Fuel problems

[Anonymous]

I have owned a 156 sport (61 plate) or around 18 months - no problems really, new tyres and that's it. Until recently that is. I went South for the weekend - 100 miles or so. At return home time, on comes the EMS light (Sunday morning of course). Out come the AA, diagnostic plug in time - misfiring on cylinder 4. Long story short, I have had to leave the car in its location and make the journey home to the Midlands by other means. The local Peugeot dealer to where the car is have advised the a 'decoke' is required and a replacement fuel pump - potentially a £1700 bill. I have been advised that the decoke bill will be met in full by Peugeot, leaving me to make a contribution to the cost of the fuel pump. My question - has anyone else had a fuel, carbonising / decoke problem?

 

[DKZ5745]

Oh I think a quick search will show that problem has reared its ugly head quite a few times on here. I'm pretty sure the high pressure fuel pump has had its problems before too, but notsure about the fuel pump in connection with decoking though :eusa-think:

 

[Anonymous]

As DKZ suggested, this is not unknown. These engines can be prone to this. Can I ask what fuel you use? It's thought that higher grade premium fuel such as V Power Nitro might help to reduce this problem, although not necessarily prevent it entirely. Good news that Peugeot are going to cover the bulk of the costs though. :thumbup:

 

[Anonymous]

Thanks DK and Rizzle.

I use ordinary unleaded - not told otherwise, although I have used higher grade fuels with previous vehicles (not Peugeots). Interestingly I have had two opposite views on this - both from Peugeot dealers. The dealership doing the work recommend high grade fuel for various reasons (one of which concerns the speed at which the fuel is drawn through the pump !). Also, the service manager is an RCZ owner and its his view (could simply be personal opinion of course). The dealer who sold the car to me takes the opposite view, i.e. it doesn't matter and that it has a direct impact on economy and running cost of course.

One manufacturer, one vehicle, two dealers and two differing opinions.

Confused.com

 

[DKZ5745]

I think that it is a generally accepted fact that higher grade fuel, especially it seems Shell V Power Nitro, gives greate fuel economy and higher performance.
Another consequence due to the cleaner burn of this octane fuel is less coking of engines.

This fuel is of course slightly more expensive than standard grade fuel, especially supermarket brands, but I think that the results speak for themselves, and in my opinion it is more or less a no-brainier whether to use higher grade fuel(super unleaded).

I have always used higher octane fuel, and in recent times I have tried to ensure only V Power nitro goes into my Z. The only downside for me is that the closest Shell station is some 4 miles away, so I have to try to time fills with journeys in that direction, otherwise trying to justify an 8 mile round trip to the OH can be a bit tricky :eusa-think:

 

[RCZ-Performance]

Shell Nitro or any other high grade fuel is recommended and drive it hard at times. Lower grade fuel and short trips will create the problem again.