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I have a 2009 DF140 that has less than 500 hours on it and was running perfectly until I removed the IAC valve to install on another 2003 DF140 to see if that IAC valve was defective. Since then I have not been able to get the IAC valve to work again on the 2009 unit. My closest Suzuki dealer is 100 plus miles away and wasn`t able to adjust it using a computer any better than I did.
Service manual says to warm it up, turn the key 5 times while idling in neutral and then adjust the pilot air screw to 700-750 rpm`s to set the duty cycle but that doesn`t work. This engine has 1000 less rpm at full throttle than the brand new DF 140 I just installed. I`m wondering if running this engine this way lead to the early failure of the 2003 DF140 that I first thought I better clean the IAC valve on. I likely put 100-200 hours on it and mostly trolling hours since the IAC valve problem 1st started and then had about 3000 hours on it when it started idling rough and a compression showed only 40 psi in one cylinder. Curious if anyone else has had this problem. The 3-1 lamp flashing pattern (and buzzer sounding) only is a problem when the engine is allowed to idle for any length of time while correctly adjusted to 700-750 RPM. Adjusting the air speed higher so that the engine doesn`t idle that low when cold eliminates this signal and alarm. Still need my other 1000 RPM`s at full throttle and the engine will still die when warm if not real careful when going forward to neutral to reverse. Anybody else have this problem?
Service manual says to warm it up, turn the key 5 times while idling in neutral and then adjust the pilot air screw to 700-750 rpm`s to set the duty cycle but that doesn`t work. This engine has 1000 less rpm at full throttle than the brand new DF 140 I just installed. I`m wondering if running this engine this way lead to the early failure of the 2003 DF140 that I first thought I better clean the IAC valve on. I likely put 100-200 hours on it and mostly trolling hours since the IAC valve problem 1st started and then had about 3000 hours on it when it started idling rough and a compression showed only 40 psi in one cylinder. Curious if anyone else has had this problem. The 3-1 lamp flashing pattern (and buzzer sounding) only is a problem when the engine is allowed to idle for any length of time while correctly adjusted to 700-750 RPM. Adjusting the air speed higher so that the engine doesn`t idle that low when cold eliminates this signal and alarm. Still need my other 1000 RPM`s at full throttle and the engine will still die when warm if not real careful when going forward to neutral to reverse. Anybody else have this problem?
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