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Re:Plugs fouling out quickly
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TOPIC: Re:Plugs fouling out quickly
#996673
brianis (User)
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Plugs fouling out quickly 7 Months, 3 Weeks ago  
So nothing has changed on or in my bike in 4 years but seems that my plugs start fouling out sooner then they should could I have week coils or what any ideal as would be great
 
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#996676
Deerkiller (User)
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Re:Plugs fouling out quickly 7 Months, 3 Weeks ago  
We need a little more info. Pics of the plugs would be very helpful. How do you know they are fouling? Notice a performance drop of some sort and happened to check plugs? Or something else? How soon is 'too soon'? Mileage and type of riding?

Also, I could be missing it somewhere but I don't see any info on your bike and jetting. I see you're in CO. What sort of elevation you are riding in is also good info.
 
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Last Edit: 2016/12/26 19:40 By Deerkiller.
 
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#996686
brianis (User)
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Re:Plugs fouling out quickly 7 Months, 3 Weeks ago  
So Greeley is 4658 ft I know the plugs are fouling out because it happened not long ago I'm just getting carbon buildup I changed them last when I got back from sturgis but haven't rode much nothing has been changed at all on my bike in the last four years I did take it in to get valves adjusted after I got back from sturgis but nothing at all has changed could my coils be weak and not getting enough fire
 
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#996688
Shores (User)
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Re:Plugs fouling out quickly 7 Months, 3 Weeks ago  
Did you take all four plugs out? How long did it sit without riding? How old is the gas? Have you used some Seafoam or other cleaner? Is your intake filter clean?
 
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#996694
brianis (User)
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Re:Plugs fouling out quickly 7 Months, 3 Weeks ago  
I did replace all 4 plugs at that time I have a k&n in the kuryakyn hypercharger haven't checked it but I guess I'll clean it out haven't put any cleaner through the fuel but up til the last couple months been riding couple times a week
 
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#996695
davej (User)
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Re:Plugs fouling out quickly 7 Months, 3 Weeks ago  
Don't worry about the coils. If you want to check anything on the coils start it up in a dark garage and look to see if there are any little sparks coming out of them. If there is you can either replace them or coat them with something like liquid electrical tape or just wrap them in a good cloth electrical tape. Check for a dirty air filter and we can go from there. Also as Deerkiller said a little more info of mods and jetting if you know would be helpful. Also did it start right after the valve adjustment? JMO but everyone here needs to stop all the valve adjustments unless there is a real issue requiring it. In almost every case when a valve adjustment is done it wasn't needed and it was a waste of time and money.

The only good thing about doing it is that with the tank off the bike you get a chance to see if the intake manifold is cracked and it gives you an opportunity to clean the top of the engine. But you can do that without pulling the covers.
 
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Last Edit: 2016/12/27 07:12 By davej.
 
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#996706
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Re:Plugs fouling out quickly 7 Months, 3 Weeks ago  
brianis wrote:
I did replace all 4 plugs at that time I have a k&n in the kuryakyn hypercharger haven't checked it but I guess I'll clean it out haven't put any cleaner through the fuel but up til the last couple months been riding couple times a week

If you haven't ridden it in a couple months as you indicated above, you may need fresh gas and to run two tanks with Seafoam, B-12, Techron or another fuel system cleaner treatment through it. You should do that occasionally any way. Cheap to do.
 
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Last Edit: 2016/12/27 10:20 By Shores.
 

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#996707
HotRodStar (User)
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Re:Plugs fouling out quickly 7 Months, 3 Weeks ago  
I dont know so Im asking to hopefully help; Could this be the dreaded SVS rearing its ugly head ???

Rod
 
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#996868
brianis (User)
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Re:Plugs fouling out quickly 7 Months, 3 Weeks ago  
I'm not sure about jetting it was done when I purchased the bike like I said said I've rode it for 4 years without a single issue so I know it's know that's not the issue as for manifold I've sprayed it with wd 40 and no change in idle so I'll clean the filter empty the gas run some cleaner and I didn't notice any change after the valve adjustment and as for the sis it has been removed by the po who had everything done at the dealer which I have the paperwork
 
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#996920
ms14796 (User)
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Re:Plugs fouling out quickly 7 Months, 3 Weeks ago  
After the initial 12,000 miles from new I purchased a set of Iridium plugs that should outlast the bike. These fire hotter with a better fuel burn. Also make sure your replacement plugs are the correct heat range for your engine. May want to bump up a heat range if plug is fouling.
Usually means your running rich or you may have oil seeping into the chamber fouling the plugs. Could be rings or Valve guide boots.
 
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RB
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2013 Road Star Silverado S AKA Yamaharley
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