GT 150 V6 Runs then wont restart

C

carbonlaced

Recruit
Joined
Jul 7, 2008
Messages
5
Hi Everyone,

Looking for possible ideas. I bought a Ranger with 85 Johnson GT 150 V6. I had to replace the plugs the other day because they seemed to be gummed up and sticky. The boat normally starts fine and runs like a champ.

The other day on the water I was running normal and clean but bringing it in to dock at low RPM it stalls and I have trouble re-starting it. It almost acts like its flooded but doesnt always smell like gas.

Eventually after 15 minutes or so I can restart the boat and go through the same cycle and then it wont restart again. Frustrating since I'm fishing.

Any ideas?
 
tashasdaddy

tashasdaddy

Honorary Moderator Emeritus
Joined
Nov 11, 2005
Messages
51,019
Re: GT 150 V6 Runs then wont restart

what history do you have. what have you check?
 
HighTrim

HighTrim

Supreme Mariner
Joined
Jun 21, 2007
Messages
10,486
Re: GT 150 V6 Runs then wont restart

I would start by checking the spark and compression then go from there.

The spark should jump the gap on an inline tester a good 7/16 of an inch, and the compression should be around 100 psi, but more important, within 10% between cylinders.

Let us know what you find.
 
C

carbonlaced

Recruit
Joined
Jul 7, 2008
Messages
5
Re: GT 150 V6 Runs then wont restart

Thanks,

I'm new to outboards so I havent checked much yet. My original thoughts are that the carbs are dirty or something since the plugs were dirty when I took them out. My other thoughts is it could be something like a dirty fuel filter (despite looking new) or I need a new fuel/water seperator.

I can check the compression if thats the best idea to start with. Are there a lot of cylinder problems with these engines?
 
C

carbonlaced

Recruit
Joined
Jul 7, 2008
Messages
5
Re: GT 150 V6 Runs then wont restart

Changed the fuel/water seperator which looked fine. I changed the spark plug wires which seemed to solve the problem; the plugs weren't getting enough current to them which was causing low spark and flooding in the chambers.
 
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