The Mitsubishi Pajero Owners Club®

GAZZ1ZZ · Posted: Tue Jul 25, 2006 9:41 Post subject: Is My EGR Sticking ?

Hi Guys

A couple of weeks ago i removed my EGR valve and gave it a good soak in parafin and removed all the build up of soot, then replaced, all went well.
Last weekend i took the family to the JAE Event with the caravan on the back and noticed up hill or when the car starts to labour at 60mph i would get excessive black smoke, to combat this i was told that when she starts to smoke just blip the throttle and it will stop, Yes i done that and it did work...... So what is causing this ? is the valve sticking ? shall i blank it ?
What you reckon ?

Any Thoughts Please.

Regards Gaz.

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vmaxsnoopy · Posted: Tue Jul 25, 2006 9:53 Post subject:

Under load, uphill, towing, black smoke, pretty much par for the course im afraid. Most diesels, Paj's included will do this. Just follow any wagon up a steep incline to experience it. Backing off the throttle or dropping a gear will improve things. Blanking the EGR is unlikely to make much difference mate.

The Apache · Posted: Tue Jul 25, 2006 9:54 Post subject:

Hi m8, i get the exactly the same when towing the van. Very laboured and continuous black smoke. I think it's just that the Paj won't accelerate any more, and when you put your foot down to try and make it go, it just causes overfuelling, which doesn't burn off.
There's no problem when not towing the van, so i just live with it, and i'm 99.9% certain that my egr is working ok.

Somebody feel free to correct me if i'm wrong, but this is how i understand it.

GAZZ1ZZ · Posted: Tue Jul 25, 2006 10:06 Post subject:

Cheers Vmax, That will save me a tenner then 8) I didnt really want to blank it anyway. I am an HGV1 Driver so i can relate to what you are saying although wagons are not as bad as they once was, in the mid 80s i think they were having competitions to see who could blow the most black smoke Laughing

Thanks again

Gaz.

GAZZ1ZZ · Posted: Tue Jul 25, 2006 10:18 Post subject:

Dont you feel embarassed when it does it though Phil ? I feel as though i cant enjoy the journey, Cant relax as im constantly watching for the smoke and trying to prevent it, easing of the throttle etc.

Gaz.

The Apache · Posted: Tue Jul 25, 2006 11:11 Post subject:

Me, embarassed, never Laughing

Well actually, it does play on my mind a bit though, and i actually thought about it whilst driving home from the Safari Park on Sunday night. I wasn't towing the van, but what made me think about it was, we were following a 04 plate vectra diesel, and that was throwing out black smoke nearly all the time, and that wasn't even towing Rolling Eyes

And i'll bet the vectra driver couldn't have given 2 hoots.

I don't think there really is a lot we can do about the problem, apart from maybe fill up with veg oil, but for that i'd need to have a camera on the back of the van, and a monitor in the Paj, so that i could watch the driver behind get that "booger me, i suddenly feel hungry" look on his face Laughing

johnkyte · Posted: Tue Jul 25, 2006 13:16 Post subject:

The EGR is working as it should --the black smoke is caused when egr opens,allowing exhaust gas back into combustion chambers ,thus depriving engine of oxygen,then fuel cant burn properly so reducing power from engine,preventing it from overworking
Lifting the throttle allows egr to close and engine to burn properly --thus no smoke
This is all about stopping you from overloading engine ,so the Paj with blanked egr is being overloaded ,which in turn will damage the engine,and shorten its working life

more x 4 · Posted: Tue Jul 25, 2006 14:45 Post subject:

you should have asked when i was sat next to you in that bit of drizzle at the jae mate Wink

i'ld have stayed a little longer Laughing

GAZZ1ZZ · Posted: Tue Jul 25, 2006 15:01 Post subject:

more x 4 · Posted: Tue Jul 25, 2006 15:04 Post subject:

yes mate that was me Wink

cssuk · Posted: Tue Jul 25, 2006 19:21 Post subject: