|
|
|
|
RPM's / Tach question
On 9 Apr 2004 04:18:20 -0700, (basskisser) wrote:
My goodness son, you really are mentally challenged eh?
Let's recap, shall we? The poster said his tach read higher than it
should. I said that it PROBABLY would not be the wiring. YOU said that
it could be the wiring, excessive resistance. Okay, we have a tach
reading higher, I say that it probably isn't the wiring, because it
reads higher. You say it could be the wiring, which could give a false
reading, albeit lower. Now how damned stupid is THAT statement you
made? Are you too drunk to know the difference between a higher
reading than a lower one?
Ok, if we can suspend the insults for a moment, I'll try to address a
possible cause for his problem, as I have had the same issue. Most
tachs have a switch on the back to select between 4, 6 and 8
cylinders. What happened to mine is that the switch became somewhat
intermittent due to moisture condensation, and it caused the tach's
reading to vary by a few hundred RPM. The interesting thing was that
it was more prevalent when it was cool in the morning, and seemed to
stop once the boat had been baking in the sun for a few hours. I
temporarily fixed the problem by turning the switch back and forth
several times, to "clean" the contacts, but the problem eventually
came back. The real fix would be to hard wire the switch in the proper
position, but I haven't done it yet.
Dave
|