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Jan 23rd, 2013
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1982 150hp johnson HELP #13515992 04/13/20 04:48 PM
Joined: May 2014
Posts: 259
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spinnerbait72 Offline OP
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Posts: 259
bogging down at Full Throttle will only run about 2,000 RPMs at Full Throttle
rebuilt carburetors in both fuel pumps no change


2009 Triton 17explorer 90 Optimax
Lowrance HDS 8 & 5 w/LSS2

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Re: 1982 150hp johnson HELP [Re: spinnerbait72] #13516107 04/13/20 05:57 PM
Joined: Jan 2017
Posts: 1,435
Beak47 Online Content
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Joined: Jan 2017
Posts: 1,435
OEM or Marpac fuel line and bulb- not Attwood from Wally World. Good place to start or hopefully finish.


Hardcore Texan
Re: 1982 150hp johnson HELP [Re: spinnerbait72] #13516110 04/13/20 06:00 PM
Joined: Jul 2010
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boatman025 Offline
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Reed gaskets are the VRO fuel pump dyeing


Hughes Marine
3855 Osage Lane
Wylie ,Texas
Re: 1982 150hp johnson HELP [Re: spinnerbait72] #13516126 04/13/20 06:08 PM
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spinnerbait72 Offline OP
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Replaced gaskets on both pumps and fuel line and buld replaced aswell not atwood was marine raider brand


2009 Triton 17explorer 90 Optimax
Lowrance HDS 8 & 5 w/LSS2

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Re: 1982 150hp johnson HELP [Re: spinnerbait72] #13516461 04/13/20 10:06 PM
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boatwhisperer Offline
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make sure the timer base is not sticking when you advance the throttle. carbs are opening but the timerbase under the flywheel is not advancing the spark advance


boatwhisperer
Re: 1982 150hp johnson HELP [Re: spinnerbait72] #13525551 04/19/20 11:41 PM
Joined: Feb 2020
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aggietom04 Offline
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Just had this issue on an ‘83 90HP evinrude. Rebuilt the carbs, all new fuel lines and still same problem. Turned out it was a small piece of fuel line in the port where the needle and float go. I removed all the ports I could and cleaned. Make sure you’ve removed them ALL and go through it. Would have never found it if I didn’t remove the brass port.

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