Those of you who have been following the "emission" type threads will know that exhaust gasses are partially fed into the combustion chamber via the Exhaust Gas Recirculation (EGR) valve. This is done so as to reduce nitrous oxide emissions and combustion temperature for increased engine life.
The EGR gets very coked up with exhaust gas carbon and needs cleaning periodically. Also the throttle body gets (TB) a clean as well !
Photo 1: The EGR and TB in position by the dipstick and inlet manifold. From bottom to top we have air inlet hose, throttle body (TB) and EGR valve with the metal exhaust gas feed pipe on the right side::
Photo 2: Dirty but not clogged (42k miles) TB (left) and EGR (right)
Photo 3: The cleaned TB and EGR with the cleaning product. You need some time spare to scrape and copper wire brush the hard carbon off. I gave the cast bits a bit of polish with emery cloth. THIS IS DIRTY WORK ! Note the gasket and seals that should be replaced I can give pn's later as I am still waiting for them to arrive:
Image 1: A basic exploded view with torque settings. Installation is the reverse of removal:
The EGR gets very coked up with exhaust gas carbon and needs cleaning periodically. Also the throttle body gets (TB) a clean as well !
Photo 1: The EGR and TB in position by the dipstick and inlet manifold. From bottom to top we have air inlet hose, throttle body (TB) and EGR valve with the metal exhaust gas feed pipe on the right side::
Photo 2: Dirty but not clogged (42k miles) TB (left) and EGR (right)
Photo 3: The cleaned TB and EGR with the cleaning product. You need some time spare to scrape and copper wire brush the hard carbon off. I gave the cast bits a bit of polish with emery cloth. THIS IS DIRTY WORK ! Note the gasket and seals that should be replaced I can give pn's later as I am still waiting for them to arrive:
Image 1: A basic exploded view with torque settings. Installation is the reverse of removal:
