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Jan 23rd, 2013
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Spark Plugs on a Merc #13390712 01/02/20 06:59 PM
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Champion1 Offline OP
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I have 2015 200hp ProXS that has never had the plugs changed. Is this something I can do myself or does the computer need to be reset?


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�It�s all in your head. It doesn�t matter if your 6 or 60. You can participate in this sport."-Rick Clunn
Re: Spark Plugs on a Merc [Re: Champion1] #13390716 01/02/20 07:04 PM
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dk2429 Online Content
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Do it yourself! Easy job... Just make sure you get the exact NGK plugs that you pull out (don't remember the exact part number.)


Majek 22 Extreme/225 Optimax Pro XS
2006 Chevy 2500HD Silverado/6.6 Duramax LBZ


Re: Spark Plugs on a Merc [Re: Champion1] #13390753 01/02/20 07:46 PM
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T Bird Offline
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Yep easy task. Get some dialectical grease to put inside spark plug boot.


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Okie by birth, Texan by choice.
Re: Spark Plugs on a Merc [Re: Champion1] #13390826 01/02/20 08:55 PM
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gary purdy Offline
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I would pull one of the easy to get to plugs and look at it first. Wait till you see where that #5 and #6 are at.


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
Re: Spark Plugs on a Merc [Re: gary purdy] #13390838 01/02/20 09:14 PM
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T Bird Offline
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Originally Posted by gary purdy
I would pull one of the easy to get to plugs and look at it first. Wait till you see where that #5 and #6 are at.


Probably should split the cowl for easier access. Only takes a couple of minutes.


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Re: Spark Plugs on a Merc [Re: T Bird] #13391341 01/03/20 11:02 AM
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Stump jumper Offline
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Originally Posted by T Bird
Originally Posted by gary purdy
I would pull one of the easy to get to plugs and look at it first. Wait till you see where that #5 and #6 are at.


Probably should split the cowl for easier access. Only takes a couple of minutes.


+1, a ratcheting box end wrench will help


2200 Bay Champ/200 Mercury Optimax
2017 Tundra TSS 4x4 Crewmax 5.7L
Re: Spark Plugs on a Merc [Re: Champion1] #13391439 01/03/20 01:47 PM
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grout-scout Offline
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Read a thread on BBC this morning that Don Weed posted, apparently many of the iridium plugs on amazon that are really cheap, are fake plugs from China. Buy from a reputable source.

Re: Spark Plugs on a Merc [Re: Champion1] #13391553 01/03/20 03:06 PM
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Champion1 Offline OP
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What gap should they be set to?


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�It�s all in your head. It doesn�t matter if your 6 or 60. You can participate in this sport."-Rick Clunn
Re: Spark Plugs on a Merc [Re: Champion1] #13391597 01/03/20 03:33 PM
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T Bird Offline
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Originally Posted by Champion1
What gap should they be set to?


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USAF "Thunderbirds" Alumni 1985-1989

Okie by birth, Texan by choice.
Re: Spark Plugs on a Merc [Re: Champion1] #13391737 01/03/20 05:30 PM
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boatman025 Offline
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Pull lower cowls to make it easier


Hughes Marine
3855 Osage Lane
Wylie ,Texas
Re: Spark Plugs on a Merc [Re: Champion1] #13393504 01/05/20 04:59 PM
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Gamblinman Offline
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Be careful when re-gapping plugs with precious metals (iridium, platinum). The ground electrode must be bent using the proper tool.Use a wire feeler gauge carefully when measuring the gap between the ground and center electrodes.

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