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No limp mode....just a warning light in this case..... I think the fuel/air mix refers to how well they mix when the air is turbulent....rather than quantities of each??? Surely this would apply to any combustion engine? Although happy to stand corrected. I also experienced better...

Hi buddy, How many miles has the car done? As above I've been through this process....the problem for me was the EGR...which over 100k had clogged up the swirl valve and the manifold as a whole.... Re function: http://en.m.wikipedia.org/wiki/Swirl_flap Basically they help create turbulence...

Carefully scrape out as much as you can with a long screwdriver Plenty of brushes....tooth brushes x 3, a cheap stiff wheel brush small and large if you can for ports Latex gloves a plenty Selection of cleaning agents....solvents and degreasers I used neat G101 Hose connected to a hot water...

Give yourself plenty of time believe me that junk took one hell of a lot of cleaning out! Re the fuel pipes be careful not to over tighten them....if they don't seal first time take back off and try to reseat. Make sure you take some pictures!

Thank you Jon for correcting me....I'm no technical expert....but the engine is definitely running better...more power....and less noise especially under load...guess that's when the noise increases on most engines. Given what we cleared out its obvious that performance will improve....bit...

Quick update... Re noise I can report that the engine is running quieter....particularly under load....had suspected the timing chain might have been at fault, but now I suspect the noise was pinking from poor air flow...this noise has pretty much disappeared since the decoke....

Hi guys, Just a quick update today....popped the car over to Ben's workshop and he refitted the leaking fuel line....checked carefully and seems to have sealed....I have a longer journey this weekend so will keep an eye on it. Engine has definitely settled down...and does seem quieter and is...

Fuel pipes and fuel rail: No washers and shouldn't be overtightened.....

Not sure if any quieter but pulled much better....in fact it goes like stink! One weeping pipe going to refit tomorrow...will let you know how I get on.

You're welcome great to be giving something back....on the shoulders of giants.....

Ok so next up we tried to start her but for some reason battery seemed a little weak so ended up having to jump her....big puff of smoke out the back and idle a little off as ECU took its time over recovering from the shock of being able to breath again after 100,000 on 40 a day. Soon settled...

Part II Ok coke seemed to get rid of some of the carbonisation but oily deposits were pretty much untouched.... Spent two hours hitting the manifold with brake cleaner, Autosmart Tardis, and finally neat Autosmart G101 agitated with my old EZ wheel brush, while my star tech Ben cleaned the...

Will have to wait and see.....but joints are in excellent condition and in worse case could seal but really not expecting any issues there....my friendly tech will be helping me and this process is not new to him...no washers but will take some pics Off out to check on how well the coke has...

Tried to like but reached my maximum positive votes for the day

Can't believe it won't make a difference Looking forward to seeing how effective a cleaner the coke is....but will have some more brake cleaner to hand as well.... Update tomorrow!

In reckon around 1/2 a kg, and more being dissolved as we speak! Tbh it was running ok....but once the airways have been cleared out I am hoping for a further step up in performance....

Hi guys, Thought I'd share my latest efforts to improve the running of my trusty Tourer.... Having dealt with the EGR issue I decided to give the butterfly valve a good clean up, and go one step further and de-coke the inlet manifold, have noticed some pretty heavy carbon deposits in the pipe...

Great write up !

Hi buddy, I have a tourer and went for the Witter detachable with a flanged tow bar....does require a small cut to the bumper but not visible and you can detach it when not in use which I prefer tbh. The flanged tow bar is great as you can fit a bumper protector which would not normally be an...

Thanks Fahad, quite looking forward to getting my hands dirty at the weekend....and even more seeing the impact from removing and cleaning the inlet manifold itself! I am sure a clear air flow will make a big difference!