+robster+ 36 Posted March 30, 2013 any reports of swirl flap coming undone and wrecking the d4d ?aka shutter valvei just noticed it while blanking the egranyone had one out for a looksy to see if the butterfly is held by screws or riveted pins?might give it a go next weekend for a clean up at least Quote Share this post Link to post Share on other sites
Druid Boy 70 Posted April 1, 2013 Never heard of a swirl flap and, likewise, never heard of one coming undone. Quote Share this post Link to post Share on other sites
+robster+ 36 Posted April 1, 2013 this post got me thinking?http://www.toyotaownersclub.com/forums/topic/138591-sticky-about-each-model/?hl=swirl#entry1230136i think the thing with the servomotor to the left of my egr is the swirl flap? shuts over some at idle to make air more turbulent for a better combustion and to minimise intake noise on deceleration, posibly helps engine braking moreso on a petrol and opens up the more throttle given?well thats what they done on my v6 petrols anyway (one for each cylinder inlet), suppose the diesel is no much different.apart from there just being the one big main one! but cokes up over time due to the EGbloomingR lol Quote Share this post Link to post Share on other sites
