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Need advice, Optimax 175 dies when idiling.
#12137159
03/12/17 01:27 PM
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Joined: Dec 2007
Posts: 158
Ricky1
OP
Outdoorsman
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OP
Outdoorsman
Joined: Dec 2007
Posts: 158 |
Just got the engine back from shop which is 100 miles away but problem still exists. Thought I might get some ideas to check. 2014 Optimax 175 with 85 hours. Problem is the engine dies when idling. Will not re-start unless bulb is pumped up, it gets soft when it dies. Sometime when I try to plane off, the engine stalls then picks up and planes. Engine runs fine at higher rpm's with no issues. No gas smell in storage areas or sump so I assume the hoses and bulb is fine. Any input or ideas to check would be appreciated. Ricky
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Re: Need advice, Optimax 175 dies when idiling.
[Re: Ricky1]
#12137231
03/12/17 02:15 PM
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Joined: Dec 2014
Posts: 1,665
Muzzlebrake
Extreme Angler
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Extreme Angler
Joined: Dec 2014
Posts: 1,665 |
Pump up bulb and let sit for a while without starting the motor. If the bulb goes soft it may have a bad check valve. Replace the bulb. Cheap item. Other than that I have no idea?
From Genesis: "And God promised men that good and obedient wives would be found in all corners of the earth."
Then He made the earth round...and He laughed and laughed and laughed!
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Re: Need advice, Optimax 175 dies when idiling.
[Re: Ricky1]
#12137484
03/12/17 05:09 PM
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Joined: Oct 2016
Posts: 435
Fisherdad58
Angler
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Angler
Joined: Oct 2016
Posts: 435 |
If you can keep it running by pumping the bulb it could be a bad fuel pump.
"Be as straight as you can be and as crooked as you have to be, for what's right"
Psalm 8
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Re: Need advice, Optimax 175 dies when idiling.
[Re: Ricky1]
#12137527
03/12/17 05:32 PM
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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 |
I have seen a problem with some of the electric supply pumps.
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: Need advice, Optimax 175 dies when idiling.
[Re: Ricky1]
#12137662
03/12/17 07:57 PM
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Joined: Jun 2004
Posts: 1,509
OPTI
Extreme Angler
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Extreme Angler
Joined: Jun 2004
Posts: 1,509 |
Could be pulse driven fuel pump or the electric low pressure fuel pump that keeps the vapor separator tank full where the high pressure pump in located or like earlier mentioned primer bulb or have even seen a stuck or sticking anti-siphoning valve cause this problem.....OPTI
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Re: Need advice, Optimax 175 dies when idiling.
[Re: OPTI]
#12138323
03/13/17 11:21 AM
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Joined: Dec 2007
Posts: 158
Ricky1
OP
Outdoorsman
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OP
Outdoorsman
Joined: Dec 2007
Posts: 158 |
Thank you all for the suggestions. I will be home this Wednesday and will check it out. Ricky
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Re: Need advice, Optimax 175 dies when idiling.
[Re: Ricky1]
#12152765
03/22/17 03:11 PM
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Joined: Dec 2007
Posts: 158
Ricky1
OP
Outdoorsman
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OP
Outdoorsman
Joined: Dec 2007
Posts: 158 |
Guys, Just got time to inspect the engine. I found one of the top lines from the VST that goes to the cover on top of the engine was not attached. I plugged the line in and changed the bulb, engine runs perfect again. Thanks for all the replies. Ricky
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Re: Need advice, Optimax 175 dies when idiling.
[Re: Ricky1]
#12153861
03/23/17 01:59 AM
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Joined: Jun 2004
Posts: 1,509
OPTI
Extreme Angler
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Extreme Angler
Joined: Jun 2004
Posts: 1,509 |
It was more than likely the primer bulb that fixed the problem the line on top of VST is just the vent line for the VST Glad it running good for you....Opti
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