Nissan Navara ZD30
Submitted: Wednesday, Jan 30, 2008 at 09:49
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citrabia
I have a Navara 2004 which is missing when under load. Occurred in 4th gear first then 3rd now in 2nd. Rev specific originally 1800-3000rpm. ie when turbo pumping and under load. EGR return line is caked in carbon and oil/diesel. no fault on engine computer. Injectors ok. Replaced Crank position sensor as that was only fault on ECU. Any clues?? Thanks
Reply By: Brad40 - Wednesday, Jan 30, 2008 at 17:40
Wednesday, Jan 30, 2008 at 17:40
i recently had a similar problem with my turbo diesel courier whilst 800ks from
home , it just woundnt rev over 2000rpm. after much head scratching i got some advice from "
United Fuel Injection " in
perth. (many thanks to them )
I removed the fuel intake at the injector pump ,with the banjo bolt removed i the found a spring with a very fine mesh basket filter inserted in the intake ,with the help of a bit of wire bent into a hook i got it out .it was chokkas full of crap & you couldnt see through it . i used a can of bushman repellent to pressure clean it from the outside in. put it back together & now runs better than ever .
I dont know if the nav is the same but might be worth a look.
good luck ..
brad
AnswerID:
284549
Follow Up By: Member - Matthew ,United Fuel- Wednesday, Jan 30, 2008 at 19:38
Wednesday, Jan 30, 2008 at 19:38
Yes that is very common problem,they are VERY fine filters and if you copped a load of crap in the tank this maybe the cause also.
Matt
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Reply By: Chaz - Thursday, Jan 31, 2008 at 22:03
Thursday, Jan 31, 2008 at 22:03
Hi Citrabia,
Just on the filthy black grease in your intake manifold – it’s the result of excessive EGR and crankcase blowby oil entering the turbo. I strongly suggest you at least fit a blowby oil catch can.
Mine catches on average around 10ml every month of crankcase blowby oil that would otherwise make it’s way into the inlet manifold and mix with EGR to form that thick black greasy paste that’s good at blocking the inlet runners.
After blocking my EGR and fitting an Air/Oil Separator, my inlet is relatively clean.
You can fit a manual boost controller to limit your boost to wherever you want it. I have a
Dawes valve and manual controller fitted to
mine to limit my boost. I rarely see over 10psi on the boost gauge, but I have a VNT which is a little harder to control. Having a waste
gate, you can fit a Turbosmart Boost Tee or a Dawes Controller to manage your boost. ZD30 Navara’s can boost to over 25psi at full throttle, but keeping to a maximum of 15 or 16psi won’t hurt power, but increase the engines life.
AnswerID:
284846