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 ? about tach - 99 Merc 225 EFI
#9260253
08/26/13 01:44 AM
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Joined: Jan 2004
Posts: 2,439
rb7764
OP
Extreme Angler
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OP
Extreme Angler
Joined: Jan 2004
Posts: 2,439 |
My tach has always worked perfectly. This past weekend, it was reading at about a bias of +30% or so. I.E. - with motor off, tach shows 0. Normal idle is about 700 but now shows 1000. Boat normally planes out at about 3000, but now it shows 4000 when the bow falls. Normal max RPM is 5800, but now it reads over 7K. I checked the prop hub and it is good. My GPS said the boat was traveling at the speeds I am used to and the boat/motor felt fine. There was no slipping, erratic running, etc.
Any ideas?
Thanks,
Ron
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Re: ? about tach - 99 Merc 225 EFI
[Re: rb7764]
#9260814
08/26/13 11:16 AM
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Joined: May 2003
Posts: 11,586
gary purdy
TFF Guru
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TFF Guru
Joined: May 2003
Posts: 11,586 |
First thing I would do is re-set the poles on the tach. Small plain screwdriver, push in, turn left, turn right, turn back to original position and release. Other than that could be a regulator.
The world will not be destroyed by those who do evil, but by those who watch them without doing anything. Remember what He has done and remember that He is not done yet!-- GOD IS GOOD
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Re: ? about tach - 99 Merc 225 EFI
[Re: rb7764]
#9260880
08/26/13 12:08 PM
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Joined: Jun 2012
Posts: 95
coachb
Outdoorsman
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Outdoorsman
Joined: Jun 2012
Posts: 95 |
2000 225 Mercury. Motor has always ran perfect. Yesterday it died at the ramp and didn't want to start. Would start if you choked it but wouldn't keep running. Gas problem?
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Re: ? about tach - 99 Merc 225 EFI
[Re: gary purdy]
#9261186
08/26/13 02:46 PM
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Joined: Jan 2004
Posts: 2,439
rb7764
OP
Extreme Angler
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OP
Extreme Angler
Joined: Jan 2004
Posts: 2,439 |
Thanks Gary. I will try that this evening.
Ron
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