Johnson model J115FTLECS 115hp 2 stroke 2 cylinders not firing

[Bmw201030]

Ive got 2 cylinders that are not firing, same side of the engine. I've checked for spark and it's good (also changed out coils, cables and plugs) I'm getting fuel I believe because it's leaking out of the air intake and unburned oil gas mixture is coming out of the exhaust. It seems to run fine on the 2 cylinders that are working, idles and revs up. Any help would be appreciated.

 

[saltchuckmatt]

Ive got 2 cylinders that are not firing, same side of the engine. I've checked for spark and it's good (also changed out coils, cables and plugs) I'm getting fuel I believe because it's leaking out of the air intake and unburned oil gas mixture is coming out of the exhaust. It seems to run fine on the 2 cylinders that are working, idles and revs up. Any help would be appreciated.

Tough one but I will attempt to offer suggestions. When you checked for spark did you test for good spark? You need a tester that test how far it jumps. Second thing, years ago I bought a used 90 from a dealer. When I took it out it seemed sluggish. Luckily as I drove it around all of a sudden it took off like a bat out of hell. Eventually he went back to sluggish mode. To make a long story short after taking it back to the dealer (that started out bad) one of the mechanics overheard me with the salesman and said they had a few of those engines have the main jets come loose. Conclusion, he tightened them up and I used that motor for 10 years or so. Not sure if that is it but if it's not spark it sure sounds like it's flooding. Another thing, better check compression because it just might be toast.

 

[racerone]

saltchuck.-----This is a fuel injected motor !----No carburetors.

 

[Bmw201030]

Correct this is a fuel injected engine. I have just tested compression and it's all good.
Cylinder 1 132
Cylinder 2 134
Cylinder 3 131
Cylinder 4 133

 

[racerone]

You have the wires from EMM / ECU going to the correct coils ?

 

[Bmw201030]

I've had the boat for 22 years.....it was running fine up until a few weeks ago. The wires haven't been messed with so they should be fine.

 

[racerone]

Sorry ----I missed the part about owning it for 22 years in post #1-----Good luck with it.

 

[Bmw201030]

No I appreciate any information.....I'm by no means an outboard expert so I'm sure I have omitted some useful information. I know these engines have been problematic and if I can fix this inexpensively I'll keep it, otherwise it might be time for a new one.

 

[saltchuckmatt]

No I appreciate any information.....I'm by no means an outboard expert so I'm sure I have omitted some useful information. I know these engines have been problematic and if I can fix this inexpensively I'll keep it, otherwise it might be time for a new one.

Sometimes outboards can be tough. You have excellent compression so taking it into a professional mechanic, In my opinion, should be well worth it.

 

[flyingscott]

I will be the bearer of bad news for you. Your motor was obsolete pretty much within 5 yrs of being built. You need to find the software and correct cables for a first Gen Ficht. Parts availability is pretty much non existent. Good luck even finding a Mechanic to look at it. When BRP bought OMC it basically disowned the whole Ficht line. Find a factory manual for it at Ken Cook printing they have the OMC factory service manuals. And Good luck with your motor.

 

[Crosbyman]

FICHT .. pre ETECS likely fire their coils by grounding the ignition coils...... some model it seems actually feed current to the coils and the EMM breaking that current fires the coil due to the collapse of the primary magnetic field coil which induces the high voltage spike in the secondaries.

read attached document

if the ignitions coils test ok resistance wise .... you can always swap them to see ig the problem follows the bad coil or.... originates inthe EMM control side of things...and wires.

check all connections & wire continuity between EMM to ignition coils.

remove and clean the EMM connectors and the small one to the coils see diagram ... all this as a starting point anyway.

check all fuses on the power dist. panel clean all contact points

EMM could be toast and not firing the coils. EV diagostic is essential to trouble shoot FICHT and ETECS. You could always ask ($$) a ETEC dealer to plug in his laptop to dump a copy of the fault code presence if any stord and history .. ETEC EV DIAGNOSTIC is backward compatible to FICHT....but ETEC deale may not be cooperative.

if he is get a copy of the report

 

[Crosbyman]

see diagram

 

[Crosbyman]

check your personnal message box.

 

[Crosbyman]

see comment #1 re venting hose ... as found on a 115 ETEC


check my PM .... re: VST float snag

 

[Bmw201030]

Thank you!

 

[Crosbyman]

found the problem ??

 

[Bmw201030]

So I have determined the float is the problem. While it is functioning up and down without an issue and the tank was clean of any debris its not stopping fuel from running out the line at the top and its flooding the 2 cylinders which aren't running. I think my only option is to replace the tank. I,ve found a reasonably priced one off a used engine so I think that is the route I'm gonna go.

 

[Crosbyman]

I am surprised since the mecanics of it are very simple in operation. it is just a float with a needle and seat.

have you tried a good carb spray to remove any crud around the needle and seat area of the float. maybe a small mono line or very thing wire

make cartain your "USED" part work s !!

good luck keep us posted.

 

[Bmw201030]

I will try that. Thanks

 

[Crosbyman]

see video around minute 12:50 of a vst service on a smaller engine

the float itself contrarry to my understanding seems to cut off only the fuel entry to the vst ...

the vapour vent on top of your VST may be perfectly working whereas the float itselft is not doing the job of BLOCKING excess fuel which ends up exiting the vent valve on top.


in retrospect focus your search on the float inlet needle operation.


if it does getting fixed after you inspect it no fuel will reach the vent and none should !!