#2410059 - 06/05/11 06:30 PM
Re: Boat motor question?
[Re: Rackseeker]
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dr
10 Point
Registered: 02/24/03
Posts: 3454
Loc: USA
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Sounds like a fuel starvation problem, but I wouldn't rule out an electrical problem. Are you sure the battery is good? A dead cell in a battery, or bad battery cable connections might allow it to start, but not run very well. Computerized ignitions won't work well ,if they don't get at least 12 volts, and should be about 13.8 across the battery with the engine running, if the alternator is working properly.
I had an electrical problem on a 150 hp outboard once that even stumped an experienced marine mechanic. The motor would run fine for about an hour, then would start surging, and losing power. He replaced the ignition power pack which didn't fix the problem. I later found out that the deep cycle cranking battery was the problem. The deep cycle wasn't capable of supplying the current the engine needed. I got a new battery, and never had any more trouble.
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I spent most of my money on Huntin and fishin, the rest I squandered.
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#2410068 - 06/05/11 06:41 PM
Re: Boat motor question?
[Re: dr]
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dr
10 Point
Registered: 02/24/03
Posts: 3454
Loc: USA
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And, most mercs have a fuel filter where the line connects to the engine, it might be clogged.
_________________________
I spent most of my money on Huntin and fishin, the rest I squandered.
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#2410093 - 06/05/11 07:27 PM
Re: Boat motor question?
[Re: mike243]
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7mm08
10 Point
Registered: 09/12/07
Posts: 3878
Loc: In a river hopefully!
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x2
friend of mine had the same problem with a 150 Suzuki right out of the box. Lots of calls later and back to the shop they finally replaced it and no more problems.....good luck
_________________________
If gun control was truly about "protecting the public", then the government would first outlaw and confiscate tobacco products! 600,000 Deaths per year!
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#2410098 - 06/05/11 07:38 PM
Re: Boat motor question?
[Re: 7mm08]
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vanleerbuckbuster
8 Point
Registered: 10/04/09
Posts: 1138
Loc: Dickson, Tennessee
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install one of those clear inline fuel filters above the primer bulb to see what kind of flow your getting. this will rule out the fuel pump. if the fuel pump checks out ok then do a spark test. this will rule out any ignition problems. if your getting good spark then order a rebuild kit for the carbs. its either fuel or ignition related so thats what you should focus on
_________________________
i told my wife that i would only be fishing 1/2 a day. i assumed she new 12 hours was 1/2 a day!
born free
Thats gun lotion
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#2410114 - 06/05/11 08:07 PM
Re: Boat motor question?
[Re: vanleerbuckbuster]
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mike243
14 Point
Registered: 09/06/06
Posts: 9812
Loc: east tn
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{ Tried pumping the primer bulb while after planing out when the surging started and it fixed the problem as long as I pumped it }
this is what he posted,here is my summary,lack of fuel pressure to carbs or restricted in the carb,fuel pumps use to be cheap.gas is clear & without a flow meter looking at a clear fuel filter would be like looking at a stream,no way to measure flow
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prayers sent for our friends in need every day
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#2410117 - 06/05/11 08:14 PM
Re: Boat motor question?
[Re: mike243]
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vanleerbuckbuster
8 Point
Registered: 10/04/09
Posts: 1138
Loc: Dickson, Tennessee
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2 stroke gas is not clear
_________________________
i told my wife that i would only be fishing 1/2 a day. i assumed she new 12 hours was 1/2 a day!
born free
Thats gun lotion
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#2410243 - 06/06/11 05:37 AM
Re: Boat motor question?
[Re: vanleerbuckbuster]
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Paul Burns
TnDeer Old Timer
8 Point
Registered: 03/28/99
Posts: 1788
Loc: Westport--- Carroll County Tn
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I had exact same problem. bet he finds it is connection of fuel line or primer bulb related.
Let us know when you get it fixed.
_________________________
Paul Westport-Yuma Tn
On the banks of the Big Sandy River and Maple Creek
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#2416172 - 06/13/11 09:35 AM
Re: Boat motor question?
[Re: Paul Burns]
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Spike
TnDeer Old Timer
10 Point
Registered: 05/31/99
Posts: 2699
Loc: Oakland, TN. USA
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Well what is the verdict?
_________________________
If the government wants my guns, I will give them the bullets first.
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#2416197 - 06/13/11 10:38 AM
Re: Boat motor question?
[Re: Rackseeker]
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Living2Hunt
8 Point
Registered: 12/17/07
Posts: 1299
Loc: TN
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I have the same motor and had the same problem. Twice! I work for a marine company and this is where I would start. First, make sure nothing is in the fuel tank. Any piece if debris can stop up the pick up tube. If that's not it, rebuild the fuel pump. That motor has a diafram fuel pump, they wear out. Rebuil it. It cheap and easy. U should be good to go then.
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#2416305 - 06/13/11 01:03 PM
Re: Boat motor question?
[Re: tndrbstr]
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Slaughter-06
14 Point
Registered: 05/03/01
Posts: 7958
Loc: Dyersburg,Tn.
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Mine did the same thing ( 25 Merc ) I would try a new gas line and bulb first I went out and bought a new tank fixed it right up! Tank and line was not much more than what the line was going to cost me.
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