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Is it really the vaporiser/pump at fault here or another side issue?

15K views 4 replies 5 participants last post by  turbopete1  
#1 ·
Mk4 2010 Mondeo Auto . Euro 5. 2.0TDCi. TBXA engine. The performance was down and Engine Malfunction light on (still is) . Could not high rev it as it is an automatic so had the DPF cleaned. It is now driving as it should and revving freely.

After 20 miles engine malfunction light came back on. Codes refer to DPF problem but it is certainly not blocked but is not regenerating and as it is auto it cannot be forced to regenerate. The codes point to the lack of regeneration due to the temperature not being high enough to start the process.

This points to the vapouriser ( vaporizer, vaporiser) and possibly pump whose purpose it is to increase the temp?

Removing these to clean looks dodgy as they look easy to break? Any advice please from those who have an answer as guesses have only confused the issues so far and been expensive?

I could be replacing parts for the hell of it but it is getting costly. Thanks.
 
#4 ·
I replaced the vaporiser on my car in March. They get blocked up with soot/carbon which means it can't spray diesel into the exhaust (to raise the temps) for a regen.

I did clean the old one but it didn't work (possibly damamged the wire to the glow plug as I undone it - red wire).



This is the setup on the 2.2 diesel.

 

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#5 ·
as above. the vapouriser provides a fuel vapour and heat to the DPF to regen so absolutely NO need to rev them hard to get them to regenerate.

as for removing the vapouriser, ive changed mine recently and they come out quite easily. do check the fuse under the bonnet for being blown (F6 from memory but not sure now, i just know it when i see it) as thats a good indicator of the vapouriser being faulty. first time mine blew, i cleaned the vapouriser and it was fine for a year or so, then the fuse blew again and a replacement vapouriser cured the problem.