Engine Decoke as seen on Wheeler Dealers (Terraclean?)
Discussion
Did anyone see the episode where Ed decoked the entire fuel system/engine apparently with a device that plugs into the fuel rail?
Assume there has been a previous post on this but the antiquated search facility didn't pick it up for me.
Anyway, anyone done, it? What are benefits/downsides? Thinking of doing it on my S4 to give the internals a spring clean - also got me thinking of the RS4 common issues of coking up that loses bih BHP and results in the need for head off decoking (£££)
Assume there has been a previous post on this but the antiquated search facility didn't pick it up for me.
Anyway, anyone done, it? What are benefits/downsides? Thinking of doing it on my S4 to give the internals a spring clean - also got me thinking of the RS4 common issues of coking up that loses bih BHP and results in the need for head off decoking (£££)
I've had it done on my very high mileage Astra van & my old 3.5ton Iveco. If you believe all the bumf there are a multitude of reasons to get it done ranging from lower emissions (even if high enough to fail an mot) to extending engine life, what it also can do is correct spray patterns from dirty injectors. The benefits will be less on a newer car that does mostly motorway miles than a car that potters around town sitting in traffic.
For me the reality is that both vehicles now run smoother & both get slightly higher mpg. I will have at least my old Astra van done at yearly intervals.
Edited. Both those vehicles are diesels.
For me the reality is that both vehicles now run smoother & both get slightly higher mpg. I will have at least my old Astra van done at yearly intervals.
Edited. Both those vehicles are diesels.
Edited by smartphone hater on Saturday 30th June 09:40
Willy Nilly said:
Why would you need to de coke a properly serviced car?
where does he say his car is propperly serviced ?OP, it's more a way to remove the gum and residue from the fuel system as it is a de-coke, any well running EFI engine will need a minimum de-coke but gums and varnishes will build up over time and that's the bit that really gets the engine running sweeter and so prevents carbon build up (which is a by product of incompleat combustion), spray patterns and fuel attomisation is important when it comes to the fuel burning cleanly and efficiently and unless you are a regular with the fuel system cleaner in the tank it's a worthwhile job to have done.
smartphone hater said:
I've had it done on my very high mileage Astra van & my old 3.5ton Iveco. If you believe all the bumf there are a multitude of reasons to get it done ranging from lower emissions (even if high enough to fail an mot) to extending engine life, what it also can do is correct spray patterns from dirty injectors. The benefits will be less on a newer car that does mostly motorway miles than a car that potters around town sitting in traffic.
For me the reality is that both vehicles now run smoother & both get slightly higher mpg. I will have at least my old Astra van done at yearly intervals.
Edited. Both those vehicles are diesels.
If you don't mind me asking, what was the cost of each vehicle?For me the reality is that both vehicles now run smoother & both get slightly higher mpg. I will have at least my old Astra van done at yearly intervals.
Edited. Both those vehicles are diesels.
Edited by smartphone hater on Saturday 30th June 09:40
E30M3SE said:
If you don't mind me asking, what was the cost of each vehicle?
Roughly between £75 & £80 inc vat.Edited. I just noticed you're in herts. If you're anywhere near the Essex border & Dunmow that's where I got both of mine done, I've known the family who own the garage about 20 years & can highly recommend them. If you want the details I can PM you.
PS. I am not affiliated with them in any way, shape or form.
Edited by smartphone hater on Saturday 30th June 23:18
I don't remember the details of the WD program but wasn't it an XK8 they were doing and it had high emissions, the cleaned it with the gizmo and emissions were then fine. Isn't that proof it works.
I'm really not into these snake oil type cure alls but this was the first none mechanical decoke I've seen that looks like it works. That and long motorway journeys but even motorway miles won't clear gummed up injection.
Quality of servicing won't stop a car that's used for local journeys from coking up.
I'm really not into these snake oil type cure alls but this was the first none mechanical decoke I've seen that looks like it works. That and long motorway journeys but even motorway miles won't clear gummed up injection.
Quality of servicing won't stop a car that's used for local journeys from coking up.
Silent1 said:
All the posts recommending it on this thread haven't provided any real evidence that it either works or is needed and as the same goes for those fuel additives I would say it's pointless.
How does one prove their vehicle runs smoother & gets higher mpg? I thought the same as you & I am by nature a sceptical person. They should me photos taken with a mini camera inserted through an injector hole of the top of a piston before & after the treatment, the difference was black piston before & silver after.
I know you're thinking "yeah right" but I've known this family 20 years & I have no reason to believe they were giving me bulls
t. Hmm. I've taken the head off my 150k mile GTE and I nearly didn't bother lapping the valves in again, such was the overall clean condition of the engine.
Has there been a running fault that's caused the engine to run rich for a while? If not, and a 'crap Vauxhall' doesn't need a decoke after 150k, why would a flash S4 need one?
This is a genuine question, not a sarcy comment. I thought decokes were left behind in the era of carbs etc. Saying that, my 1.3 Astra was good after a similar mileage.
Has there been a running fault that's caused the engine to run rich for a while? If not, and a 'crap Vauxhall' doesn't need a decoke after 150k, why would a flash S4 need one?
This is a genuine question, not a sarcy comment. I thought decokes were left behind in the era of carbs etc. Saying that, my 1.3 Astra was good after a similar mileage.
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