30K throttle service

[churp]

Originally Posted by Toyota Technician

i do a throttal body service EVERY 15 k on all my vehicles due to carbon buildup mostly because of the crappy gas now days, carbon is a byproduct of the combustion engine their is nothing u can do to prevent it and .....

Maybe a stupid question but.....I thought only incoming air goes thru the throttle body or MAF sensor???? Not sure where the engine bypass vent tube goes (think it's downstream of the TB and MAF also) but the oil trap DIY would stop most of that. So aren't we really talking of the crap buildup from what gets thru the air filter....so cleaning is rare necessity with proper air filter replacement????

Edit: Hate to say it but having an oiled K&N filter would possibly add contaminates!