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Nootkafisher

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Posts: 28
Reply with quote  #1 
Got 2 new outboards this spring and have used them a lot. 100% salt water use. We have about 110 hrs on them and I would estimate about 60% of that are trolling hours ( we alternate using only one at a time).
Questions:
After trolling for a few hours and we are ready to go someplace else, there is a substantial amount of smoke when we are getting up on plane. Is this normal? Also there is a faint smell of smoke when the wind is blowing just right. Everybody has said there would be no smell. Is the smell normal?
There is a small mount of oil leaking from the trim motor and now it's making odd noises and jerky. Any thoughts? Anyone else have this issue? It doesn't look to be the seal and might be from the back where I can't see.
Is flushing the outboards with the garden hose through the back sufficient? Sometime I notice salt is dried in various places on the lower unit.
Thanks for any input.
SEA_600

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Posts: 270
Reply with quote  #2 
2 Stroke = Burning Engine Oil

In my experience with ETEC's, they don't like extended trolling periods and the smoke is normal. The smoke would be normal, as is feint smell of oil. They are a far cry better than the carbeureted two strokes of old, but not perfect.

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If you've got them by the balls, their hearts and minds will follow. (John Wayne) | Seafarer Victory, Evinrude G2 C200PXAAD, Serial 05504198 |
GEB

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Posts: 2,182
Reply with quote  #3 
Quote:
Originally Posted by Nootkafisher
Got 2 new outboards this spring and have used them a lot. 100% salt water use. We have about 110 hrs on them and I would estimate about 60% of that are trolling hours ( we alternate using only one at a time).
Questions:
After trolling for a few hours and we are ready to go someplace else, there is a substantial amount of smoke when we are getting up on plane. Is this normal? Also there is a faint smell of smoke when the wind is blowing just right. Everybody has said there would be no smell. Is the smell normal?
There is a small mount of oil leaking from the trim motor and now it's making odd noises and jerky. Any thoughts? Anyone else have this issue? It doesn't look to be the seal and might be from the back where I can't see.
Is flushing the outboards with the garden hose through the back sufficient? Sometime I notice salt is dried in various places on the lower unit.
Thanks for any input.


Hi,
Re the tilt / trim "now it's making odd noises and jerky." try greasing the pivot points. Refer this post for location of Grease points and further info (In the G2 Operators Guide).
http://www.etecownersgroup.com/post/grease-fittings-8921070?highlight=g2+grease+fitting&pid=1297870176
Re the flushing, with a G1 you can run the engine when using the flushing Port. Evinrude state that running the motor (G1) is not necessary for a good flush however I've recently read a post here on EOG where the OP produced evidence enough to convince me to now run my G1 motor when using the Port flushing.
For your G2 I suggest you consult the Operators Guide for instructions. I know there's a bit in there about not tilting the motor too high when flushing but don't remember anything specific about running while flushing.
Re the salt residue, there's a product call Salt Away, recommended here on EOG which is available in Australia. The motor wouldn't need to be running to use it as it's siphoned from the container by the flow of hose water.
Also not correcting SEA_600 but IMO the whole point of an E-TEC is not to burn oil. No oil is normally burned as part of an E-TEC's combustion. Fuel only is injected into the combustion chamber.
When trolling for long periods with my little E-TEC 30 I will get soot on the lower engine covers and sometimes smell a little "two stroke" but from what I read here on EOG and Evinrude publications, this is normal and a result of running in Stratified mode (low RPM).

Cheers
GEB

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Stacer 389 Territory Striker
Model No.E25DTSLAFC
Serial No. 5503333
Mid North Coast
New South Wales
Australia 
The learner will not shear the rams.

alana

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Posts: 545
Reply with quote  #4 
Where does the oil go,if it's not burnt? I know, but I'm not telling!
GEB

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Posts: 2,182
Reply with quote  #5 
Quote:
Originally Posted by alana
Where does the oil go,if it's not burnt? I know, but I'm not telling!


Ok,
Well here's "what I've read" let's now see how good or not my recall is. LOL so if you know please correct me where I'm wrong. I did say "not normally burnt" as in oil in fuel but it is in small amounts because.
1. The rings on the piston (oil ring) scrapes the excess oil off the cylinder walls BUT the rings don't seal perfectly so some oil is left behind and is burned in the combustion process.
2. The crankcase has to breath or it will pressurise. (Now here's iwhere my two stroke theory is shaky).The reed valves IMO don't seal the crankcase perfectly so there'd be some "blowby" containing oil vapours from the crankcase getting past the reed valves and some of that would via the air intake enter the combustion chamber and be burnt. Some of the oil in suspension / vapours would also collect in the intake air box and any excess oil would drain back into the crankcase to be scavenged.
3. After the oil lubricant has done it's job ie lubricating, most of it will collect in the bottom of the crankcase and then be pumped back into the oil tank by a scavenger oil pump but as Point 2, some oil in suspension / vapours will be burned.
4. I think that most is the soot I find on my motor from trolling is incompletely burnt fuel rather than oil although as I said above some oil must be burned and if at trolling speeds the burn is incomplete then the soot could also be contributed to oil particles in the exhaust.
Ok, how'd I do ? Only reference material was my Swiss cheese of a memory with it's ever expanding holes and less cheese. Just give me a score out of 10 and tell me where I'm wrong. Don't bother with the Report Card comment as I already know that it's " could do better" LOL
Also IMO 4 stroke theory is so much easier to remember. " Suck, Squeeze, Bang, Blow"
Cheers
GEB
Ps I didn't include the earlier model E-TECs that have oil added to the fuel to lubricate fuel system components.

__________________
Stacer 389 Territory Striker
Model No.E25DTSLAFC
Serial No. 5503333
Mid North Coast
New South Wales
Australia 
The learner will not shear the rams.

PropNut

Registered:
Posts: 467
Reply with quote  #6 
Model/Serial, there are 2 completely different midsections 2 completely different trim units depending on if its TRAC or DPS.

Crank case is sealed on 2 strokes, oil is not injected with fuel but oil injected internally will eventually works its way to the combustion chamber which is how its burned.  Near Zero un-burned oil escapes the system which is required by the EPA, it is all scavenged and recirculated in one way or another even the oil tank vent is filtered.

Just because something is clean burning does necessarily mean it has zero smell, changing different types of oil will effect the smell of the exhaust, are you using XD100?
Nootkafisher

Registered:
Posts: 28
Reply with quote  #7 
It's not DPS. 
C150PX Ser#05488609 and C150PXC Ser#05487449.
Yes, I am using XD100.

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