Merc 502 MPI Tach bounce
#1
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Merc 502 MPI Tach bounce
One of my engines has a bounce in the tach at idle up to about 2500 RPM. I don't detect a miss and it doesn't seem to effect performance. Mechanic scanned it- no codes, compression OK, changed to plugs- still there. Any ideas?
#9
Re: Merc 502 MPI Tach bounce
Originally Posted by Excalibur502mag
I am having the same problem. Please let me know what you find out.
US1, could you please explain what the 4-6-8 selector switch is?
US1, could you please explain what the 4-6-8 selector switch is?