Menu
What's new
By:
Advanced search...

Exhaust fumes in cabin

N

neilmeagher

Members
Messages
13
Reaction score
0
Location
Ireland
Car
Accord 2009 ex idtec
Hi guys, I have exhaust gas fumes smell in the cabin for the last week. It is especially noticeable just after start up or at slow speeds. I have looked under the bonnet and cant see any obvious leaks. I have read on another website that there was a problem with a cracked egr pipe on earlier model 8th gens, Honda issued a tsb regarding the problem. Just wondering has anyone else experienced this problem.
 
Yes it's quite a common issue. The aluminium egr bypass pipe cracks at the bend.

This is why we blank the egr as part of the tuning and DPF removal so even if the pipe cracks, it will be empty.

Have a good smell around the nearside front and side of the engine with it running, if it's bad you can sometimes hear it leaking.
 
Interesting to read this as I've had the same. I'm no mechanic so have to ask can this occur on both diesel and petrol?
 
Yes an exhaust manifold or related pipe can crack on either petrol or diesel. Not seen one happen on a petrol Honda yet though.
 
hale-pope said:
Interesting to read this as I've had the same. I'm no mechanic so have to ask can this occur on both diesel and petrol?
Click to expand...
On another post I think I noticed your car is also i-DTEC ?

Anyway, all "modern" diesels have an "external" EGR (external = pipes and mechanisms outside the engine), but not all "modern" petrol engines have "external" EGR (e.g. the K24 doesn't, it uses valve overlap inside the engine)
 
It really depends on your level of competence. The EGR is at the back of the engine, and quite involved in removal. Better to blank and get rid of the problem permanently.
 
And if the nuts and bolts come undone easy. I had one to do and it was a right pain as everything was seized or sheared.
 
I had a new EGR pipe fitted yesterday as my old one was cracked. Genuine part but my indie did the work. £400. Runs like a dream now. I am sure it would have run fine with the crack and it passed its MOT with it cracked and hissing and stinking of diesel but I plan to keep this car for a long time yet.
 
F6HAD said:
Yes it's quite a common issue. The aluminium egr bypass pipe cracks at the bend.

This is why we blank the egr as part of the tuning and DPF removal so even if the pipe cracks, it will be empty.

Have a good smell around the nearside front and side of the engine with it running, if it's bad you can sometimes hear it leaking.
Click to expand...


Where abouts is the aluminium pipe you mention, on the engine? I'm having a strange diesel exhaust smell on my 2.2 idtec and the EGR pipe that goes across the top of the gearbox is fine, no cracks. I can only detect the smell when driving around town. On motorway it's fine.

At first I thought, cracked exhaust manifold, like the iCTDi does but that was because they're two piece. The iDTEC doesn't use that design.
 
The pipe is under the front exhaust heatshield, connected to the manifold and runs along the passenger side of the block back to the egr at the rear of the engine. With the engine running, have a sniff around the battery area. If you can smell fumes it’s likely that. The other thing to check for is any weeping injectors, that can also cause a similar smell.
 
F6HAD said:
The pipe is under the front exhaust heatshield, connected to the manifold and runs along the passenger side of the block back to the egr at the rear of the engine. With the engine running, have a sniff around the battery area. If you can smell fumes it’s likely that. The other thing to check for is any weeping injectors, that can also cause a similar smell.
Click to expand...
Do you mean this pipe?

www.coxmotorparts.co.uk

Genuine Honda Accord 2.2 I-Dtec EGR Pipe Kit 2010 Onwards (06187RL0306) - Cox Motor Parts

Buy Genuine Honda Accord 2.2 I-Dtec EGR Pipe Kit 2010 Onwards (06187RL0306) from Cox Motor Parts. Learn more.
www.coxmotorparts.co.uk www.coxmotorparts.co.uk


I checked this with an endoscope when I serviced the car and there was no signs of soot on the corrugated sections of it on the side of the engine, above the gearbox bell housing area.

I'll take the manifold heat shield off and see if I can see anything there. It's certainly annoying.
 
Yep that’s the one.
 
F6HAD said:
Yep that’s the one.
Click to expand...
I've had the heatshield bolts and the single nut off. Came apart easy, however to remove the shield completely, the O2 sensor needs to come out. I'm not willing to risk damaging that or the threads in the DPF, so I lifted the shield enough to get my endoscope underneath it.

There's absolutely no signs of soot on the underside of the shield, the turbo flange is clean, the EGR pipe is clean, the flange where it bolts to the manifold clean, no crack on the EGR pipe, no tell tale soot marks.

The injector wells are also clean, no sign of any soot, so this occasional smell I keep noticing must be other cars that have had the DPF and cat chopped out.

I'm leaving it alone now. Unless it's pouring smoke out of the exhaust or there's an audible crack in it, I'm not messing with it.
 
Yeah you need a proper lambda socket removal tool otherwise you’ll damage the lambda and/or the heat shield. Like I said previously, easiest way to tell is to just smell around the battery area with the engine idling. If you can’t smell anything it’s most likely fine.
 
You must log in or register to reply here.
Top