Faulty Tach or Possessed OMC?

espnman

Recruit
Joined
Jun 1, 2010
Messages
4
Something very stange happened to me the other day.

After starting the engine, and letting it warm up a bit, I hit about 41 MPH WOT @ 4500 RPMS. Nice & normal.

After about 20 minutes of running I shut off the engine and started it back up.

This time I was quickly reving into the 5500 rpm range WOT and stopped at 36MPH (afraid to go any longer)

I was able to duplicate this today.

Any idea what could be going on?

Running an 88' OMC Cobra 4.3l 4V

Keith
 
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