Mud-club

Vehicle & Technical => Mitsubishi => Topic started by: more x 4 on February 28, 2005, 11:07:53

Title: got a diesel? read this
Post by: more x 4 on February 28, 2005, 11:07:53

have you blanked your EGR? better read this then
http://www.pajerouk.co.uk/viewtopic.php?t=2271&start=0&postdays=0&postorder=asc&highlight=

Title: got a diesel? read this
Post by: Jan on February 28, 2005, 13:28:36

Should I go for ~~ :shock: or against ~~  :shock:
Never had my egr blocked ~~ :shock:
Never had reason to ~~ :shock:
Interesting reading tho ~~ Jan

Title: got a diesel? read this
Post by: discodaz on February 28, 2005, 19:19:12

I wonder if this has been a contributary factor in my previous post about overheating? :wink:

Title: got a diesel? read this
Post by: more x 4 on February 28, 2005, 20:22:54

i think most are wondering if this is what killed their heads

Title: got a diesel? read this
Post by: nzrover on February 28, 2005, 23:45:55

Here in NZ we get a huge number of ex-Japan Pajeros all with EGR.  My tame diesel specialist removes EGR and recalibrates the injector pump on these as a matter of course - he has dyno figures to show appreciable power gains from this, and there are no signs of reliability problems.  The most common fault I see is worn injectors - experience shows that 100,000km is about the lifespan of a set of injectors before they are worn out and lose their spray pattern leading to black smoking and power loss.

IME (as a mechanic) the Pajero (and some other) head cracking issues are almost certainly temperature related and are very easy to resolve.  If the glycol concentration isn't kept up around 50% the boiling point of the coolant is reduced to the stage that localised boiling occurs in the head leading to vapour lock and hot spots and eventual cracking.  This theory was proven in some Nissan powered Holden vehicles a few years ago - the Holden radiator was borderline for cooling the motor and they cracked heads every 100,000km whereas the same motor in the Nissans gave no head trouble whatsoever.

Title: got a diesel? read this
Post by: ChrisW on February 28, 2005, 23:57:30

I just haven't got one at all  :D

Title: got a diesel? read this
Post by: Tiny Tim on March 01, 2005, 21:17:53

Quote from: "more x 4"

i think most are wondering if this is what killed their heads

Nope - I know what killed mine and it wasn't a blanked EGR valve.

It was water pump failure, loss of coolant and poorly designed head that allows hot spots to develop.

Title: got a diesel? read this
Post by: more x 4 on March 01, 2005, 21:20:58

you on a mission tim?

Title: got a diesel? read this
Post by: Tiny Tim on March 01, 2005, 21:27:10

Nah mate - could be loads asking if EGR has killed their heads ...

Just I ain't one of em  :wink:

Now I'm wondering why mud keeps killing my alternator ?  :evil:

Title: got a diesel? read this
Post by: Simon_Doc on March 23, 2005, 09:42:36

I have followed the EGR topics with interest.
I have the plate here, however have never fitted it because I didn't feel it necesary in my case. My Paj accelerates well, doesn't smoke beyond normal limits, climbs hills like a good un and hits 85 happily. This is what I'd expect it to do.
Being a firm believer in the theory "If it's not broke don't fix it" I haven't.
That being said. If I ever feel the need to fit the EGR I will get the Diesel pump re-timed and calibrated professionally to suit the setup.
Coming from the 2-Stroke age of motorcycles I know what mucking about with the induction / exhaust side of things can do if you do not re-calibrate the fuelling properly. Usually it requires walking home and a lot of expensive parts / machining afterwards!

Regards,
Simon