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Dec 30th, 2023
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 Engine lost prime
#12322906
07/04/17 01:49 AM
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Joined: Mar 2012
Posts: 223
j791
OP
Outdoorsman
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OP
Outdoorsman
Joined: Mar 2012
Posts: 223 |
I was running at 5000rpms when the motor abruptly shut off. I went to the prime bulb and noticed it was not holding the prime. The fuel gauge shows over half a tank. What should I trouble shoot first?
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Re: Engine lost prime
[Re: j791]
#12322927
07/04/17 02:11 AM
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Joined: Aug 2016
Posts: 601
Tc24
Pro Angler
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Pro Angler
Joined: Aug 2016
Posts: 601 |
If it stays running as long as you keep pumping the bulb I would suspect air is getting in somewhere between the gas cap & the carbs. I had to replace my bulb earlier this year due to it going bad..
Last edited by Tc24; 07/04/17 02:13 AM.
1998 Pro Gator 160V
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Re: Engine lost prime
[Re: j791]
#12322965
07/04/17 02:31 AM
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Joined: Mar 2012
Posts: 223
j791
OP
Outdoorsman
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OP
Outdoorsman
Joined: Mar 2012
Posts: 223 |
[url=[URL=http://s494.photobucket.com/user/j79129/media/IMG_9177_zpswzl2w6ey.jpg.html]  [/url]]Sucking sound[/url] When I press the primer bulb, I hear and feel a sucking sound coming from the black hose in the pic
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Re: Engine lost prime
[Re: j791]
#12323029
07/04/17 03:21 AM
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Joined: Aug 2003
Posts: 363
CADD
Angler
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Angler
Joined: Aug 2003
Posts: 363 |
It's probably a bad diaphragm in the fuel pump. The picture looks like a mechanical fuel pump (they operate on crankcase vacuum)
2001 Pathfinder 2200V 150Vmax HDPI
2015 Diablo Amigo (Sand Fleck)
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Re: Engine lost prime
[Re: j791]
#12323275
07/04/17 12:52 PM
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Joined: Mar 2012
Posts: 223
j791
OP
Outdoorsman
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OP
Outdoorsman
Joined: Mar 2012
Posts: 223 |
Thanks, it's really disappointing considering this is a new 2016 motor with very few hours.
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Re: Engine lost prime
[Re: j791]
#12323495
07/04/17 03:53 PM
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Joined: Mar 2012
Posts: 223
j791
OP
Outdoorsman
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OP
Outdoorsman
Joined: Mar 2012
Posts: 223 |
I took off the water fuel separator filter and noticed the rubber seal had become dislodged from the top of the filter and came off? Has anyone had issues with the Yamaha filters?
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