SuzukiSavage.com - Normal carbon buildup??

jwenrich YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 49	Normal carbon buildup?? 02/12/17 at 14:57:37 Is this a normal amount of buildup for a 2012 with 6500 miles?
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batman Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 3806 osceola new york Gender:	Re: Normal carbon buildup?? Reply #1 - 02/12/17 at 15:16:09 I'm no expert but I "think" that's a lot of carbon for only 6,500 miles,between you shaving the needle jet and the 55 idle jet ,and the fact that your plug had carbon at the base ,these all indicate that you were running rich. I 'm curious, how did you finally get that last nut off the headbolt?
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jwenrich YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 49	Re: Normal carbon buildup?? Reply #2 - 02/12/17 at 15:38:31 Here's my plug. I always thought I might be a touch rich. I haven't got the bolt off yet, I took the whole head + cylinder off together. I think I'll be sawing that bolt off :/ other side came off no problem.
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LANCER Serious Thumper Alliance Member Offline Savage Beast Performance Parts Posts: 10668 Oklahoma Gender:	Re: Normal carbon buildup?? Reply #3 - 02/12/17 at 15:59:27 That's a fair amount of carbon for 6500 miles but I've seen wors. Yes, you are rich.
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jwenrich YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 49	Re: Normal carbon buildup?? Reply #4 - 02/12/17 at 16:01:00 With the high compression piston going in, I'll be tweaking the jetting. Good to know for the adjustments though.
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Armen Serious Thumper Offline Half-Witted Wrench-Jockey from Jersey Posts: 1452	Re: Normal carbon buildup?? Reply #5 - 02/12/17 at 16:42:49 Can you humor me and take a pic of the piston from the side? Specifically the ring land area? thanks
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Ruttly Serious Thumper Offline Thumpers Rule Posts: 5112 Manteca , CA Gender:	Re: Normal carbon buildup?? Reply #6 - 02/12/17 at 16:51:29 Rich and/or possible valve stem seal(s) bad Not so much the color but the texture
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jwenrich YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 49	Re: Normal carbon buildup?? Reply #7 - 02/12/17 at 16:54:54 Say what?! After so few miles? I mean I like to ride it spirited but I don't abuse it. I was gonna take it to a shop to be honed, is it simple enough for them to check the valve stem seals too? Are valve stems an issue on these bikes? Hadn't heard of anything like that.
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Armen Serious Thumper Offline Half-Witted Wrench-Jockey from Jersey Posts: 1452	Re: Normal carbon buildup?? Reply #8 - 02/12/17 at 16:55:01 What heat range is the plug?
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jwenrich YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 49	Re: Normal carbon buildup?? Reply #9 - 02/12/17 at 17:00:50 Here are those piston pics of the side. Probably post inner cylinder ones soon. Walls are smooth, but feels like chunky carbon toward the top...
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jwenrich YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 49	Re: Normal carbon buildup?? Reply #10 - 02/12/17 at 17:02:18 Different rotation Stock plug.
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justin_o_guy2

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Re: Normal carbon buildup??
Reply #11 - 02/12/17 at 17:02:34

LANCER wrote on 02/12/17 at 15:59:27:

That's a fair amount of carbon for 6500 miles but I've seen wors.
Yes, you are rich.

Your observation is the piston, the plug, both?
The piston doesn't look good even to me,

Could the piston be carrying a carbon buildup from a few thousand miles ago? Or does the plug indicate running rich now?
If I had an engine running rich and figured it out and got it jetted right, would the piston Keep its carbon buildup or would it slowly shed it?

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Armen

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Re: Normal carbon buildup??
Reply #12 - 02/12/17 at 17:09:55

I'm inclined to think that the carbon is oil, not gas. The crud on the piston between the rings makes me think the rings weren't sealing well, and that oil was sneaking past the rings up into the combustion chamber.
How was the oil consumption? What weight and what brand of oil?
Plug looks a tad hot with a lot of crud on it. Often people use a hotter plug to keep it clean when a motor is running too rich or burning oil.
Kinda thinking out loud here.

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jwenrich YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 49	Re: Normal carbon buildup?? Reply #13 - 02/12/17 at 17:43:11 Everything is stock, haven't replaced the plug. Got the bolt off, pics below of valves, exhaust and top of the cylinder... Oil I use, Rotella t6 synthetic 5w-40
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jwenrich YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 49	Re: Normal carbon buildup?? Reply #14 - 02/12/17 at 17:45:30 Cylinder...
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