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Jan 23rd, 2013
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 What are your thoughts on decarbing motors?
#10266510
09/08/14 12:18 AM
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Joined: Jun 2009
Posts: 1,658
Jared Nic
OP
Extreme Angler
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OP
Extreme Angler
Joined: Jun 2009
Posts: 1,658 |
Just curious and wanted to bring it up. Talked to one mechanic and said decarbing is good on older motors. Had another one tell me they don't like to do it because there's small pits in older motors pistons where the carbon builds up and removing it can cause power loss?
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Re: What are your thoughts on decarbing motors?
[Re: Jared Nic]
#10266560
09/08/14 12:36 AM
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Joined: Sep 2008
Posts: 116,105
hopalong
Pescador Loco
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Pescador Loco
Joined: Sep 2008
Posts: 116,105 |
I decarbed my 82 175 johnson and changed to full synthetic pennzoil and recommend everyone do it no matter what the age, especially if you run regular oil or even synthetic mix.
2 cans of seafoam in a couple gallons of mix and run it half out on the muffs, go to lake and run the krap out of it till empty (carry a couple gallons mix in a can).
then run seafoam about every second or third tank, one can to 20-25 gals of gas.
also did my 96 175 johnson.
you will see a good difference in how it runs.
" Hop, set the hook"!
hopalong 99,999
TexDawg 99,999
FJB! not my president by a long shot!
lake fork FISHERMANS COVE MARINA/reservations - 903 474 7479
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Re: What are your thoughts on decarbing motors?
[Re: Jared Nic]
#10266611
09/08/14 12:59 AM
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Joined: Jun 2009
Posts: 1,658
Jared Nic
OP
Extreme Angler
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OP
Extreme Angler
Joined: Jun 2009
Posts: 1,658 |
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Re: What are your thoughts on decarbing motors?
[Re: Jared Nic]
#10266669
09/08/14 01:22 AM
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Joined: Mar 2005
Posts: 1,382
Freeman Clark
Extreme Angler
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Extreme Angler
Joined: Mar 2005
Posts: 1,382 |
No 1 killer on a outboard is rings sticking from carbon.
I have decarbed my outboards for the past 40 years.
And to this date all has went well.
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Re: What are your thoughts on decarbing motors?
[Re: Jared Nic]
#10266686
09/08/14 01:32 AM
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Joined: Jun 2009
Posts: 1,658
Jared Nic
OP
Extreme Angler
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OP
Extreme Angler
Joined: Jun 2009
Posts: 1,658 |
Thanks Mr. Clark decarbed my 98 Johnson 130. Just wanted to hear opinions before I decarbed my 91 40 evinrude.
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Re: What are your thoughts on decarbing motors?
[Re: Jared Nic]
#10266934
09/08/14 03:06 AM
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Joined: Jan 2005
Posts: 14,049
Pat Goff
TFF Guru
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TFF Guru
Joined: Jan 2005
Posts: 14,049 |
Cheap insurance against a stuck ring. I am a power tune fan
Pat Goff Seadrift TX ![[Linked Image]](https://i.ibb.co/X48Kbbq/scooter-shallow.jpg)
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Re: What are your thoughts on decarbing motors?
[Re: Jared Nic]
#10268855
09/09/14 12:37 AM
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Joined: Aug 2009
Posts: 1,709
timbertoes
Extreme Angler
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Extreme Angler
Joined: Aug 2009
Posts: 1,709 |
Thanks Mr. Clark decarbed my 98 Johnson 130. Just wanted to hear opinions before I decarbed my 91 40 evinrude. might as well put in new rings.
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Re: What are your thoughts on decarbing motors?
[Re: Jared Nic]
#10269916
09/09/14 12:05 PM
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Joined: May 2003
Posts: 11,586
gary purdy
TFF Guru
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TFF Guru
Joined: May 2003
Posts: 11,586 |
The idea is to get the carbon out before it causes any damage and then to use a good additive to prevent ever having carbon build up again. Carbon will also build up in the tuner and exhaust adapter and cause performance issues. Their is some brands of fuel that already have cleaner in the fuel. Example: Chevron has Techtron, which is reported to be the base for Yamaha ring-free and several other fuel cleaning additives. I prefer Sea Foam.
