Vehicle & Technical > Mitsubishi

got a diesel? read this

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more x 4:
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=

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

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

more x 4:
i think most are wondering if this is what killed their heads

nzrover:
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.

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