondary internal ground. the only gage's that are effected are the tachs whether I'm running a single or both engine. I have also tried a isolated power source to run the tach.
Thanks for your help with this.
Thanks for your help with this.
#6
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Join Date: Dec 2003
Location: Ottawa, Ontario,Canada baby!
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Are both Tachs jumping? If so do they jump in sequence?
If its just one Tach, I'd try swapping the wires and see if the problem follows the gage, or if its in the wiring.
If its just one Tach, I'd try swapping the wires and see if the problem follows the gage, or if its in the wiring.