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1998 Evinrude 115 with auto (VRO?) oiling running bad.

A

albow

New member
It started running rough/cutting out very badly last year. I decarbonized it, changed plugs, ran it out of fuel twice and only used non-ethanol fuel since, used seafoam a couple times, changed the fuel tubing from the bulb to the motor, and cleaned the fuel filter twice. Nothing I did seemed to improve anything directly. Sometimes it would run fine, other days, it would run like this and possibly not get on plane. It seemed to straighten out the last 2 times I used it last year but when I went out the other day for the first time, it ran fine for 10 minutes to my first fishing hole, then when I recranked, it started doing this crap again. Any ideas? I can't tell if it's fuel starvation or lack of spark. I reckon I need the carbs rebuilt too since it's never been done. http://youtu.be/bZ8euiR_uBk
 
There are ignition problems !!-----Use a timing light to determine if you have bad / intermittent spark on one or more cylinders.
 
racerone said:
There are ignition problems !!-----Use a timing light to determine if you have bad / intermittent spark on one or more cylinders.
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Thanks for the suggestion. I know I'm going to have to get some help or take it to someone. I can't do much more than work on bolt on stuff. I've seen timing lights used but never did it myself and sure can't rebuild the carbs myself.
 
Not sure why you would want to rebuild the carburetors as there is not much that can go wrong with them.--------Trouble shooting with a $40.00 timing light is easy.----You hook it up to #1 and observe the flashing light.-----Steady flash is good spark ----No flash means no spark.--Intermittant flash means spark trouble.---Repeat on #2 #3 and #4
 
Thanks. I've just had so many people suggest that, I guess because it's never been done in 15 years. It sounds like the timing light is no longer a device where you shine it at the timing marks and instead just look at a flahing light on the timing light itself? Or am I wrong? It seems to idle like it always has so I'll probably have to get someone to go with me and try this with a load on the engine.
 
Perhaps you have never used a timing light ?-----A simple trouble shooting tool !-----You can use it to point at a mark , but on your outboard the timing is fixed for the life of the motor.----You use it like a " poor man's oscilloscope " and observe the flashing of the light ! ----This is how it was used yesteryear , how it can be used today and how it will be used in the future !------I see a lot of posts where it says " cleaned / rebuilt the carburetors and the motor still runs the same " on here.---This means that big $ was spent instead of good trouble shooting.
 
So, There is a flashing light on the timing light, as opposed to seeing the mark on the motor since the timing is fixed, and I just need to watch to see if the led or bulb on the timing light itself is regular or not, right? I'll still try to get someone to go out with me to see if it is worse or only acts up with a load. I don't think it's every idled perfectly smooth, or at least for as long as I can remember, but I always thought that was just being a 2 stroke. Sorry I'm so slow to reply. I missed the email saying I had a response. Wish I could just get out in the boat instead of something getting in the way every time.
 
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