texasfishingforum.com logo
Main Menu
Advertisement
Affiliates
Advertisement
Newest Members
Got2fishEd, CrazyCajun58, RoyG, Grungy008, Scrydogg
109295 Registered Users
Top Posters(All Time)
TexDawg 90,126
hopalong 78,912
Pilothawk 77,551
John175® 69,861
JDavis7873® 67,393
Derek 🐝 61,691
Tritonman 58,400
Mark Perry 54,838
LoneStarSon® 54,819
facebook
Forum Statistics
Forums60
Topics777,413
Posts13,003,837
Members109,295
Most Online36,273
Jan 23rd, 2013
Print Thread
Motor cuts out 90 hp Mercury 4 stroke #12817526
07/05/18 10:52 PM
07/05/18 10:52 PM
Joined: Feb 2003
Posts: 1,684
College Station, Texas, USA
O
obiewan57 Offline OP
Extreme Angler
obiewan57  Offline OP
Extreme Angler
O

Joined: Feb 2003
Posts: 1,684
College Station, Texas, USA
I put it in the shop... had service done, oil, oil filter, lower unit serviced, fuel filter, plugs checked.
Computer hooked up with no codes showing up.

Burned fuel down to 1/4 tank, filled tank, in order to have as few
Additives in gas as possible...had recently ran Seafoam and Heet
In previous couple of tanks.

Today would run about 3 miles at 30+ mph when motor would start cutting out,
If throttle increased it would cut out worse, if reduced to 18 mph, no cutting out...or, if throttle moved to
Neutral for just 10 seconds, motor would run like 3 more miles before cutting out...move to neutral
Again for 10 seconds, good for another long run.

Emptied water seperater filter before last fill up, could see about three tiny drops of water
In jar. So, added one bottle of Heet to current
Tank of fuel.


Weldon Kirk
www.FISHTALES-GUIDESERVICE.COM LET'S GO FISHING
Davy Crockett said, Be sure you are right, then go ahead!

Re: Motor cuts out 90 hp Mercury 4 stroke [Re: obiewan57] #12817618
07/06/18 12:32 AM
07/06/18 12:32 AM
Joined: Aug 2015
Posts: 9
Texas, Louisiana
L
lil minner Offline
Green Horn
lil minner  Offline
Green Horn
L

Joined: Aug 2015
Posts: 9
Texas, Louisiana
Try checking the fuel lines. Start at the tank and work your way toward the engine. I have seen pin hole leaks in every part of the fuel line and they all cause similar problems. It's usually the primer bulb or the quick connect fittings. Hope this helps.


The only rules that matter are Murphy's.
Re: Motor cuts out 90 hp Mercury 4 stroke [Re: obiewan57] #12817678
07/06/18 01:20 AM
07/06/18 01:20 AM
Joined: Feb 2003
Posts: 1,684
College Station, Texas, USA
O
obiewan57 Offline OP
Extreme Angler
obiewan57  Offline OP
Extreme Angler
O

Joined: Feb 2003
Posts: 1,684
College Station, Texas, USA
Forgot to mention there is a 19 gallon tank and I run through 12-15
Gallons per week

Three year old motor

Last edited by obiewan57; 07/06/18 01:21 AM.

Weldon Kirk
www.FISHTALES-GUIDESERVICE.COM LET'S GO FISHING
Davy Crockett said, Be sure you are right, then go ahead!

Re: Motor cuts out 90 hp Mercury 4 stroke [Re: obiewan57] #12817707
07/06/18 01:45 AM
07/06/18 01:45 AM
Joined: Mar 2014
Posts: 960
T
Topwater2 Offline
Pro Angler
Topwater2  Offline
Pro Angler
T

Joined: Mar 2014
Posts: 960
Sounds like a fuel line problem to me. Maybe collapsing inside, a pin hole or...... just not picking up enough fuel at high RPM's. Hope its a simple fix.


FishKen
Re: Motor cuts out 90 hp Mercury 4 stroke [Re: obiewan57] #12817888
07/06/18 04:08 AM
07/06/18 04:08 AM
Joined: May 2003
Posts: 11,496
Littlefield Tx & Lake A. H. US...
gary purdy Offline
TFF Guru
gary purdy  Offline
TFF Guru

Joined: May 2003
Posts: 11,496
Littlefield Tx & Lake A. H. US...
Check the fuel line going the coupler at the front of the cowling. Have been seeing a lot of problems with the grey fuel line on these Mercs. The 4 strokes are also having a lot of problems with the float in the fuel supply module. Some it is necessary to replace the complete fuel module. Have also had problems with the fuel demand valve between the tank and the motor.


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
Re: Motor cuts out 90 hp Mercury 4 stroke [Re: obiewan57] #12818508
07/06/18 07:08 PM
07/06/18 07:08 PM
Joined: Feb 2003
Posts: 1,684
College Station, Texas, USA
O
obiewan57 Offline OP
Extreme Angler
obiewan57  Offline OP
Extreme Angler
O

Joined: Feb 2003
Posts: 1,684
College Station, Texas, USA
Today

Ran 3 miles at 30+ mph
Fished
Ran 2 miles
Fished
Ran 2 miles
Fished
Ran 2 miles fished
Ran 3 miles to marina

Never cut out


Weldon Kirk
www.FISHTALES-GUIDESERVICE.COM LET'S GO FISHING
Davy Crockett said, Be sure you are right, then go ahead!

Re: Motor cuts out 90 hp Mercury 4 stroke [Re: obiewan57] #12828837
07/15/18 11:18 AM
07/15/18 11:18 AM
Joined: Feb 2003
Posts: 1,684
College Station, Texas, USA
O
obiewan57 Offline OP
Extreme Angler
obiewan57  Offline OP
Extreme Angler
O

Joined: Feb 2003
Posts: 1,684
College Station, Texas, USA
Thanks to everyone for your help.

I ended up cutting out until I used gas level down to less than a quarter.
Filling tank diluted any fuel additives I might had built up in the tank.
Then, only additive I put in was Heet.

I then ran three days in a row with no motor problems. Added more gas to tank and have now run three more days with no problem. Hopefully fuel was the only problem.

Thanks again


Weldon Kirk
www.FISHTALES-GUIDESERVICE.COM LET'S GO FISHING
Davy Crockett said, Be sure you are right, then go ahead!

Re: Motor cuts out 90 hp Mercury 4 stroke [Re: obiewan57] #12857105
08/08/18 02:46 AM
08/08/18 02:46 AM
Joined: Jul 2009
Posts: 455
Austin
S
Skunked Again Fishing Offline
Angler
Skunked Again Fishing  Offline
Angler
S

Joined: Jul 2009
Posts: 455
Austin
Your fuel pump could be going out. Low fuel demand, no issue. High demand, cuts out. Intermittent for months and months. Replaced fuel pump, problem gone.
Tim


One 10-pounder is better than ten 1-pounders
YouTube Channel: www.youtube.com/SkunkedAgain
Previous Thread
Index
Next Thread


© 1998-2018 OUTDOOR SITES NETWORK all rights reserved USA and Worldwide
UBB.threads™ 7.6.2