The world will not be destroyed by those who do evil, but by those who watch them without doing anything. Remember what He has done and remember that He is not done yet!-- GOD IS GOOD
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Re: What are your thoughts on decarbing motors?
[Re: Jared Nic]
#10296165
09/20/14 02:33 AM
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Joined: Nov 2002
Posts: 4,439
Gamblinman
TFF Team Angler
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TFF Team Angler
Joined: Nov 2002
Posts: 4,439 |
If you run fresh fuel with the proper additives, there will be no need to de-carbonize it.
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Re: What are your thoughts on decarbing motors?
[Re: Jared Nic]
#10297125
09/20/14 08:56 PM
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Joined: Jan 2005
Posts: 14,049
Pat Goff
TFF Guru
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TFF Guru
Joined: Jan 2005
Posts: 14,049 |
That. Is not possible. Every drop of gas refined today has funk in it that builds up. De carbon should be yearly maintenance on any motor today. It just takes one small piece to turn into a charcoal brick and pre-detonate that cylinder. Grenade when that happens.
Pat Goff Seadrift TX
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Re: What are your thoughts on decarbing motors?
[Re: Jared Nic]
#10297532
09/21/14 12:41 AM
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Joined: Mar 2005
Posts: 1,382
Freeman Clark
Extreme Angler
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Extreme Angler
Joined: Mar 2005
Posts: 1,382 |
Pat you are 100% right on.
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Re: What are your thoughts on decarbing motors?
[Re: Jared Nic]
#10298222
09/21/14 02:22 PM
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Joined: Mar 2003
Posts: 1,382
lcbl75771
Extreme Angler
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Extreme Angler
Joined: Mar 2003
Posts: 1,382 |
What are the steps to de-carb? I have a 1992 175 Mariner.
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Re: What are your thoughts on decarbing motors?
[Re: Jared Nic]
#10298286
09/21/14 02:53 PM
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Joined: Jun 2008
Posts: 1,390
FMJshooter
Extreme Angler
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Extreme Angler
Joined: Jun 2008
Posts: 1,390 |
Pat knows his stuff. For the mariner instructions should be right on the power tune can. If not google will produce plenty of info on doing it.
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Re: What are your thoughts on decarbing motors?
[Re: hopalong]
#10298300
09/21/14 03:01 PM
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Joined: Dec 2006
Posts: 44,644
Mudshark
TFF Guru
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TFF Guru
Joined: Dec 2006
Posts: 44,644 |
I decarbed my 82 175 johnson and changed to full synthetic pennzoil and recommend everyone do it no matter what the age, especially if you run regular oil or even synthetic mix.
2 cans of seafoam in a couple gallons of mix and run it half out on the muffs, go to lake and run the krap out of it till empty (carry a couple gallons mix in a can).
then run seafoam about every second or third tank, one can to 20-25 gals of gas.
also did my 96 175 johnson.
you will see a good difference in how it runs. You know more than I do on this stuff but, I have always been under the impression that running an outboard at anything other than a high idle is bad for an outboard. I have been told to only run it at higher RPMs while it is loaded.
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Re: What are your thoughts on decarbing motors?
[Re: Jared Nic]
#10298386
09/21/14 03:37 PM
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Joined: Jan 2005
Posts: 14,049
Pat Goff
TFF Guru
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TFF Guru
Joined: Jan 2005
Posts: 14,049 |
Here is my process it's more effort than some but the results are worth it.
Warning! Your neighbors won't like you!
Two cans power tune.
Remove cowling and carb cover. Or EFI cover.
Warm up engine on hose.
Hand open carbs or EFI throttle spray in until it gags the motor. Empty 1st can in intake. Then remove plugs and empty second can in cylinders. Replace plugs walk away. I like to let it sit overnight then take to water and run it hard.
Pat Goff Seadrift TX
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