Suzuki 1987 85 hp oil injected outboard

chastings

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Jun 14, 2010
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I have a 1987 85hp Suzuki oil injected outboard and it is injecting to much oil. So i am trying to find the oil to gas ratio to just mix the oil with the gas. Any ideas?
 

deejaycee_2000

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Mar 28, 2006
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3,447
Re: Suzuki 1987 85 hp oil injected outboard

50:1 ..... how sure are you it is not getting enough oil? These oil injection systems are pretty good ......
 

ski65nut

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Sep 14, 2007
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Re: Suzuki 1987 85 hp oil injected outboard

would anyone have any input regarding bypassing the VRO system on a 1987DT85 and adding the oil directly into the gas tank? I believe the it may be fouling my plugs when I run through a 5mph zone for too long.

The boat is new to us, she runs great out in the bay, turning 5k WOT.... just as I get close to my dock she stalls out and won't restart. I don't believe it is overheating because it is cool to the touch. Any idea would be appreciated.

Maybe it may just be allergic to going home!

Thanks for any input
Paul
 
Last edited:

ski65nut

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Joined
Sep 14, 2007
Messages
13
Re: Suzuki 1987 85 hp oil injected outboard

would anyone have any input regarding bypassing the VRO system on a 1987DT85 and adding the oil directly into the gas tank? I believe the it may be fouling my plugs when I run through a 5mph zone for too long.

The boat is new to us, she runs great out in the bay, turning 5k WOT.... just as I get close to my dock she stalls out and won't restart. I don't believe it is overheating because it is cool to the touch. Any idea would be appreciated.

Maybe it may just be allergic to going home!

Thanks for any input
Paul
 

eli_lilly

Chief Petty Officer
Joined
Dec 22, 2005
Messages
435
Re: Suzuki 1987 85 hp oil injected outboard

Maybe the carbs need rebuilding.

-E
 

dazk14

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Jul 22, 2008
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966
Re: Suzuki 1987 85 hp oil injected outboard

Is it running too cool? Loading up is a symptom of running too cool.
 

ski65nut

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Sep 14, 2007
Messages
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Re: Suzuki 1987 85 hp oil injected outboard

that may be it, but how do I get it to run hotter? Change the thermostat?
 

dazk14

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Joined
Jul 22, 2008
Messages
966
Re: Suzuki 1987 85 hp oil injected outboard

Yes. You can pull out the existing and test. There may not even be one in there.
 

99yam40

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Sep 7, 2008
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Re: Suzuki 1987 85 hp oil injected outboard

My vote is for carb cleaning
 

chastings

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Jun 14, 2010
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Re: Suzuki 1987 85 hp oil injected outboard

I'm not positive but I believe the spark plugs were getting flooded and causing the boat to stall. But it hasn't stalled in a while so i think i'm good for now.
 

ski65nut

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Sep 14, 2007
Messages
13
Re: Suzuki 1987 85 hp oil injected outboard

thanks for the help...I had the carbs cleaned and my problems are gone !!!
 

axolotl

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Mar 21, 2011
Messages
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Re: Suzuki 1987 85 hp oil injected outboard

I have a 1987 85hp Suzuki oil injected outboard and it is injecting to much oil. So i am trying to find the oil to gas ratio to just mix the oil with the gas. Any ideas?

Not 100% sure, but I remember smaller Suzukis operating with a 100 to 1 oil ratio. Probably the bigger ones would need 100 to 1 for idling and 50 to 1 for WOT operation.
 
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