Peugeot 307 misfire cold.

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Peugeot 307 misfire cold.

Postby hbr » Thu Jun 21, 2012 8:20 pm

Hello here I am again with a problem car, a Peugeot 307 2.0 petrol with rfn engine from 2002.
This car misfires and backfires when you hit the throttle with a cold engine.
I have tested the fuel pressure, this is good, and I scoped the coil pack, this is where I need help.
The events don't look good to me but I don't know what the problem can be.
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Peugeot 307 bobine.psdata
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Re: Peugeot 307 misfire cold.

Postby Liteace » Fri Jun 22, 2012 12:13 am

Looking at that lot I would check 1st coil \ spark shorting to ground and then work from there
Last edited by Liteace on Fri Jun 22, 2012 1:46 pm, edited 1 time in total.
DONT SHOOT YOURSELF IN THE FOOT
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Re: Peugeot 307 misfire cold.

Postby hbr » Fri Jun 22, 2012 11:42 am

It has a coil pack on top of the plugs. Can it be faulty injectors? I found that one injector gets wet if you keep the pressure on the rail.
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Re: Peugeot 307 misfire cold.

Postby Avdr » Fri Jun 22, 2012 7:27 pm

CHB has nothing like the inductive kick that it should have compared to CHA. Would advise a coil pack.
See what others think...
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Re: Peugeot 307 misfire cold.

Postby Kev » Fri Jun 22, 2012 8:50 pm

Hi hbr,
I would definitely replace the ignition coil pack on this vehicle, they don't last long on these systems. If you can, try to source a descent make otherwise you will have the same problem in the not too distant future. I must have replaced hundreds of these coils in recent years.

Regards Kev

PS would be handy if you could upload a known good waveform for this vehicle after you have replaced the coil!
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Re: Peugeot 307 misfire cold.

Postby hbr » Fri Jun 22, 2012 9:02 pm

Hello guys, I will replace the coil pack and if its good I'll post a good waveform.
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Re: Peugeot 307 misfire cold.

Postby Robski » Fri Jun 22, 2012 9:46 pm

Kev wrote:PS would be handy if you could upload a known good waveform for this vehicle after you have replaced the coil!


& crank the sample rate up a bit more.
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Re: Peugeot 307 misfire cold.

Postby jam670 » Sat Jun 23, 2012 7:29 am

I have heard of non genuine spark plugs causing problems on some pugs. I don't know if it apply to this engine as well though but may be worth bearing in mind.

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Re: Peugeot 307 misfire cold.

Postby Robski » Sat Jun 23, 2012 4:39 pm

What plugs are in this ?
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Re: Peugeot 307 misfire cold.

Postby hbr » Mon Jun 25, 2012 6:48 pm

Bosch.
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