Walnut Blasting, My Experiences.

[Toxic]

Is this now a verified fact ?

Premium fuel would keep the combustion chamber cleaner but has no effect on the inlet manifold or back of the intake valves, the build up is from the PCV systems throwing oil/smoke deposits onto hot valves and baking on.

[Chris_Blue]

Thought it was recommended in the Citroen handbook?
Qulity fuel burns cleaner- fact. (End)

[lfcrule1972]

So it's a Blue-ism that premium fuels will have any effect on carbonisation - Not a fact…. Just wanted to be clear on that… [END]

[Jamie@SPTuning]

Scratch

[Toxic]

Yep fuel burns cleaner if using quality fuel, just the inlet ports are not affected by the burn of the fuel. you will however get carbon build in the combustion chamber, exhaust port, Turbo splines(exhaust) Lambda Sensors, Catalytic convertor if using crap fuel.

Fuel cleaner like BGK44 will help with that and so does the full terraclean service, which uses its own fuel and cleaning agents to run the engine for approximately 30 minutes.

[BeefMasta]

Beefmasta- how many miles, and how was yours when you traded it in- any issues?

23995 miles when I traded it in. No issues for the life of the car, still made me smile as much on the way to drop it off as the first week I collected it.

[Superfly Guy]

I didn't really notice my gradually diminishing performance until about 24K, then it went downhill pretty quickly. I would imagine driving style and fuel might have a significant impact on how quickly it builds up.

[FLP]

Driving style certainly has an impact. Been confirmed by someone who oversees damage claims / recalls / warranty issues for PSA. He told my father in law it's better to drive the car hard, get in those higher revs when it's up to temperature. Less chance of carbon build up that way.
Btw, he also admitted (off the record) the known issues with the timing chain and tensioner..

[Jamie@SPTuning]

I didn't really notice my gradually diminishing performance until about 24K, then it went downhill pretty quickly. I would imagine driving style and fuel might have a significant impact on how quickly it builds up.

Same for ours...

[Chris_Blue]

I would imagine driving style and fuel might have a significant impact on how quickly it builds up.

Cant imagine you as a " toodle around" sort of guy... Superfly.

[SteveD]

Two weeks since I had the pleasure of Jamie at SP Tuning and the Walnut blasting. Car is the DS3 150 THP with 41K on clock. Car was running like a bag of sherbet ( not the word I would normally use). Car had been back to Citroen a few times but never really fixed issue. Now goes like the little rocket it was supposed to be. Fuel consumption has gone from low 40 to high 40 nudging 50. All this at a 1/5th of the cost quoted by local worship. If you have a misfire/hesitation and it’s not the cam chain Jamie is the go to guy. I drove up from Dorset had two nights in a hotel and still spent less than half the price I could have paid.