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EGR Blank.
  #1  
Old 07-12-2017, 07:17 AM
MitchellW MitchellW is offline
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Default EGR Blank.

Hi guys,
I just bought a 2009 D40 2.5 TD.

The previous owner blanked off the EGR on
The right side of the motor as you’re looking
At it then cut the pipe itself.

Under certain loads or under certain vacuumed,
The car makes a shitty rattling sound. I took it to nissan
and they said they put the blank on the wrong
Side and shouldn’t have cut the pipe and that I’d have
to replace the EGR cooling pipe.

Does this sound right? I thought if the blank
Had been put on the wrong side, couldn’t I
just put another blank on the other side to get
the result as originally intended, or, regardless
of the blank, do I still have to run a complete
EGR cooling pipe?
Any and all help would be appreciated.
Mitchell
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  #2  
Old 07-12-2017, 07:36 AM
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if egr pipe was cut they would need two blanking plates, otherwise you loose either boost or exhaust. with only one blank it will have no power and either a ton of exhaust noise or a whole lot of hissing.

unless its the pipe rattling, i doubt very much the egr has anything to do with it.
most likely they are brain dead mechs who simply revert everything back to factory before even looking for the actual cause of the problem.

i would check if the pipe is cut or just broken, especially if its at a weld aera. egr pipes are known to break. that may be why they fitted the blanks.
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Old 07-12-2017, 08:18 AM
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Yes broken egr pipe will rattle.
Simplest fix is to remove and blank both sides off.

Have a look around the exhaust, some spots around the firewall and also the chassis rail under the passenger footwell are areas that can contact and rattle.
Also loose bash plates can rattle too.

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Old 07-12-2017, 08:45 AM
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Quote:
Originally Posted by MitchellW View Post

Under certain loads or under certain vacuumed,
The car makes a shitty rattling sound.
i don't think thats a pipe rattling around. if its a pipe it would all the time and especially when you hit bumps.
under load, i assume probably low rpm high throttle, sounds more like injection issues or timing issues.
that could be as simple as blocked up fuel filter reducing injection pressure.
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  #5  
Old 07-12-2017, 11:11 AM
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If it's the manual, grab some packing foam (the hard flat plasticky type that looks like a laminated sponge) and pop your bonnet.

The 2006-2009 Spanish D40s sometimes had clutch hydraulic lines that would rattle against the firewall under certain load conditions. These metal pipes run down the firewall - push the foam underneath and drive the car. If the problem goes away, leave the foam there. Nissan was doing something with the lines (can't remember if they replaced them or repacked them) but yours is well and truly past its warranty expiry now.

Edited to add:

The EGR is not going to be an issue. If both sides are blanked off, there's no EGR at all, end of story. However, what COULD be perceived as a rattle is the EGR blanking plate coming loose and letting puffs of exhaust out. That, or the gasket between the turbocharger and the exhaust manifold. Mine was making sounds like a kid on a clarinet at one point.
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Last edited by Old.Tony; 07-12-2017 at 11:17 AM. Reason: Added EGR info
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EGR Blank.
  #6  
Old 08-12-2017, 01:32 AM
MitchellW MitchellW is offline
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Default EGR Blank.

Thanks Guys.
1. it's an automatic.
2. it's Thai Build.
3. EGR pipe has definately been cut about 2 inches from the mount on the right side as you look at the engine.
4. It definately not a rattle from a body part given I can control the rattle with either acceleration or deceleration.
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EGR Blank.
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Old 08-12-2017, 02:47 AM
MitchellW MitchellW is offline
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Default EGR Blank.

Old. Tony.

I think you may have it. That's how it sounds. I just didn't think of it in those terms. I'll check it out.

Thanks
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