Piston Slap: Bustin' Carbon Down Mexico Way!

TTAC commentator cacon writes:

Hello Sajeev,

I’m a long time reader, but not much of a poster. Anyway, I currently own a 2009 SEAT Leon (bought new, I’m from Mexico if you wonder how I got this car), which is basically a 5th gen VW Golf in drag, 1.8 TSI engine and 6 speed manual, 32k km in the odometer (about 20k miles) almost 100% of city stop and go traffic. Currently, there’s nothing wrong with the car, but today I took it to the dealership for the vehicle emissions tests (all good) and looking at all the services that they provide I found this: Engine Carbon Build Up Cleaning with Hydrogen, so I ask the service representative what it was, in he basically told me that a machine is connected to the fuel system of the car and they feed it with hydrogen and keep the car running for about half an hour, and that should remove all the carbon build ups in the system.

Reading this and other forums I learned about the propensity of major carbon build in the valves, regarding the direct injected engines, so I found this interesting. Googling this cleaning system, I rapidly found about it: OxyHydrogen Engine Carbon Cleaning, although I just barely read about using it in scooter engines.

Then it came to me!! Ask Master Sajeev about it!! So I’m wondering if you ever heard of this system and if it’s really effective in removing carbon build ups, or if it is a bad idea to ever think about it. Dealership charges about $50 to perform this service by the way….

Saludos desde México!!
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  • Dale Had one. The only car I ever bought because of a review in a guitar magazine.Sure was roomy inside for such a small car. Super practical. Not much fun to drive even with a manual.Sent it to college with my stepson where it got sideswiped. Later he traded it in on an F-150.
  • Bd2 Hyundai's designs are indeed among the most innovative and their battery technologies should allow class leading fuel consumption. Smartstream hybrids are extremely reliable.
  • 28-Cars-Later So now H/K motors will last longer in between scheduled replacements. Wow, actual progress.
  • AZFelix I have always wondered if the poor ability of Tesla cars in detecting children was due to their using camera only systems. Optical geometry explains that a child half the height of an adult seems to have the same height as that same adult standing twice as far away from the viewer.
  • 28-Cars-Later Actually pretty appealing (apparently I'm doing this now). On a similar note, a friend of mine had a difficult situation with a tenant which led to eviction and apparently the tenant has abandoned a 2007 Jag S-Type with unknown miles in the garage so he called me for an opinion. Before checking I said $2-3 max, low and behold I'm just that good with the 3.0L clocking in at $2,3 on average (oddly the 4.2 V8 version only pulls $2,9ish) and S-Types after MY05 are supposedly decent.