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Author Topic: Good? Bad ? Need help  (Read 753 times)

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Offline josherr

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Good? Bad ? Need help
« on: August 30, 2015, 01:31:57 PM »
Newbie here
Today when I was taking off my exhaust pipes I looked inside the cylinder head all I saw black dust
Is this normal or is something not right
Anything helps
Thanks








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Offline goldarrow

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Re: Good? Bad ? Need help
« Reply #1 on: August 30, 2015, 01:33:25 PM »
If your bike has 0 miles, and with that much carbon deposit, then I'd worry.
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Offline calj737

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Re: Good? Bad ? Need help
« Reply #2 on: August 30, 2015, 02:28:26 PM »
It's not good. It's a sign of too much fuel and too weak of a spark to burn the fuel present. Short of pulling the head and having it cleaned professionally, best you can do is get he bike tuned properly, and run some high quality gas and a fuel additive to help de-coke the motor.
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Offline goldarrow

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Re: Good? Bad ? Need help
« Reply #3 on: August 30, 2015, 02:50:36 PM »
Only to have it come right back.  Unless your looking for something to do, pull the head is actually fun and enjoyable experience.  Be ready to "might as well do it while you're there"
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Life Is Full Of Challenges - And My Backyard Is Full Of SOHC4's

CB550 K0
CB750 K0, K2, K23 JDM, K45, K5
And the little ones z50r, xr50r, st90


750k5 http://forums.sohc4.net/index.php?topic=114817.0

Offline seanbarney41

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Re: Good? Bad ? Need help
« Reply #4 on: August 30, 2015, 07:10:16 PM »
perfectly normal
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Offline Jerry Rxman Griffin aka MuthaF'er

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Re: Good? Bad ? Need help
« Reply #5 on: August 30, 2015, 07:20:19 PM »
Quote from: calj737 on August 30, 2015, 02:28:26 PM
It's not good. It's a sign of too much fuel and too weak of a spark to burn the fuel present. Short of pulling the head and having it cleaned professionally, best you can do is get he bike tuned properly, and run some high quality gas and a fuel additive to help de-coke the motor.

And run the #$%* outta it to blow that stuff out.
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Offline RevDoc

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Re: Good? Bad ? Need help
« Reply #6 on: August 31, 2015, 05:45:13 AM »
From the Hondaman post "Things that cause a ratty idle":
#4: carbon buildup on the intake valve guide and stem. When the assembly warms up and the guide opens up, the thing runs OK. Try running BG44K (1 ounce per tank of fuel) for a while, or pull the head to check it out. (Bold is mine.)

BG products are available online. Did a nice job on one of my bikes.

 Then do as Jerry Rxman suggested!

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Dana

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