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 150 HP Evinrude not reaching RPM´S
#12677309
03/17/18 08:21 PM
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Joined: Mar 2018
Posts: 14
AHF
OP
Green Horn
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OP
Green Horn
Joined: Mar 2018
Posts: 14 |
Hi everyone!
I just bought a Champion 18´6 bass boat With a 1993 150 HP Evinrude Ocean Runner (20" gear case) seated on a 6" jack plate with a 14-1/4 x 23 Alumunium propeller.
The compression test result was 115-120 lb on each cylinder.
The hole shot is excellent ,but the top speed is just 45-47 MPH and just reach 4700 RPm´s
Where should I Start to make changes to reach 5400-5500 RPMS and increase my MPH??
I did Rise the motor with the jack plate 2" but I did not perceived substantial changes
.
Thanks in advance.
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Re: 150 HP Evinrude not reaching RPM´S
[Re: AHF]
#12678144
03/18/18 05:18 PM
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Joined: Dec 2013
Posts: 459
PlanoPaul
Angler
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Angler
Joined: Dec 2013
Posts: 459 |
Sounds like you are running on 5 cylinders. Verify you have spark on all plugs at ALL rpms. If so, then move to the fuel side. If this is a carbureted motor, i’d say check all your main jets and make sure you don’t have a blockage somewhere.
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