Common rail Diesel Pumps are far far far from cheap, Even for the OEMS!!!!
Modern common rail injectors, pumps, rails etc are all mega cash because they have to cope with 200-2000BAR!!!!! (bear in mind that most petrol engines run at 5Bar tops) and they have to meter out tiny tiny tiny volumes of fuel.
Thats why the derv engined option of a car is more money than the petrol equivalent.
And then theres the fitting of said item too, not just like 2 pipes and a couple of self tappers
f
i once saw a hi-ace van at toyota that had a misfiring injector. the spray pattern was aimed all at one point instead of a nice even disribution. said injector cut thru the piston, and the block in 1600 miles.
also, never ever undo a direct injection diesel pipe when its running or hasnt been de-pressurized. you will lose fingers etc. same goes for direct injection petrols.
pffft direct injection petrol is only at 45Bar (might still sting though)... we had a problem where the Derv rail pressure varied by 50Bar lmao
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