87 Johnson 225 idle

[BillRS]

A problem has developed with my 87 Johnson 225. It will start right up, take you offshore to your fishing spot, then the trouble begins..<br /><br />After fishing for a little while, when you try to start it up and leave it is very hard starting. You must choke it and restart it many times. It will finally start and then the warning horn will sound. You must then run to the back, pump the primer ball 10-15 times. By then the motor stalls out. You must repeat this process several times to get it to idle at all. Once it will finally idle, when you put it into gear it will stall. You must start it, rev it up and very quickly put it into gear and apply WOT to mutter up onto a plane. From then on it will run and idle fine. So the problem is isolated to being off for 30 min or more and trying to restart.<br /><br />I have rebuilt the carbs, replaced the fuel line, replaced the fuel pump and fuel filter, replaced the primer ball. <br /><br />I am out of ideas. Thanks in advance for any help given<br /><br />Bill

 

[reddog23]

Re: 87 Johnson 225 idle

What does the warning horn do? Steady tone or pulse? short or long pulses?<br />Reddog

 

[Dhadley]

Re: 87 Johnson 225 idle

What spark plugs and what fuel? Make sure you use a OE bulb with one way valves.<br /><br />Be specific!

 

[BillRS]

Re: 87 Johnson 225 idle

Sorry, I meant to put that. The buzzer sounds steady until you pump the primer bulb, then it goes away.<br /><br />Spark plugs- Champion QL77JC4<br />Oil- West Marine<br />Fuel- 87 octane Texaco<br />Primer bulb- Tempo (but looking for a Quicksilver)<br />50:1 mix

 

[Dhadley]

Re: 87 Johnson 225 idle

Spark plugs, fuel and mix are good. You may want to re-think the oil. Get a bulb from the guys at Coastal Marine. The E/J bulbs have the valves. When youre there tell Fred I said hello and tell David to get busy. Lol!<br /><br />Lets try the new bulb and go from there.

 

[ehaskins]

Re: 87 Johnson 225 idle

dhadley,<br /><br /> What should my fuel vacuum be on a 1990 200HP Evinrude ?? I am seeing 3inches tapped in at restriction sensor and 1 to 2 inches at top of fuel cell. So I am picking up an inch of vacuum in a 10ft 3/8 line thru a Water Seperator. Sometimes when tapped into the sensor side I will see vacuum raise to 6inches and I compress bulb once and it drops and stays down???<br /><br />Eric

 

[BillRS]

Re: 87 Johnson 225 idle

Well, I got a OMC bulb from Coastal Marine. I went for a quick river test, and I didn't seem to have a poroblem. Also, the guys there told me to mount the primer bulb vertically, with as much fuel line pointing up as possible. This apparently uses the fuel in the line to put pressure on the one way valve, forcing it to remain shut. The true test will be Sunday for some offshore fishing.<br />Thanks for the help.<br />Bill

 

[Dhadley]

Re: 87 Johnson 225 idle

Did you make sure David was busy? Lol!<br /><br />They really are pretty sharp guys!