I just bought a used boat, SeaPro SV1900, 90 hp Johnson saltwater 2 stroke oil inject at the engine. Boat has sat for a coupe of months without much use.
I ran the boat this morning. Hour or so and everything looked good. Tach reading 6k running 31, with a 17 pitch.
slowed it down at the ramp just at an idol, and it shuts down. I can not get it restarted.
When I got home I notice a black oil running from the lower unit at the prop. This looks like burnt gear oil. I checked the lower unit and everything is good. Pulled the plugs and they were a little oily but nothing bad. Left it sit couple hours and finally got it to crank. So it must be coming through the exhaust system. Bad oil injection pump? Wrong timing? Never had a 2 stroke do this.
did it kick like it was getting fire
did you pull plug wire and turn over to verify fire to plug
sure fuel filter good
verify fuel to filter
plugs covered in too much oil/mix
etc.
I can stand on the choke, and it will fire. Even got it to run for a couple of minutes. Pulled the plug after that and they were lightly wet. Boat has a separator that I have not pulled off yet. I did fill the tank with 63 gallons of premium fuel and stabilizer.
It could be your ecm, if you run the wrong spark plugs they will fry the ecm. I did that on my 98 ocean runner. Motor was hard to crank then would not crank, put new ecm and correct plugs per the instructions printed on ecm board and it became the best starting engine I ever have had.
Interesting, I will be reading up on the ECM issue. I think mine is just a plain jane carb / ethanol issue. Price back to check the engine, rebuild them, kits is about 550.00.
Side thoughts: What if you pull the VRO system off of it and just mix the fuel in the tank?
My motor was over oiling and fouling plugs left and right. Removed the oil injection and mixed. Never had a problem after that. It’s a little bit of a pain, but you don’t have to worry about a pump failing. Just remember to mix, and use ethanol free gas. That also alleviated a lot of issues!
start with a compression test, but it sounds like you are running rich and what you see is excess unburnt fuel and oil running out the exhaust
6000 rpms is to high for that motor
Had a friend come and help me check several things.
Compression is within 5% of each other
The fuel flow and condition is good.
Spark,
@ 1 less than 1/8" @2 less than 1/16" @3 & 4 could not see any.
Primary going into the coil packs were reading between 1.5 and 3.5 volts, it should be 175-200 on crank, 130-150 running. So deeper we go into the firing system…
OMC 60 DEGREE V6 OPTICAL IGNITION TIPS
A guide to troubleshooting the Johnson/Evinrude
60 Degree V6 Optical ignition (OIS 2000) 1991-2003 model years.
The following information is presented for the use of MASTERTECH’S customers as a courtesy by CDI Electronics. This ignition system produces very high voltages and due care and caution must be practiced in working with it.
The timing wheel cover is a machinery guard. Use care and caution when working on a running engine. MASTERTECH MARINE, CDI Electronics and their respective employees cannot be held responsible for any injuries or damage resulting from the use of, or application of the following data. Please read the final paragraph below.
We have chosen to narrow this troubleshooting guide to the Johnson/Evinrude 60? 6-cylinder ignition (OIS 2000) 1991-2003 model years.
Due to the differences in this ignition system, troubleshooting can be somewhat difficult if you are not familiar with the design. The other Johnson/Evinrude QuikStart ignitions use stator charge coils and a power coil to provide high voltage and power for the QuikStart and rev limiter circuits. They require a timer base for triggering and use separate magnets for the high voltage and triggering the timer base.
The OIS 2000 optical system uses the stator charge coils to provide high voltage for the firing of the ignition coils and a power coil to provide power for the electronics both inside the power pack and inside the sensor. The other QuickStart models will run the engine without the power coil being connected (of course this will burn out the control circuits inside the power pack).
The OIS 2000 ignition has to have the power coil supplying power in order to operate the QuickStart, S.L.O.W., rev limiter, and fire the coils beyond cranking speed. The optical sensor located on the top is fed power from the power pack and sends crankshaft position, cylinder location and direction of rotation back to the power pack.
The pack is smart enough to know not to fire if the engi