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The Pub For General Automotive Related Talk |
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#1 | ||
FF.Com.Au Hardcore
Join Date: Mar 2005
Posts: 5,252
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Was just doing some you tube surfing for the EcoBoost 1.0 and this clip came up.....Its about the EcoBoost engines having excessive carbon build up behind inlet valves (common on DI engines) due to the direct injection and also the turbochargers are overrunning from excessively rich mixtures as a result of the carbon issues.
Just thought I would put this out ther as a small warning for future EB owners. https://www.youtube.com/watch?v=0irwbwpuEbQ |
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#2 | ||
Regular Member
Join Date: Oct 2008
Posts: 290
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Maybe running proper fuel (i.e. 98 RON) might prevent this issue. It's just as affordable anyway, due to better economy from advanced ignition timing. I wouldn't use anything else in a modern, technologically advanced engine, even if it supposedly can.
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2012 Ford Kuga Titanium (Mars Red) * 5 spd auto * ~170 000km odo * Mods: Fox cat-back exhaust, Simota CAI, larger intercooler, Spider iMode chip-tuning plug in. Engine responds very well to mods, but auto gearbox can become unsettled trying to cope with the extra torque. Good fuel economy overall: 9-12L/100km city, 8L/100 country. |
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#3 | ||
Virtuous Bogan (TM)
![]() Join Date: Jan 2005
Location: TAS
Posts: 27,565
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I dont put anything less than 98 in my 15 year old windsor let alone a modern engine!
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#4 | ||
Moderator
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Location: Foothills of the Macedon Ranges
Posts: 18,534
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Agreed. And a good quality synthetic oil.
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#5 | ||
FF.Com.Au Hardcore
Join Date: Mar 2005
Posts: 5,252
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Ye I reckon 98 would def help keep the intake system clean.
Last edited by GASWAGON; 04-10-2014 at 07:33 PM. |
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#6 | ||
FF.Com.Au Hardcore
Join Date: Aug 2008
Location: Brisbane, Qld
Posts: 3,321
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So there is a reason to use 98. In the past when someone says they use 98, they get a response saying "you should never use 98". But the reason is usually "because you don't need it".
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#7 | ||
Barra Turbo > V8
![]() ![]() Join Date: Jan 2005
Posts: 25,764
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The ST's Ecoboost is very picky with oil.
But yeah mine never gets less than 98, but my rear bumper is always covered in exhaust carbon.
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#8 | ||
FF.Com.Au Hardcore
Join Date: Feb 2005
Location: Melb north
Posts: 12,025
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I saw a bloke on the tube mentioned this popping up on some of the v6 engines as well, the question of different fuel formulas occurred to me to, I go along with the consensus that you don't run turbo engine on lower qaulity fuel regardless.
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#9 | ||
FF.Com.Au Hardcore
Join Date: Mar 2005
Posts: 5,252
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O.k i have never heard of that before but I suppose it makes sense. Turbo engines need a clean burning fuel.
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#10 | ||
FF.Com.Au Hardcore
Join Date: Dec 2004
Location: Canberra Region
Posts: 8,927
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Trouble is with DI engines you dont get the 'wash' of fuel sprayed over the back of the inlet valves to clean away the carbon. This is common to all makes, which is why decarbonising the intakes is recommended at regular intervals.
Toyota's DI engines also have port injectors for this reason.
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2016 FGX XR8 Sprint, 6speed manual, Kinetic Blue #170 2004 BA wagon RTV project. 1998 EL XR8, Auto, Hot Chilli Red 1993 ED XR6, 5speed, Polynesian Green. 1 of 329. Retired 1968 XT Falcon 500 wagon, 3 on the tree, 3.6L. Patina project. |
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#11 | |||
FF.Com.Au Hardcore
Join Date: Mar 2005
Posts: 5,252
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Quote:
What is actually involved in decarbonising at a service??? Last edited by GASWAGON; 04-10-2014 at 09:37 PM. |
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#12 | ||
Ich bin ein auslander
Join Date: May 2005
Location: Loving the Endorphine Machine
Posts: 7,453
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How can fuel in a DI engine reduce carbon build up behind the valves? BMW DI engines have the same issue, oil gets to the back of the valves but because of the DI it is never washed off by the fuel spray as would happen in a PFI engine.
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Growing old is compulsory, growing up is optional! |
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#13 | |||
Ich bin ein auslander
Join Date: May 2005
Location: Loving the Endorphine Machine
Posts: 7,453
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Quote:
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Growing old is compulsory, growing up is optional! |
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#15 | |||
Where to next??
Join Date: Oct 2006
Location: Sydney
Posts: 8,893
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Quote:
Yes, 98 is suggested and you would be wise to use it all the time but what does the book say?? If you use 91 will it adjust to the new fuel? Is it E10 compliant? When I had my Citroen in for a service once there was a big sign on the counter saying how E10 DOES NOT EQUAL regular 95 RON as a whole heap of customers were coming in with various issues after running E10 and assuming it was 99% match so 'good enough'.. Well there you go. Looked up the Fiesta Ecoboost 3cyl and the suggested fuel is regular 91 ULP.
