I traded in my old kia sportage with this terracan 2003 model 2.9 crdi few weeks ago, it has 157K km on the clock. Seems to me it is in A1 condition. But because I have been accustomed to the smell of the diesel exhaust from my sportage, I can sense
a very different smell on the exhaust of terracan,really different from my previous vehicle. Would blocking the egr valve can improve this kind of thing? I guess it is lacking air, hence the smeel.

I have noticed that the egr pipe going to the intake is becoming hot a few seconds after starting the engine. I have read somewhere that the egr valve does not operate at idle and wot but only on mid range like cruising on highways. Does this
means my egr valve is faulty? Also, they say, it will improve performance by blocking the egr valve. What can you say?

Hi
You could try just cleaning out the valve-many times these get blocked up so may be worthwhile taking off and cleaning it you cant just remove it as this EGR valve increases the water pressure round the engine and is a part thats controlled by the ecm.
See here http://www.egr-valve.co.uk/hyundai-egr-valve.html
Cheers
Itza

I don't mean to be rude here, but I guess Itza is talking about a completely different system here. None of the Hyundai vehicles are water injected. The EGR valve here is the EXHAUST GAS RECIRCULATING valve.

To be honest, I don't know what will happen if the ECR valve is deleted (removed, canceled) from the Terracan. I suppose something will happen to the ECM (error detection and generating).

Anyway, there's an interesting thing here:

http://en.wikipedia.org/wiki/Exhaust_gas_recirculation

Read about EGR valves in Diesel engines. If what is said here is true, I'll be the first one to attempt removal of the infamous EGR valve.

Robert B

This post has been edited by Robert B.: Nov 1 2009, 11:55 AM

Yes thats what I thought. It seems right, the only thing egr valve is fitted only because of emmision control (Nox generation).
If my understanding is correct, blocking off an egr valve by inserting a piece of metal gasket to blocked the exhaust gas may not create a fault code as the egr valve itself is still working.

Hi Rob
No you are right to query what I said I am only a layperson when it comes to engines and I followed what I thought was good advise so I will stick my head up my behind for giving you incorrect info-perhaps I ought to look at more detail next time.

Cheers anyway

ItzatimeIgotcorrectedanyhow (IMG:style_emoticons/default/smile.gif) (IMG:style_emoticons/default/smile.gif)

Finally blocked egr valve on my terry. Did not tried it yet guite long because the power steering pump hose broke and it needed
immediate attention.

Its been a while, just an update about this egr valve being blocked in my terracan. I noticed an improved in acceleration, more responsive engine and more torque. Now I can go uphill on same road I always travel on 4th gear which I used to do on 3rd gear. That black smoke during acceleration is minimized. Turbo lag is unnoticeable anymore. Well, perhaps this is just what I feel though!

hi intrested in how easy/hard it was to block off your egr valve my terracan blows out loads off black smoke so would be intrested in knowing how to go about it Andy

This is an easy job and can be done in half to one hour. I blocked mine using an empty can of coke. Remove t/c intercooler to get easy access to the egr valve then removed/loosened the metal shield of the exh. gas manifold. From there you can easily start to work in removing the egr valve then blocking it off. It is even possible not to remove it at all, just try to loosened the
nuts, lift the egr valve and insert your metal gasket made from softdrink can.

Careful with the bolts/nuts not to drop in your t/c inlet. Good luck.

thanks for that is the egr valve on top of the exhaust manifold with a vacuum pipe coming from it.

yes that's it.

thanks for that will give it a go Andy

hi just like to say i have now blocked off my EGR valve after research on some aussie sites i found by blocking the vacuum tube going to the valve has the same effect, i just pulled the pipe though the clips to extend it cut it leaving enough to reconnect if it didn't work put a cut down nail (slightly larger than the bore of the pipe) in both end's of tube put on two tie wraps and that's it, can't say the power as increased much but the black smoke as gone, i havn't noticed any engine temparture increase so i'm pleased hope this helps you other terracan owners out there Andy