Need Help

htr2133

Seaman
Joined
Jun 2, 2011
Messages
74
I recently paid $160 to have my older 6hp Johnson Seahorse lower unit serviced, fuel filter cap, gasket, and screen replaced, compression checked, and tank tested because it hadn't been ran in a couple of years. The mechanic placed the motor back in the tank, started, and ran it very easily before I took it home. I was excited to finally have an ob on my boat again.

I took the motor out a week later and it was hard to start. This motor has always started on the 2 or 3 pull but it took dozens of pulls. When it would start it was sluggish to accelerate. I finally got it running ok, but each time it was still hard to start. The carbs were cleaned/rebuilt and adjusted 2 years ago and the plugs were new at that time; the motor ran great after that service so I know at that time things were good. No ethanol fuel has been ran in it since that work was done.

I tried to start the motor again in the back yard today just to see if I could tell anything was wrong with it. I never could get it started. Fuel was steadily dripping out of the carb as well. Even looks like fuel may have been seeping out from the base of the plugs? Could this be caused by a bad fuel hose and fittings? I noticed the bulb doesn't stay hard when running it a week ago and even today in the yard. I pumped the bulb nice and firm w fuel, cranked until I got tired, and would check the bulb 5 min. later and it would be soft and would need to be pumped again. I would much rather buy new fittings or an entire hose than to take the motor in for more work.

The hose and fuel tank is the only variable between the mechanic's tank and my first use of the motor within days of it starting and running fine? What gives? :mad:
 

AlTn

Commander
Joined
Mar 9, 2010
Messages
2,813
Re: Need Help

possibly the variable you mention along with new fuel/oil mix... was the engine transported from the shop to your house on its side or mounted on the transom?..if any old fuel mix was in your tank or lines, then you've pumped it into your carb bowl and that won't help matters
 

htr2133

Seaman
Joined
Jun 2, 2011
Messages
74
Re: Need Help

It was transported to my house in the back of my wife's minivan. It was laying on its side. The whole drive was 15 min. and then it was put on a sawhorse vertically in my shed. Fuel mix is correct and new.
 

htr2133

Seaman
Joined
Jun 2, 2011
Messages
74
Re: Need Help

Also, forgot to mention that the mechanic did disconnect the fuel line while the motor was running in the tank and let it run until it died. I did this as well when I loaded the boat last week.
 

htr2133

Seaman
Joined
Jun 2, 2011
Messages
74
Re: Need Help

Crazy, i let the thing set for over an hour w the fuel line disconnected and just went out and cranked it a few times without even choking the motor and it started and idled/ran great. So, what the heck is going on? It obviously is flooding when I hook up my fuel line but I am not doing anything I shouldn't be doing. Just hooking up the lines, pumping up the bulb, and trying to run the motor.
 

kmarine

Chief Petty Officer
Joined
Nov 5, 2010
Messages
591
Re: Need Help

"[I tried to start the motor again in the back yard today just to see if I could tell anything was wrong with it. I never could get it started. Fuel was steadily dripping out of the carb as well. Even looks like fuel may have been seeping out from the base of the plugs? Could this be caused by a bad fuel hose and fittings? I noticed the bulb doesn't stay hard when running it a week ago and even today in the yard. I pumped the bulb nice and firm w fuel, cranked until I got tired, and would check the bulb 5 min. later and it would be soft and would need to be pumped again."

This shoiuld tell you you need to rebuild carb again. A leaking carb will not run properly. More than likely your engine is flooded with too much fuel. Snowmobile mechanics recomend rebuilding snowmobile carbs every season. Improper fule mixture is the main reason that 2 stroke engines fail from improper lubrication.
 

htr2133

Seaman
Joined
Jun 2, 2011
Messages
74
Re: Need Help

I am starting to realize that I am averaging every 2 years having the carb worked on. I don't understand one thing, my dad and I used this motor every spring and summer for years with almost no maintenance in the 90s other than servicing lower unit. Once we started getting the thing worked on, it seems like every other year we have to do more. I am starting to think this thing is a money pit. I know it is a good motor but dang; I don't know how to rebuild a carb myself and I can't pay to have it done all the time.
 

kmarine

Chief Petty Officer
Joined
Nov 5, 2010
Messages
591
Re: Need Help

Rebuilding a carb on an engine like this is easy if you dont mind getting dirty and understtand which way to turn a wrench. I recomend getting a good repair manual for your engine with the proper step by step direction especially for first timers. IF you have a friend who likes to tinker with motors that helps also. Otherwise you may be better off updating to a newer 4stroke engine, but remember they also have carbs.
 

AlTn

Commander
Joined
Mar 9, 2010
Messages
2,813
Re: Need Help

google..LeeRoysramblings.com...and read his works on the 6 hp. models...as kmarine states a manual and desire can go a long way in maintaining it for a d.i.y. deal
 
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