Peugeot 407 SW (2004 - ) - 05 1.6 HDi missfire

Honest John Back Room » Technical matters
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Sun 20 Jul 2008 12:20
05 1.6 HDi missfire - nmidd
Hi guys, I've got a 407 SW 1.6 110 HDi ad it's got what I can best descibe as a missfire.
It idles ok but when you blip the throttle it misses a bit and it seems to be a little rough and missing a bit when you accelerate from rest. The worst though is when you accelerate in either 4th or 5th, then the missing seems to vibrate through the whole car.
Any one got any ideas what this could be? Ta, nmidd.

Edited by Pugugly on 03/08/2008 at 13:36

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Sun 20 Jul 2008 15:37
05 1.6 407 1.6 HDi Missfire - Screwloose

Has the MIL light ever come on - or a warning message? What fuel has it run on?
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Sun 20 Jul 2008 21:47
05 1.6 407 1.6 HDi Missfire - nmidd
No lights or messages have ever come on and it's run on regular fuel
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Sun 20 Jul 2008 23:25
05 1.6 HDi Missfire - Screwloose

As the engine management is very sensitive to misfires and would flag a code; I'm beginning to wonder if this could be a DMF breaking up?
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Mon 21 Jul 2008 10:29
05 1.6 HDi Missfire - nmidd
OK, what's a DMF?
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Mon 21 Jul 2008 14:11
05 1.6 HDi Missfire - Screwloose

Dual-mass flywheel.

Two rotating steel components stuck together with Blu-tack - most have them.
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Sun 3 Aug 2008 12:44
05 1.6 HDi Missfire - nmidd
Have now had diagnosed by dealer as faulty injector. Prob is they're 280 quid each + vat + lab, that's 500 quid to change 1 and 1500 for all 4. OUCH!!!
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Sun 3 Aug 2008 13:07
05 1.6 HDi Missfire - Armitage Shanks {p}
If you can do without the car for 3 or 4 days it is possible to a refurb (with warranty) done on the injectors. If your dealer thinks it is 'A' faulty injector why is there talk about changing all 4? If it is an 05 isn't it under warranty? Perhaps just out?
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Mon 4 Aug 2008 20:21
05 1.6 HDi Missfire - nmidd
Yes I'm happy to do without car, do you know who can do refurb? They say, predictably, that at that mileage it would be better to change all 4, they would say that though wouldn't they?? It's under 3 yrs, 1/9/05, but done 80k so out of warranty.
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Sun 3 Aug 2008 16:56
05 1.6 HDi Missfire - Screwloose

"A" faulty injector? But they're so sure, that they're changing all four? Hmmmm....

What were the comparative leak-off figures?
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Wed 6 Aug 2008 10:39
05 1.6 HDi Missfire - nmidd
Pardon my ignorance Screwloose, but what are comparative leak off figures??
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Wed 6 Aug 2008 12:57
05 1.6 HDi Missfire - Screwloose

One of the best tests for a common-rail injector is to attach measuring bottles to each injector and then carry out a leak-off test.

Comparing the amounts that each injector is returning to the tank will often identify a faulty injector as it will be spilling ten times more than each of the others.

Before condeming an injector; your garage will have done this test - the results would be interesting.
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Mon 14 Feb 2011 10:36
05 1.6 HDi missfire - knotty72

Hi, what did they find with your car in the end???

I have the same issue at the moment and I'm struggling to find it. No faults codes, all injectors check out fine at a diesel specialist and I'm actually an ex technician, so I know whats what. It seems something really silly. I'm swing towards the turbo, but would be really interested to hear what fixed your car finally.

Many thanks Phil.

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Tue 15 Feb 2011 10:11
05 1.6 HDi missfire - dieselnut

Have you checked the EGR valve, may be stuck open with all the crud that passes through it.

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