Spastic Tach??

[Boss Hawg]

I have a 1987 16' Fiberglass Bassboat Starcraft with a 1987 70hsp Johnson i've been sorta refurbing-
The Tach seem to work OK but at times when i first start it up it goes crazy for a few seconds (spins around) then acts normal

Is this normal or should i get a new one?

 

[arks]

Re: Spastic Tach??

Sounds like it could be a poor ground.
Clean and check the connection at both ends.

 

[Boss Hawg]

Re: Spastic Tach??

Sounds like it could be a poor ground.
Clean and check the connection at both ends.

Thanks, been set up a couple years & a good possibility