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Jan 23rd, 2013
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Wh does my motor smoke #12296286
06/15/17 05:18 PM
06/15/17 05:18 PM
Joined: Dec 2008
Posts: 5,199
Desoto,Tx. Dallas county
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Fishbonz Online content OP
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Desoto,Tx. Dallas county
sometimes? I have and older 89 Merc 150 hp Blk Max engine and I was told that all older model mercury engines suffer from this characteristic at Idle even though it runs like a scalded dog! The oil reservoir has been removed by the previous owner so I manually mix the oil with the gas when I fill it. No problem with it`s compression either. It runs very strong. So what`s with the Idle smoking? Anyone have an IDEA?

Re: Wh does my motor smoke [Re: Fishbonz] #12296374
06/15/17 06:17 PM
06/15/17 06:17 PM
Joined: Nov 2006
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ft worth
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TLW Online content
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typical older 2 stroke merc.... can go to a syn. blend oil at 50 ta one might help some if ya haven't already.....

Last edited by TLW; 06/15/17 06:19 PM.
Re: Wh does my motor smoke [Re: Fishbonz] #12296442
06/15/17 07:22 PM
06/15/17 07:22 PM
Joined: Aug 2013
Posts: 25
Waxahachie TX
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Hardline43 Offline
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Waxahachie TX
I've got an 89 Johnson 110 and it does the same. Esp at start up. Synthetic does help on mine.

Re: Wh does my motor smoke [Re: Fishbonz] #12296456
06/15/17 07:31 PM
06/15/17 07:31 PM
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San Angelo
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40:1 or even 50:1 is a great ratio for WOT but at idle most 2 stroke only need about 100:1. Also at idle the exhaust temps are much lower so its not burning the oil completely, hence the smoke.

Re: Wh does my motor smoke [Re: Fishbonz] #12296483
06/15/17 08:02 PM
06/15/17 08:02 PM
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Desoto,Tx. Dallas county
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That explains everything! Thanks a lot Guys!Hardline43 what type synthetic do you use or recommend?

Last edited by Fishbonz; 06/15/17 08:04 PM.
Re: Wh does my motor smoke [Re: Fishbonz] #12296680
06/15/17 10:38 PM
06/15/17 10:38 PM
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Waxahachie TX
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Fishbonz I buy it at Walmart. It's the ,Evinrude/ Johnson oil. They have it it synthetic and the non synthetic.

Last edited by Hardline43; 06/15/17 10:38 PM.
Re: Wh does my motor smoke [Re: Fishbonz] #12296709
06/16/17 02:29 AM
06/16/17 02:29 AM
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TLW Online content
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Pennzoil Premium Plus 2-Cycle or Pennzoil MarineXLF......... walmart/academy.. that omc stuff might make it puke! eeks

Re: Wh does my motor smoke [Re: TLW] #12296710
06/16/17 02:52 AM
06/16/17 02:52 AM
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Originally Posted By: TLW
Pennzoil Premium Plus 2-Cycle or Pennzoil MarineXLF......... walmart/academy.. that omc stuff might make it puke! eeks


this ^^^

I took out the vro on my 96 johnson 175, smokes at idle but runs great. I buy the all synthetic when I can find it, xlf (synthetic blend) when I can't. I mix at 50:1 plus a little.


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Re: Wh does my motor smoke [Re: Fishbonz] #12298809
06/17/17 05:33 PM
06/17/17 05:33 PM
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TX
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Be glad it is smoking. That means it is getting more than enough oil. The only problem is at idle you are going to foul out the plugs sooner because of too much oil going thru the cylinders. You motor was probably set up with a mechanical pump that would pump faster as you would go faster. So if you removed this feature, then you get more oil than needed at idle and exactly what you need when you are running over 3k rpm. Smoking is good. That means it is getting oil. Just keep an extra set of plugs handy. Run on!

Re: Wh does my motor smoke [Re: tmd11111] #12298860
06/17/17 06:15 PM
06/17/17 06:15 PM
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Euless
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Originally Posted By: tmd11111
40:1 or even 50:1 is a great ratio for WOT but at idle most 2 stroke only need about 100:1. Also at idle the exhaust temps are much lower so its not burning the oil completely, hence the smoke.


This!
VRO variable ratio oiling disabled means you are burning 50:1 at idle vs 100:1


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Then He made the earth round...and He laughed and laughed and laughed!

Re: Wh does my motor smoke [Re: Fishbonz] #12299354
06/18/17 09:13 AM
06/18/17 09:13 AM
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Yantis, TX
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If she's smokin, she's oilin.

You pre-mix for WOT operation, at less RPM's, their is excess oil being combusted.

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