1990 evo plugs
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Road Master
Joined: Oct 2011
Posts: 957
Likes: 2
From: Carlsbad Springs Ontario
1990 evo plugs
Hi all.
Have a newly purchaced 1990 FLT ex. police with 160000 klms.
Havent had a chance to get to know her yet as winter was upon me and no garage etc.
Did pull the plugs and noticed heavy black sooty deposit on both.?
Any opinions. ???
Have a newly purchaced 1990 FLT ex. police with 160000 klms.
Havent had a chance to get to know her yet as winter was upon me and no garage etc.
Did pull the plugs and noticed heavy black sooty deposit on both.?
Any opinions. ???
I'm running E3-34 plugs right now and they seem to run a little on the hot side. Went to the dealer and got a set of 5R6A's to see if they run colder. Just some suggestions. My bike is fairly stock.
Thread Starter
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Road Master
Joined: Oct 2011
Posts: 957
Likes: 2
From: Carlsbad Springs Ontario
Thanks to all for the replies but ... aside from the plug makes etc.
Would i be possibly looking at a carb. set too rich or whatever .?
I think the po rode it to work and back in the last few years of ownership .???
If the plugs are this carboned up , i have to assume the heads are too .?
What would you recommend here boys ...?
Would i be possibly looking at a carb. set too rich or whatever .?
I think the po rode it to work and back in the last few years of ownership .???
If the plugs are this carboned up , i have to assume the heads are too .?
What would you recommend here boys ...?
Stellar HDF Member
Joined: Apr 2009
Posts: 3,039
Likes: 11
From: Northern Ontario
Hard to say, if your getting run on the heads could be carboned and also if po had a short run to work and he ran with enrich enter on that could blacken the
Plugs. Try a new set and see how they look after a good run after keeping the mph low which would keep your carb in the pilot jet range.
Plugs. Try a new set and see how they look after a good run after keeping the mph low which would keep your carb in the pilot jet range.
Last edited by RidemyEVO; Mar 13, 2012 at 11:16 AM.
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Road Master
Joined: May 2008
Posts: 803
Likes: 3
From: Collegeville, PA
I wouldn't put much value in reading the plugs on a bike that you just bought and has been sitting. Prior owner may have done nothing more than start it and let it idle every few weeks.
Change the plugs and all the fluids. Give it a thorough looking-over. Then take it out and ride it for a few hundred miles to assess how she runs.
Enjoy first, worry second.
Change the plugs and all the fluids. Give it a thorough looking-over. Then take it out and ride it for a few hundred miles to assess how she runs.
Enjoy first, worry second.
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Thread Starter
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Road Master
Joined: Oct 2011
Posts: 957
Likes: 2
From: Carlsbad Springs Ontario
Plugs are plugs as the ole saying goes , but the newer plugs are really good .
Would like to try a set of irridiums in the ole 1990 evo.
Anyone know what the proper cross over # is ?
Would like to try a set of irridiums in the ole 1990 evo.
Anyone know what the proper cross over # is ?
