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Author [NL] [FR] [ES] [DE] [SE] [IT] [NO] [MY] Topic: Carbon buildup on pistons and valves  (Read 2566 times)

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Online Nutkwaka

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Re: Carbon buildup on pistons and valves
Reply #20 on: October 22, 2020, 07:15:03 AM
I'm tempted to pull the head off mine for a squiz. Or maybe see if I can borrow an endoscope from someone.
Glen
2018 Z900RS
2012 1400GTR (Concours)
FarRider #772
IBA #60302      Ulysses #63003

Offline flexonix

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Re: Carbon buildup on pistons and valves
Reply #21 on: October 22, 2020, 07:46:24 AM
A simple endoscope camera is ~$25 on Amazon.

Offline flexonix

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Re: Carbon buildup on pistons and valves
Reply #22 on: October 22, 2020, 08:16:55 AM
By the way, this what it looked like with one of those endoscopic cameras from Amazon.
Sometime before I disassembled the engine.


Offline calamarichris

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Re: Carbon buildup on pistons and valves
Reply #23 on: October 22, 2020, 03:37:32 PM
*Originally Posted by flexonix [+]
No modifications, all stock.
I was also thinking maybe this was a result of the crash.
Canít see how this could happen - the bike shutoff right away. I started the engine 3 months later with the same gas in the tank and let it fast idle for a minute. Did it only once.

Thanks for the response. It's highly doubtful that happened suddenly resulting from the crash. Takes time to get that kind of build-up.

You mentioned a lot of stop & go riding; did you get much highway riding?  That kind of build up could occur if you spend a lot of time idling and rolling around at low-rpm. If that's the case, it's never a bad idea to take her out on the highway once in a while to blow a little carbon off. (aka Italian tune-up.)

Did all of your pistons look like that? Any oil consumption? A leaky valve seal could cause that kind of build up. But it's highly unlikely all four cylinders would have a leaky valve guide seal in so few miles.

Glad you're okay. Any time you can walk away from a totalled bike, you drink a toast to your own good fortune.
Last Edit: October 22, 2020, 03:55:28 PM by calamarichris
If you think you can, or you think you can't, you're right.

Offline nick

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Re: Carbon buildup on pistons and valves
Reply #24 on: October 22, 2020, 04:11:27 PM
*Originally Posted by calamarichris [+]
it's never a bad idea to take her out on the highway once in a while to blow a little carbon off. (aka Italian tune-up.)

I've not ever heard the Italian tune-up phrase. That's a good one. I'll be using that in the future!

Offline Notsoaverageguy

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Re: Carbon buildup on pistons and valves
Reply #25 on: October 22, 2020, 05:09:51 PM
*Originally Posted by nick [+]
I've not ever heard the Italian tune-up phrase. That's a good one. I'll be using that in the future!

Yeah the quote came from the Fiat boys. (Fix.  It. Again. Tony).  :015:
Things should be made as simple as possible, but no simpler!
(Albert Einstein)

Online BASS 666

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Re: Carbon buildup on pistons and valves
Reply #26 on: October 22, 2020, 05:39:09 PM
*Originally Posted by Notsoaverageguy [+]
Yeah the quote came from the Fiat boys. (Fix.  It. Again. Tony).  :015:

fix it again tomorrow ...

Offline nick

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Re: Carbon buildup on pistons and valves
Reply #27 on: October 22, 2020, 05:44:31 PM
*Originally Posted by Notsoaverageguy [+]
Yeah the quote came from the Fiat boys. (Fix.  It. Again. Tony).  :015:

Thanks for leading me down that rabbit hole of vids!  :152:

Offline calamarichris

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Re: Carbon buildup on pistons and valves
Reply #28 on: October 22, 2020, 07:23:20 PM
*Originally Posted by nick [+]
I've not ever heard the Italian tune-up phrase. That's a good one. I'll be using that in the future!

Originated back in the 50s.  Years ago my (neglected) pick-up truck failed a smog test. When I told the smog test guy I hadn't started it in 3 months and only drove it 7 miles to his shop, he suggested I take it on the freeway for 30 minutes and bring it back. Passed with flying colors after that.
If you think you can, or you think you can't, you're right.