tachometer on Evvy

[baggywinkles]

The tach on my '92 120hp evvy is acting up: it sometimes works (usually at lower rpm) and jumps around alot. Any suggestions? I disconnected the VRO; would this affect the tach?<br /><br />Also, how can you tell the difference between a "four stroke" and a "two stroke"? What is my evvy?<br />Thanks,<br />Jim

 

[Joe Reeves]

Re: tachometer on Evvy

Frankly I have no idea what a "evvy" might be.<br /><br />A 4 stroke has a camshaft and intake/exhaust valves. The piston has combustion and a power stroke every other revolution.<br /><br />a 2 stroke simply had leaf/reed valves and has a combustion and power stroke every revolution.

 

[kirkland]

Re: tachometer on Evvy

I would suggest checking your model number to see what you have....is this a new problem or pre-existing (i.e. new since vro disconnect) and if i'm thinking correctly if it's got VRO wouldn't it be 2-stroke??? just my $0.02

 

[angus63]

Re: tachometer on Evvy

Chevyrude or Evinrolet?????

 

[baggywinkles]

Re: tachometer on Evvy

Evinrude!<br />New problem since disconnect of VRO.

 

[kirkland]

Re: tachometer on Evvy

I can't see how disconnecting the VRO would affect the tach.....but i'm no expert, I'm sure others here will chime in with more useful knowledge.....

 

[dajohnson53]

Re: tachometer on Evvy

First thing I'd check are the wires going to the tach. Sounds like a loose connection to me, made worse by high rpm vibrations. Since I'm a pi$$ poor mechanic, I always look for the loose wires first, because that's something I can deal with.