moditsteve
Guest
Alright all can someone tell me what this ufo item is and what it does thanks alot ..
i like to know what is under my bonnet
i like to know what is under my bonnet
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that's your EGR valve the diaphram inside contrpls the exhaust gas entry into the inlet manifold at idle and at cruise, remove the pipe inset a 1/2" nail head first and replace the pipe, that's if you want to disable it and keep your manifold clean, the spindle and arm just above and left is the antishudder valve which only operates on shut down for a few seconds and then returns to normal
moditsteve
Guest
the red cable is for my Ampcheshire cat said:
U say remove the pipe and insert a 1/2 inch nail head whice pipe do u mean the rubber hose just to left with the bend in it???
and where do i insert the Nail in the EGR????
Thanks alot, also what diffwill this make is it just to keep manifold clean?
Triple D
Guest
I had my EGR valve completely removed when i had some work done on it. The mean, stick a 1/2 inch nail in the pipe that comes off the EGR valve, and remove or leave the valve their.
This is how mine now looks
This is how mine now looks
black pipe to "UFO" pull it off - insert nail, head first ensuring head of nail is a snug fit, leave approx 1/8" sticking out ( for removal if necessary) point of nail into UFO hole as you push the rubber pipe back onto ufo job donemoditsteve said:the red cable is for my Amp
U say remove the pipe and insert a 1/2 inch nail head whice pipe do u mean the rubber hose just to left with the bend in it???
and where do i insert the Nail in the EGR????
Thanks alot, also what diffwill this make is it just to keep manifold clean?
Ant FR said:
It stops exhaust gasses being re-circulated into the engine inlet manifold on partial / no power. The engine uses the EGR to help the warm up to be as fast as possible because the combusted air is already hot. However its obviously dirty and has no oxygen. Its also used to keep the emissions down as less oxygen = Less CO2, however more carbon soot (the black stuff).
Benefits:
A cleaner inlet manifold (however diesel over here isnt really bad enough to cause this unless you drive constantly under 1500rpm), its mainly a problem in the US.
People have also noted that engine response can be slightly faster. I personally think this is true, but very very minor. This is because the engine always has clean, cool, oxygen rich air in its cylinders so can react to an accellerator request much quicker rather than shutting off the EGR first.
Ive also noticed that on initial spool up when booting it, theres is less smoke. Thus helping a diesel come MOT time, although its not significant.
Disadvantage:
Engine warms up slower.
Kicks out more 'emissions' - but who cares, its not tested on the MOT whatever it is.
Any other input welcomed, im sure theres something ive got wrong/missed
Last edited:
moditsteve
Guest
i am just about to go do it and doing nights tonight so will let u know tom what i think, thanks alot all
EdButler said:Whew, thanks for the feedback!
what is the difference if i was to use vag to turn it down will it still open partially ??
moditsteve
Guest
this is a fair point, If I was starting again, I would fit a solenoid valve in the control line (pipe) to switch off when warmed up in winterEdButler said:
![[B)]](/forums/styles/seatcupra/oldforumsmileys/shades.gif "Cool [B)]")
moditsteve
Guest
is this valve supposed to now stay permentaly OPEN?? when i stary car rev etc it just stays open now is this correct ?? thanks steve
barryg said:
vag com can only reduce it to the min, not turn off completly.
Smee - VAG stands for Volkswagen AG which is the german term for a company, so like Mercedes AG also.
moditsteve - yes that seems fine.
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