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Ive got a 2005 d22 3.0l,its just started playing up its fine…

Customer Question
Hi,ive got a 2005...

Hi,ive got a 2005 d22 3.0l,its just started playing up its fine when under load but when u back off the accelerator it startsz to miss & boost surge blows blue smoke when this hasppens but no other time,it seems to be blowing air back through air filter at times..

Mechanic's Assistant: Do the vents feel cold? Is there a coolant leak?

My over flow bottle isn't even hooked up,hose just dangling..

Mechanic's Assistant: What is the model of your '05 Nissan?

D22 navara

Mechanic's Assistant: Are you fixing your Navara yourself? What have you tried so far?

Yes ive recently fitting an oil catch can,pretty sure its leaking air,also replaced the vacuum hoses.

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

Not that I can think of

Submitted: 6 months ago.Category: Australia Car
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Answered in 3 hours by:
12/27/2017
AU Auto Mechanic: Matt, Engineer replied 6 months ago
Matt
Matt, Engineer
Category: Australia Car
Satisfied Customers: 23,309
Experience: Automotive Engineer for 20 years, BEng hons degree,
Verified

Hello and welcome to Just Answer

I'd check the state of the dump or 'blow off valve BOV'

The dump valve is on the turbo boost air (post compressor) side its there to blow off or 'dump' the excess boost pressure you get when you close the throttle ( like just before a gear change)
the important thing with a dump valve is that it seals properly when its not being operated if the valve has a torn seal or a broken spring then it'll blow off before it should and you'll lose boost pressure

this video shows how you can test it
https://www.youtube.com/watch?v=kXRaGg06m7s

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AU Auto Mechanic: Matt, Engineer replied 6 months ago

My goal is to give you the best advice that I can and I hope that I've helped today. Please remember to rate my service by selecting from the 5 stars at the top of the screen before you leave. If you need more help, use the reply box to let me know.
If you're not pleased, also let me know because rating bad does not result in a refund, there are better options. Rating now will not close this post nor prevent further replies
Thanks Matt

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AU Auto Mechanic: Matt, Engineer replied 6 months ago

Hi
do you still need help?
Bear in mind that the site takes a deposit from you at the beginning and this is held by the site until you rate my answer at which point the cash is split between the site and the expert. I am only paid for my work on this question if you rate my answer, using the star system at the top of the screen. Please do not forget! If you're not pleased, also let me know because rating bad does not result in a refund, there are better options. Rating now will not close this post nor prevent further replies
Thanks Matt

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