Where does the intake side carbon build up come from? I recently addressed a
carbon build up problem on our 1998 Dodge Neon R/T with the 2.0 DOHC engine.
The throttle plate was sticking after being parked for a while. I cleaned a ton
of black soot from the throttle body. And I have seen this build up on other
cars as well, including the Ford 5.0L engine I'm working on. Where, exactly,
does this stuff come from?
> In addition to the things others have mentioned, Toyotas of this era
> had some problems with intake system carbon buildup. It typically
> caused problems with the engine hot -- the gunk expanded enough to
> keep valves from sealing properly. I'd try some aggresive fuel system
> cleaner.
>
> --
> David Scheidt
> dmscheidt@gmail.com
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