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Common Exhaust Corrosion Points
#1
Hi

Just got my berlingo multispace 53 plate mk2 not so long ago.

My exhaust started making a noise like a tank. the exhaust had came away from the rear silencer right on the clamp that connects it to the center pipe. Is this a common place for it to corrode?

the whole exhaust looks to be held on by only
1: engine outlet
2: bracket after center box
3: rubber hanger type things on the rear silencer

Are there any mods i can do that would make it a bit more stronger? Have replaced the rear silencer now...
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#2
(07-02-2013, 10:46 PM)hogie Wrote:  Hi
Are there any mods i can do that would make it a bit more stronger?

Exhaust system design allows for a considerable degree of movement and this is especially true of a diesel engine so the adding in of any extra supports that stiffen the hanging system is likely to introduce stresses leading to fractures.
This effect is exacerbated on older vehicles where the engine and gearbox mountings become softer and allow more movement than when new.
You may be tempted to add in by welding extra metal at areas you consider to be potential weak points but the very act of welding the pipe will in itself introduce new potential failures and new sources of rust.
The Berlingo system of exhaust hanging has been well proven over a number of decades ( same system used on other models ) and actually works rather well. It isn't unknown for original equipment exhaust systems to last for up to 15 years before requiring replacement.
From personal experience I'd be ensuring the existing hangers are in good order and that the whole exhaust has been hung without any induced stresses from bad fitting and rectifying these if present, after market silencers are the worst for this. Beyond this I'd leave well alone.
On my own Berlingo the silencer rear brackets needed moving by over an inch to get a natural and unstressed hang -I fitted my own system.
Regards,
Geoff.
[+] 2 users say Thank You to geoff for this post
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#3
I have had two M49's (1.9D & 2.0Hdi) and found that at around 77,000 the exhaust breaks @ the cat then very shortly cracks around the flare of the joint to the rear box also if the box has a strap that attaches the the hanger to the box they go around the strap to box interface (aftermarket "bosal" have the hanger welded to the box so this may stop that problem) then around 85-87000 front wheel bearings go, but thats another thread.
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#4
thanks for the replies guys Smile
[+] 1 user says Thank You to hogie for this post
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#5
(08-02-2013, 04:22 PM)Husqyman Wrote:  I have had two M49's (1.9D & 2.0Hdi) and found that at around 77,000 the exhaust breaks @ the cat then very shortly cracks around the flare of the joint to the rear box also if the box has a strap that attaches the the hanger to the box they go around the strap to box interface (aftermarket "bosal" have the hanger welded to the box so this may stop that problem) then around 85-87000 front wheel bearings go, but thats another thread.

How can you tell it's cracked? Is it obvious? I ask because I've got a 2.0HDI that's started sounding curiously noisy on a light throttle around 2000rpm but is ok under power. It's done 81k. I haven't had a look under it yet..

thanks!
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#6
Carefully stick your hand over the end of the tailpipe when the engine is running from cold, you will hear and enhanced blowing if it is leaking. Curiously, my 2.0HDI sounds like it is blowing at times but been on ramps at local exhaust fitters and no fault found. I do have an intermittant fault with the EGR sticking and think this might be the cause..
Berlingo Multispace 2.0HDI '54 reg Mediterranean Blue
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#7
(27-02-2013, 10:41 PM)andy-womble Wrote:  Carefully stick your hand over the end of the tailpipe when the engine is running from cold, you will hear and enhanced blowing if it is leaking. Curiously, my 2.0HDI sounds like it is blowing at times but been on ramps at local exhaust fitters and no fault found. I do have an intermittant fault with the EGR sticking and think this might be the cause..

Thanks for your reply Andy-womble. I wondered if it might be the EGR.. no idea what to do to fix those things, they're a mystery to me.

I'll stick my hand over it tomorrow and see what happens.

No faults show on the Lexia by the way.
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#8
As long as the exhaust is not blowing and the EGR is not throwing up any fault codes or causing the EML (Engine Management Light) to come on then I wouldn't worry about it too much...
Berlingo Multispace 2.0HDI '54 reg Mediterranean Blue
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#9
There are 3 tail pipes that fit the blingo diesel, i have been sent them all through the post, , and the hanging "Centrepoint " is different on all of them, also, the length of pipe from the flange to the front of the silencer is a different length on 2 of them, if you are sent the wrong one, and you fit it, it stresses the whole system and will cause early failure. the system should fit without pulling or undue force, and each component should hang vertically nicely

sorry for re activating this thread, its a mistake and I cant seem to delete it.
[+] 1 user says Thank You to Barkas for this post
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#10
Exhaust shouldn't corrode; it's stainless.
Or at least mine (later model) is?
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