DPF foam spray location
Discussion
mk08 said:
stevemcs said:
You need to fix the issue first, there is no point in cleaning it until that s done.
It shows these two codes when I connected my OBD II:a) P246C - DPF restriction - Forced limited power and
b) P24A4 - PF restriction - Soot accumulation to high Bank 1
Something has caused it, and unless you get that sorted it will just happen again.
Its probably driving style, which means the car hasn't tried to do a regen on its own. And it builds up over time and eventually the car won't do a regen at all.
Its possible to do a forced regen, with the right diagnostic tool. Given that a force regen is £0 (well, just the cost of diesel) and the instructions on DPF cleaning (chemicals cost about £60) normally say do a regen after its been used anyway, its always worth a go first.
Its possible to do a forced regen, with the right diagnostic tool. Given that a force regen is £0 (well, just the cost of diesel) and the instructions on DPF cleaning (chemicals cost about £60) normally say do a regen after its been used anyway, its always worth a go first.
paul_c123 said:
Its probably driving style, which means the car hasn't tried to do a regen on its own. And it builds up over time and eventually the car won't do a regen at all.
Its possible to do a forced regen, with the right diagnostic tool. Given that a force regen is £0 (well, just the cost of diesel) and the instructions on DPF cleaning (chemicals cost about £60) normally say do a regen after its been used anyway, its always worth a go first.
Sorry I didn't understand, how do I do it myself. I am not very technical but would like to do it myself.Its possible to do a forced regen, with the right diagnostic tool. Given that a force regen is £0 (well, just the cost of diesel) and the instructions on DPF cleaning (chemicals cost about £60) normally say do a regen after its been used anyway, its always worth a go first.
mk08 said:
Sorry I didn't understand, how do I do it myself. I am not very technical but would like to do it myself.
Service menu, then DPF, then Force Regen. Follow the instructions on the scanner. Last one I did, I had to press and release the brake, then raise the revs to 2500rpm, then idle, then start the program off by raising the revs again to 2500rpm. It took about 15 mins and the program showed relevant temperatures on screen during the run. There was some smoke initially, for about 20 secs, but that was it.paul_c123 said:
mk08 said:
Sorry I didn't understand, how do I do it myself. I am not very technical but would like to do it myself.
Service menu, then DPF, then Force Regen. Follow the instructions on the scanner. Last one I did, I had to press and release the brake, then raise the revs to 2500rpm, then idle, then start the program off by raising the revs again to 2500rpm. It took about 15 mins and the program showed relevant temperatures on screen during the run. There was some smoke initially, for about 20 secs, but that was it.Beware of forced regenerations - if the dpf has high soot deposits it can cause local hotspots which will damage the dpf. Certainly don’t try repeated regens.
The foam will work fine, allowing the soot to burn off at much lower temperatures which is safer for the dpf.
It is highly unlikely that it’s blocked due to your driving style unless you exclusively do very short duration journeys - as stated above there will be an underlying fault that needs to be repaired, then dpf cleaned with foam after which it should take care of itself.
Things to check - does the engine reach operating temperature? Are there any faulty glow plugs or a faulty glow plug controller? Air leaks on the induction system somewhere? Blocked pipe(s) to the dpf pressure sensor? Does the dpf pressure sensor read correctly?
You will need a decent scan tool or someone who can actually diagnose the underlying problem rather than ‘trying a forced regen’ or gutting the dpf and remapping. This will be picked up in future when particle monitoring is included in the mot. Plus it’s probably easier just to fix the fault.
The foam will work fine, allowing the soot to burn off at much lower temperatures which is safer for the dpf.
It is highly unlikely that it’s blocked due to your driving style unless you exclusively do very short duration journeys - as stated above there will be an underlying fault that needs to be repaired, then dpf cleaned with foam after which it should take care of itself.
Things to check - does the engine reach operating temperature? Are there any faulty glow plugs or a faulty glow plug controller? Air leaks on the induction system somewhere? Blocked pipe(s) to the dpf pressure sensor? Does the dpf pressure sensor read correctly?
You will need a decent scan tool or someone who can actually diagnose the underlying problem rather than ‘trying a forced regen’ or gutting the dpf and remapping. This will be picked up in future when particle monitoring is included in the mot. Plus it’s probably easier just to fix the fault.
LordLoveLength said:
Beware of forced regenerations - if the dpf has high soot deposits it can cause local hotspots which will damage the dpf. Certainly don t try repeated regens.
The foam will work fine, allowing the soot to burn off at much lower temperatures which is safer for the dpf.
It is highly unlikely that it s blocked due to your driving style unless you exclusively do very short duration journeys - as stated above there will be an underlying fault that needs to be repaired, then dpf cleaned with foam after which it should take care of itself.
Things to check - does the engine reach operating temperature? Are there any faulty glow plugs or a faulty glow plug controller? Air leaks on the induction system somewhere? Blocked pipe(s) to the dpf pressure sensor? Does the dpf pressure sensor read correctly?
You will need a decent scan tool or someone who can actually diagnose the underlying problem rather than trying a forced regen or gutting the dpf and remapping. This will be picked up in future when particle monitoring is included in the mot. Plus it s probably easier just to fix the fault.
Can you suggest any decent scan tool. I have a bluetooth one I bought online very cheap and use 'EOBD Facile' app.The foam will work fine, allowing the soot to burn off at much lower temperatures which is safer for the dpf.
It is highly unlikely that it s blocked due to your driving style unless you exclusively do very short duration journeys - as stated above there will be an underlying fault that needs to be repaired, then dpf cleaned with foam after which it should take care of itself.
Things to check - does the engine reach operating temperature? Are there any faulty glow plugs or a faulty glow plug controller? Air leaks on the induction system somewhere? Blocked pipe(s) to the dpf pressure sensor? Does the dpf pressure sensor read correctly?
You will need a decent scan tool or someone who can actually diagnose the underlying problem rather than trying a forced regen or gutting the dpf and remapping. This will be picked up in future when particle monitoring is included in the mot. Plus it s probably easier just to fix the fault.
mk08 said:
Can you suggest any decent scan tool. I have a bluetooth one I bought online very cheap and use 'EOBD Facile' app.
Scan tool is only half the battle, knowing how to use it and what to look for what you pay for.There are lots of issues with these, EGR, wiring, glow plugs, glow plug relays, ELOYs fluid overdue services ...... do you only ever run it around on a fiver of fuel .....
Before carrying out the regen, whats the engine condition like, when was the cmbelt last changed, when was the oil last changed
stevemcs said:
mk08 said:
Can you suggest any decent scan tool. I have a bluetooth one I bought online very cheap and use 'EOBD Facile' app.
Scan tool is only half the battle, knowing how to use it and what to look for what you pay for.There are lots of issues with these, EGR, wiring, glow plugs, glow plug relays, ELOYs fluid overdue services ...... do you only ever run it around on a fiver of fuel .....
Before carrying out the regen, whats the engine condition like, when was the cmbelt last changed, when was the oil last changed
stevemcs said:
mk08 said:
Can you suggest any decent scan tool. I have a bluetooth one I bought online very cheap and use 'EOBD Facile' app.
Scan tool is only half the battle, knowing how to use it and what to look for what you pay for.There are lots of issues with these, EGR, wiring, glow plugs, glow plug relays, ELOYs fluid overdue services ...... do you only ever run it around on a fiver of fuel .....
Before carrying out the regen, whats the engine condition like, when was the cmbelt last changed, when was the oil last changed
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