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Discussion Starter #1
Hi guys. Not been here for ages.
I have a few family issues atm. Once clear i will b daily visiting again.
Anyway.
My 307 has come accross a fault.

I had a leak on a high pressure pipe from the pump to common rail.
Replaced and did over 2k miles. It struck another leak. Same place
Or so i thought. This time it was cmin from the bolt side out of the actual rail from the joint.
Anyway after replacing and runnin for ten mins i decided to clean the engine.
Covered the plugs with wd40 and jet washed the lot.
Thats when it happened.
Oh no. Anti pollution. Limp home mode active.

Faults found.
Common rail pressure too high on ignition.
Common rail short circuit to earth.
After flappin and cleaning i still have no joy.
These r premo faults too.

I tried all sorts.

Anyone any idea wat to do next?
Can the common rail be changed easy? Or the sensor? The haynes says not to but why not?
 

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Nothing wrong with washing an engine we do it all the time before we do big jobs.

Sounds to me like the water has got into the connectors behind the starter going to the rail sensor leading to no reading same as would happen if its unplugged.

Check both the wires and the connectors.
 

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Discussion Starter #6
Nothing wrong with washing an engine we do it all the time before we do big jobs.

Sounds to me like the water has got into the connectors behind the starter going to the rail sensor leading to no reading same as would happen if its unplugged.

Check both the wires and the connectors.
Hi. Thanks bud.
It was actualy peugeot who said to jet wash the engine and clean off the diesel so i cn see if its still leaking.
But anyway is the connector under the engine or behind? Cheers
 

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Close/behind starter motor front of engine near vac valves and harness trunking
 

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Hi guys. Not been here for ages.
I have a few family issues atm. Once clear i will b daily visiting again.
Anyway.
My 307 has come accross a fault.

I had a leak on a high pressure pipe from the pump to common rail.
Replaced and did over 2k miles. It struck another leak. Same place
Or so i thought. This time it was cmin from the bolt side out of the actual rail from the joint.
Anyway after replacing and runnin for ten mins i decided to clean the engine.
Covered the plugs with wd40 and jet washed the lot.
Thats when it happened.
Oh no. Anti pollution. Limp home mode active.

Faults found.
Common rail pressure too high on ignition.
Common rail short circuit to earth.
After flappin and cleaning i still have no joy.
These r premo faults too.

I tried all sorts.

Anyone any idea wat to do next?
Can the common rail be changed easy? Or the sensor? The haynes says not to but why not?
what size engine is this, could be the yellow connector that's on the wire fron the high pressure sensor on the common rail
 

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Discussion Starter #11
Its the 90 bhp seimens
Ive just received a refurbed rail and sensor so will get it fitted thursday.
Do i have to bleed it or anything just seen bleed tools on ebay for them.
Or is it a case of pull of push on and prime.
I checked the wires this morning. Can not see anything wrong howeva i pulled the plug too hard and snapped the sensor off the rail of the old one. Still drives the same anyway so trodin along til thursday
 

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You snapped the sensor of the rail and it still runs !!!

You must be looking at the wrong sensor :)

Its unlikely to be the sensor its much more likely to be wiring
 

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Discussion Starter #13
You snapped the sensor of the rail and it still runs !!!

You must be looking at the wrong sensor :)

Its unlikely to be the sensor its much more likely to be wiring
Defo the common rail sensor and the main bis still in the rail. Th electric bit has boken.

Cn anyone answer my question over bleeding?
 

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NO common rail engine needs bleeding they do it themselves

If you have snapped it and its still running the same at least your in the ballpark but I still recon wiring rather than sensor washing it would not have affected the sensor only wiring.
 

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Discussion Starter #15
NO common rail engine needs bleeding they do it themselves

If you have snapped it and its still running the same at least your in the ballpark but I still recon wiring rather than sensor washing it would not have affected the sensor only wiring.
Ok bud nice one. Any idea what the bleed tools rthe n ebay. Just type 307 common rail nd u will c one.
Ill change it over to the new one anyway as the old one has a small leak.
What should i look for with the wiring?
 

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Discussion Starter #17
The Bleed tools are aimed at eejits who do not know what they are doing :)
Thankyou mate. So i just swap em over n prime it. Then good to start it?
Any idea what i need to look for in the wiring? Had a quick look but thy just bundle together into a wire cover with loads of other wires
 
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