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#16 | ||
Trev
Join Date: Apr 2006
Location: Was Perth, now country Vic
Posts: 8,017
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Good country run would probably fix all the issues
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#17 | ||
Bear with a sore head
Join Date: Dec 2004
Location: Adelaide
Posts: 3,701
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The Alloytec V6's, especially the early ones, are a culprit for excessive carbon build up right through the engine. Very poor crankcase ventilation is the main reason why. I'm not familiar with Ford's EcoBoost engine, but having extensive experience with Audi/VW engines, they too suffer from carbon build up behind the valves on their DI engines. I've used before, and recommend, the Subaru Upper Engine Cleaner. It works a treat on VW/Audi engines, so I'm sure that it would be just as effective on all DI engines - Ford included.
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#18 | ||
FF.Com.Au Hardcore
Join Date: Jul 2005
Location: Victoria, The no fun state
Posts: 1,668
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I have had several Subaru's over the years and I always used the upper engine cleaner on them you could tell a significant difference when the valves and intake were starting to carbon up.
Put a can of the upper engine cleaner into it and all good again you can actually tell a difference in performance/economy/idle I did it every 20k on mine when I had them |
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#19 | ||
FF.Com.Au Hardcore
Join Date: Aug 2012
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#20 | ||
Thailand Specials
Join Date: Aug 2009
Location: Centrefold Lounge
Posts: 49,052
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Chuck on a water/methanol injection kit, cleans up inside the engine, valves and EGR systems quite nicely
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#21 | |||
FF.Com.Au Hardcore
Join Date: Oct 2010
Location: W.A.
Posts: 1,713
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Quote:
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His: 2019 Ford Focus SA Trend with Driver Assist Pack: 1.5 Ecoboost 3-cylinder (yes, 3 cylinders!), 8-speed automatic in Ruby Red. ![]() Hers: 2020 Ford Puma JK: 1.0 Ecoboost 3-cylinder, 7-speed DCT in Frozen White. |
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#22 | ||
FF.Com.Au Hardcore
Join Date: Oct 2010
Posts: 1,031
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I'm amazed no one has come up with some sort of system that injects some form of fuel or solvent up stream in the air now and then so it cleans the inlet valves
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#23 | ||
FF.Com.Au Hardcore
Join Date: Mar 2005
Posts: 5,252
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Running injected LPG seems to be the only way around the problem. But that puts an extra cost onto car initially the same as your idea would.
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#24 | ||
FF.Com.Au Hardcore
Join Date: Apr 2008
Posts: 5,429
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Hi. That creates other problems, the main one being that the factory fuel injectors get cooked with no fuel running through them to keep them cool. A DI engine should have a special "2 fuel injector" that can handle petrol and LPG. Cheers MD
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![]() HI ![]() I'M MICHAEL ![]() 2003 ACID RUSH BA FUTURA WAGON ![]() light up window switches | auto on cruise control | doubleclick window lift from remote |
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#25 | ||
Barra Turbo > V8
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Posts: 25,764
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Not even remotely interested in LPG in any car, dont care what form it is.
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#26 | ||
FF.Com.Au Hardcore
Join Date: Mar 2005
Posts: 5,252
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#27 | |||
Thailand Specials
Join Date: Aug 2009
Location: Centrefold Lounge
Posts: 49,052
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Quote:
It atomises water/methanol mix (30/70 or 50/50) through an injector running at high pressure, anywhere from 150-300psi. |
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#28 | ||
FF.Com.Au Hardcore
Join Date: Sep 2014
Location: Catland
Posts: 3,637
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Yes carbon builds up in the VW turbo petrols.
One way to stop is to run a fuel with less carbons in the chain eg ethanol BUT only if the engine is tuned/designed to run it. Ethanol engines run much cleaner. I also know VW have created an ethanol only version of their 1.4 for the Brazilian market.
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#29 | ||
Barra Turbo > V8
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Posts: 25,764
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Doesnt interest me at all. There is no way in hell id put any kind of LPG in my ST. Ive had a cpl LPG powered cars and id never do it again. Putting LPG or the likes in my current car is absolutely pointless when the fuel econ is pretty good as it sits. Even with a tune on my car it would be more beneficial to keep it on PULP. LPG in a hot hatch is useless IMO. But each to their own.
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#30 | ||
Pity the fool
Join Date: Jan 2007
Location: Wait Awhile
Posts: 8,997
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LPG really only makes sense for larger cars, if you're talking purely about economics. For performance (if you don't care about efficiency) then LPG wins over petrol - provided the appropriate system is used (i.e. liquid injection).
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