View Single Post
Old 10-04-2012, 12:07 PM
Orient330iNYC's Avatar
Orient330iNYC Orient330iNYC is offline
Flying monkey herder
Location: Wall St
Join Date: Jul 2002
Posts: 7,575
Mein Auto: Daihatsu Terrios
Originally Posted by vrmoreno3 View Post
Curious, does anyone use the gas additive for valve cleaning? Or is that a no-no.
it will only clean the injector.

the issue with a direct injection engine, the injector is in the cylinder. gas additives worked on manifold injected cars as the fuel would wash over the intake valves on its way into the cylinder.

with a direct injection engine, the fuel is injected directly into the cylinder, so the fuel (and cleaning additives) never touch the back of the intake valves.
Past: 2001 330i ZSP/ZPP/Step
Past: 2004 S60R 6MT Sport
Past: 2007 335i 6MT ZSP/ZCW/322/655
Past: 2010 335xi ZMP/ZCW/ZPP/PPK/PE
Past: 2013 335i 6MT ZMM/ZDH/ZTP/3AG/494/508
Present: 2016 F34 335i xDrive ZCW/ZDA/ZDH/ZTP/ZMP/2V5/5DL

Current Homeland Threat Level:
Reply With Quote