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#11751109 - 07/31/16 07:04 AM Yamaha 200 HPDI 2007 - Top End Power
BassLakeFork Offline
Outdoorsman

Registered: 10/30/11
Posts: 167
Chronic problem with my Yamaha 200 HPDI. The motor occasionally loses top end power almost like it is running on 5 cylinders. It was rebuilt due to a blown power head last year and had similar symptoms before it blew.

The last two one-day fishing trips, it started fine, got on plane fine, but would top out with about 20% less power than usual. Both times I stopped short of my planned destination and fished for about an hour. When I started back up it seemed to run normal the rest of the day - with maybe just a time or two where it sputtered at full throttle for just second which was almost unnoticeable.

I have had all the typical filters, fuel lines, and pump ball replaced. One item excluded from the rebuild last year was the high pressure fuel pump. I have heard there are some filters in the high pressure pump also that are difficult or maybe impossible to replace. Any thoughts here?

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#11751162 - 07/31/16 08:06 AM Re: Yamaha 200 HPDI 2007 - Top End Power [Re: BassLakeFork]
gary purdy Offline
TFF Guru

Registered: 05/24/03
Posts: 10907
Loc: Littlefield Tx & Lake A. H. US...
I would have all of the injectors serviced plus the hidden filters soon before you blow it again:
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“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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#11752434 - 07/31/16 10:42 PM Re: Yamaha 200 HPDI 2007 - Top End Power [Re: BassLakeFork]
BassLakeFork Offline
Outdoorsman

Registered: 10/30/11
Posts: 167
Pardon my ignorance, but what is that a picture of?

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#11752528 - 08/01/16 06:16 AM Re: Yamaha 200 HPDI 2007 - Top End Power [Re: BassLakeFork]
gary purdy Offline
TFF Guru

Registered: 05/24/03
Posts: 10907
Loc: Littlefield Tx & Lake A. H. US...
Hidden fuel filters
_________________________
“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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#11753824 - 08/01/16 06:21 PM Re: Yamaha 200 HPDI 2007 - Top End Power [Re: BassLakeFork]
BassLakeFork Offline
Outdoorsman

Registered: 10/30/11
Posts: 167
It that a high pressure pump that the filters are hidden in?

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#11757399 - 08/03/16 06:47 PM Re: Yamaha 200 HPDI 2007 - Top End Power [Re: BassLakeFork]
Fish Killer Online   happy
Big Sexy

Registered: 12/11/04
Posts: 25350
Loc: Weatherford
Yes
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#11758899 - 08/04/16 03:37 PM Re: Yamaha 200 HPDI 2007 - Top End Power [Re: Fish Killer]
RedSkeeter Online   content
Bedazzled

Registered: 04/12/05
Posts: 13584
Loc: Emory, Texas
Originally Posted By: Fish Killer
Yes


Chris have you pulled your pump and replaced them ?? I have never done it, Lance at F&S may have at some point.. I change out all the one's I can get to regularly, and I added a water seperator w 20 bizillion micron filter. Hopefully I can catch any bad stuff before it gets that far, been ok for 13 yrs..
To the OP,
I had some old/ bad gas cause mine to stumble on higher rpm's, it didn't take long to go bad.. Chuck at service marine said it lose's octane power quickly, he gave me a pump to sux it all out, and into my truck. Ran fine in the truck's hemi.. Justsay'n
New plugs, and fresh gas, boat runs like a scalded dog... grin
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#11759384 - 08/04/16 08:25 PM Re: Yamaha 200 HPDI 2007 - Top End Power [Re: BassLakeFork]
BassLakeFork Offline
Outdoorsman

Registered: 10/30/11
Posts: 167
Thanks, yes I have a large gas tank and tend to only add about once a month. Maybe I should start running it closer.

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