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Old 08-12-2005, 08:48 AM   #1
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Default Indexing Evinrude FICHT Plugs

I recently purchased a Pursuit 2550 with twin 1998 Evinrude FICHT 150's. The mechanic I had survey the engines told me that the plugs had not been indexed when the previous owner installed them and doing so is critical to the FICHT engines. In all of the other references I have checked including the factory service manual there has been no mention of indexing the plugs. Has anyone else heard of doing this and is it improtant with these engines?
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Old 08-12-2005, 08:51 AM   #2
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Default RE: Indexing Evinrude FICHT Plugs


http://www.boatsetup.com/PlgIndexing.html

This link tells the complet step by step process and what plugs to use
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Old 08-12-2005, 09:42 AM   #3
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Default Re: Indexing Evinrude FICHT Plugs

I am not a mechanic by any means and its easy. Try to get a manual through a dealer. You will need a torque wrench and a sharpie marker.Buy your plugs @ www.sparkplugs.com. Basically you are trying not to block the injector with the resistor (J) part of the plug.
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Old 08-12-2005, 11:21 AM   #4
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Default Re: Indexing Evinrude FICHT Plugs

the plug s/b within 90 degrees of the injector for better firing.
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Old 08-12-2005, 03:36 PM   #5
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Default Re: Indexing Evinrude FICHT Plugs

what seahorse recomended it's a very good article .
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Old 08-12-2005, 04:22 PM   #6
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Default RE: Indexing Evinrude FICHT Plugs

You might need to buy 10 plugs for every 6 you fit to make them fit.
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Old 08-12-2005, 04:34 PM   #7
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Default Re: Indexing Evinrude FICHT Plugs

the torq does not have to be exact.
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Old 08-12-2005, 04:46 PM   #8
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Default Re: Indexing Evinrude FICHT Plugs

seahorse posted a very good link.I purchased 2 sets of plugs to do my change and went through 9 different plugs trying to get them positioned right.The previous set was not indexed and was fouled pretty bad,curious to see what they look like next time.
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Old 08-12-2005, 06:18 PM   #9
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Default RE: Indexing Evinrude FICHT Plugs

Quote:
moses0 - 8/12/2005 4:22 PM

You might need to buy 10 plugs for every 6 you fit to make them fit.
Good idea to buy a few extra. Most likely wont need 4 extras. Ocassionally, one plug in a bunch just wont index right no matter which bank of cylinders you try.
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Old 08-13-2005, 08:05 PM   #10
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Default Re: Indexing Evinrude FICHT Plugs

I have twin 2003 175 Ficht 6 cyls. I buy 15 spark plugs from sparkplugs.com to make sure I will have 12 that will index properly. I keep the 3 extra for emergency use and use them at the next SP change. The first time I changed the plugs I bought 12 and couldn't get one to fit anywhere. Buy extra!
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Old 08-14-2005, 10:03 AM   #11
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Default Re: Indexing Evinrude FICHT Plugs

Take the plugs that don't line up and try them on the other side. I would not chunck any of the plugs because the don't line up perfectly. The effect of not being indexed properly is that the plugs will not last as long.
I would suggest that you DECARB these engines without delay. Carbon causes these engines to die an premature and ugly death. The Seafoam method works well. On my engine spraying it in the air intakes did the job best, but you really need it in a test tank or in the water to give it some back pressure. These engines will want to over rev.

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Old 08-14-2005, 10:36 PM   #12
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Default Re: Indexing Evinrude FICHT Plugs

Along with indexing the plugs it might be a good idea to call BRP and see if the motors were "upgraded". They also recommend using carbon guard. All the evinrude johnson oils are suppose to have it already. I buy synthetic anyway it's never gone wrong with me. Certain upgrade kits "pin" the cylinders to deflect the deposits. I went through a dozen plugs to make them line up. I have a 98 150 FICHT. I talked to Bombardier and they've been great. They said those motors run bad due to extended periods of trolling, roughly 100 hrs. So don't troll with them. According to the factory. Give them a call and give them the serial numbers and they'll be able to tell you if they were upgraded. Service number is (847) 689-7090.
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