c4 picasso

[gouldianfinch13]

hi,i have a c4 picasso 1.6 hdi 110.does anyone know the wiring for the glow plugs,the car in summer as started ok.has soon as it got cold,its nit starting good miss firing,had this on my Xantia and the glow plugs were shot,replaced glow plugs along with the relay in front of the battery,still gives fault.no fault with diagbox,any help

[GiveMeABreak]

Hello and welcome to the Forum.

If you Post up your VIN, we may be better able to assist you.

[Peter.N.]

Being an Hdi I doubt that it is the glow plugs although I have had no experience with the 1.6 so I could be wrong.

Peter

[RichardW]

You changed the glow plugs on a 1.6 HDi Picasso??? Respect!!!

As Peter says though, it's unlikely to be the glowplugs.

Ours is more reluctant to start than my 307 - I suspect the starter is a bit poor and cranking speed is low. It was also getting difficult to start earlier in the year, but it had to have injector seals and a new injector, which improved the starting no end - not sure if this was down to a loss of compression, or if the injector was duff anyway.

How does it start? Long crank, and then run, or struggle into life with clouds of smoke?

[gouldianfinch13]

starts on the button,vin no is VF7**************[VIN obfuscated, can be read by forum staff]

[GiveMeABreak]

Basic Vehicle Info:
C4 Picasso, Family Saloon, 1.6 HDi, 110, Piloted Manual Gearbox.
Year: 2010
With Particulate Filter
Engine: DV6TED4 FAP
Injection Variant: Bosch
Transmission: 6-Speed Controlled Manual Gearbox
Clutch: Without Clutch
Diff: Without Gearbox Diff.

[gouldianfinch13]

does any one know where the temp sensor is for the cold start.

[chris222333]

The temp sensor is the green plug on the thermostat housing if the sensor is shot it will thing the engine is cold all the time and over fuel afaik. Try unplugging maf sensor to see if the misfiring stops

[RichardW]

There's no overfuel on a cold start on a diesel - a slight advance to the timing to help avoid the knock, but that's about it!

Could be a duff injector, or if it's done plenty of miles, worn cam chain (the two cams are linked by a short chain) putting the timing of the exhaust cam out.

[gouldianfinch13]

chris 222333,do you mean the manifold air pressure sensor