1990 150 GT johnson hard to start

J

jkboating

Recruit
Joined
Aug 11, 2010
Messages
2
Help !!!, I have a 1990 150 GT johnson V6 outboard that hard to start even the engine it warm some times it took about 20 short crank for it to start , New spark plugs and just rebuilt carb two week ago
Thank you
 
nymack66

nymack66

Petty Officer 1st Class
Joined
Aug 5, 2009
Messages
356
Re: 1990 150 GT johnson hard to start

Please post more details or history of this issue. Example did it ever started correctly? What or when this issue showed up?
As for Plugs, brand and gap will help!
Do a spark test, compression test and anyone here will at lease have some ideas.
Outboard troubleshooting is 40 or 50 % just looking at it and observation whilst running or not !
 
D

d.boat

Chief Petty Officer
Joined
Sep 19, 2008
Messages
520
Re: 1990 150 GT johnson hard to start

In addition to what nymack66 wrote, describe your current starting procedure, don't omit any detail. Sometimes these engines require a "ritual" which is very precise, but works.
 
E

emdsapmgr

Supreme Mariner
Joined
Dec 9, 2005
Messages
11,551
Re: 1990 150 GT johnson hard to start

What does the fuel hose primer bulb feel like when it won't start? Have you done a compression check lately?
 
J

jkboating

Recruit
Joined
Aug 11, 2010
Messages
2
Re: 1990 150 GT johnson hard to start

The primer bulb is hard , No i did not do compression check , I try to start it again yesterday it took one crank to started and took it out to the lake two cranks to started , did some fishing for about 1/2 hours and try to start it again took one crank started , stay fishing another hour and try to start took5 short crank to started. at this point i'm not sure what to do with it , I'm going to let it sets allday and will try to start it this evening
Thanks
 
clevecan

clevecan

Petty Officer 2nd Class
Joined
Aug 25, 2008
Messages
130
Re: 1990 150 GT johnson hard to start

what should the compression be? I have a 1990 GT 150 that has 90 lb's on all 6 cyl's not trying to take over the thread just asking as i'm sure he would like to know as well...
thanks
 
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