artscot79 Posted March 31, 2014 Share Posted March 31, 2014 Gaps are incorrect Bosch are pregapped at an old spec to prevent rough idling missfires and coil issues the petrol should be set at 1.0mm on Bosch 1.1mm on ngk ford will also state if you had them check that the plug gaps at 1.3mm are wrong also as due to lead and coil failures a technical service bulletin went out to reduce the gap from 1.3mm to 1.0mm so yes 1.3 is wrong has been for years now Quote Link to comment Share on other sites More sharing options...
Hillkidstr Posted March 31, 2014 Share Posted March 31, 2014 Never knew that wonder why autodata sates 1.3mm? Would that mean that all the sparks sold for the focus have been incorrectly gapped? My current Denso have shown no symptoms of a wrong gap, have you got a link to the technical bulletin? Would be interested in reading it not doubting you just wondering why current plugs are still gapped at 1.3mm and not the revised 1mm? Umm just thinking I never checked the gap on the Denso the Bosch ran crap and where gapped at 1.3 when I checked, umm this does make sense now you mention it will pull one of the Denso and check the gaps out of curiosity. Just so you know I ain't doubting you just surprised that info ain't been updated. Should of known this but with 4 cars to look after it gets confusing. Sent from my iPhone using Ford OC Quote Link to comment Share on other sites More sharing options...
artscot79 Posted March 31, 2014 Share Posted March 31, 2014 Its been known for a long time it was ford who showed me the tsb when mine were incorrectly gapped at 1.3 denso plugs are gapped at 1.0mm out the box Bosch plugs are gapped at what Bosch state is the gap but after the running issues etc ford found decreasing the gap fixed the issues its standard for ford on a service to narrow the plug gap ngk do 1.0mm plug gap also http://www.fordownersclub.com/forums/topic/39946-electrode-gap-on-16-engine/ Quote Link to comment Share on other sites More sharing options...
Hillkidstr Posted March 31, 2014 Share Posted March 31, 2014 Cheers for that, something to remember for future ref. Don't trust main dealers way to many issues for my liking tried a ford main dealer for a simple service found out the oil filter hadn't been changed (uv pen) had trouble with Mercedes and Suzuki as well never took the other car fiat to a garage so I just work on them all my self I may miss out on some info but at least I know the works done. Sorry for the mini rant. I guess it would also only be main dealers who would reset the plug gap as a lot of garages use autodata that still states 1.3mm for the motorcraft/bosch and NGK plugs. Sent from my iPhone using Ford OC Quote Link to comment Share on other sites More sharing options...
Valleyboy22 Posted March 31, 2014 Author Share Posted March 31, 2014 So I need to set the correct gap which is? Also I will have to buy a gage then because I aint got one? Cheers Sent from my GT-I9505 using Ford OC mobile app Quote Link to comment Share on other sites More sharing options...
Hillkidstr Posted March 31, 2014 Share Posted March 31, 2014 Just looking up the plugs I said are already gapped at 1.00mm so I don't think you will need a gauge. Sent from my iPhone using Ford OC Quote Link to comment Share on other sites More sharing options...
Valleyboy22 Posted March 31, 2014 Author Share Posted March 31, 2014 They be the ngk iridium ones? Sent from my GT-I9505 using Ford OC mobile app Quote Link to comment Share on other sites More sharing options...
artscot79 Posted March 31, 2014 Share Posted March 31, 2014 correct gap 1.0mm on all ford plugs as said some are now pregapped at 1.0mm some at 1.3mm still Quote Link to comment Share on other sites More sharing options...
Valleyboy22 Posted March 31, 2014 Author Share Posted March 31, 2014 Seen plug removal tool on eBay and guess I need a 10mm one to take my old ones out to put new ones in? Sent from my GT-I9505 using Ford OC mobile app Quote Link to comment Share on other sites More sharing options...
higgsy Posted March 31, 2014 Share Posted March 31, 2014 14mm socket mate. Sent from my Zetec S using the FOC for Android app Quote Link to comment Share on other sites More sharing options...
higgsy Posted March 31, 2014 Share Posted March 31, 2014 Also I am still convinced the mk2.5 should be gapped at 1.3mm if you look in the online catalogues such as NGK it shows 1.0mm (tr5a-10) for 04-07 mk2 and 1.3mm (tr5b-13) for 08-11 mk2.5. Sent from my Zetec S using the FOC for Android app Quote Link to comment Share on other sites More sharing options...
higgsy Posted March 31, 2014 Share Posted March 31, 2014 14mm socket mate. Sent from my Zetec S using the FOC for Android app *long socket Sent from my Zetec S using the FOC for Android app Quote Link to comment Share on other sites More sharing options...
Valleyboy22 Posted March 31, 2014 Author Share Posted March 31, 2014 Cheers will get a 14mm socket to remove them. Sent from my GT-I9505 using Ford OC mobile app Quote Link to comment Share on other sites More sharing options...
artscot79 Posted March 31, 2014 Share Posted March 31, 2014 sorry to say the 1.3mm is wrong and has been for years if youve ever had a service at ford youll likely find the original plugs are gapped at 1.0mm its a tsb so is meant to be done at a service anyway even Bosch state this in there catalogue Spark plug, Laser Platinum (HR 8 NPP 302) gap 1.0mm many forums will tell you the same call ford they will also tell you the same Bosch recommend 1.3mm for certain plugs this was found to cause running issues and coil pack and lead failures so ford found the fix was to reduce the gap and a tsb was put out Quote Link to comment Share on other sites More sharing options...
Valleyboy22 Posted March 31, 2014 Author Share Posted March 31, 2014 Rang my local motor factor for ngk and he said they are set to 1.3. Sent from my GT-I9505 using Ford OC mobile app Quote Link to comment Share on other sites More sharing options...
higgsy Posted March 31, 2014 Share Posted March 31, 2014 My car is a 2010 and came with NGK r tr5b-13's from the factory gapped at 1.3 mm ( I know this as I have all service receipts/checklists and plugs had not been changed previously. Not saying there was not a tsb for this but personally I think whatever issues there were were for earlier cars/ engine revisions , were resolved later on or why would ford still be fitting plugs with a gap of 1.3mm to cars in 2010? Sent from my Zetec S using the FOC for Android app Quote Link to comment Share on other sites More sharing options...
Valleyboy22 Posted March 31, 2014 Author Share Posted March 31, 2014 Might just fit them and go from there. Sent from my GT-I9505 using Ford OC mobile app Quote Link to comment Share on other sites More sharing options...
artscot79 Posted March 31, 2014 Share Posted March 31, 2014 speak to ngk all you want you arent listening the manufacturer of the plug recommends a gap of 1.3mm this lead to an issue with the leads failing and coil packs misfiring and stuttering ford looked into it and found the plug gap was the cause after tests it was found lowering it to 1.0mm solved the issue hence the ford tsb if you want an answer on a ford car ask ford not ngk as they wont know now fit 1.3 if you wish but it wont help the car at all and will be inefficient if ford have ever touched youre plugs they will be at 1.0mm why do people insist on arguing call ford ask them theres the simple answer it is for a fact 1000% 1.0mm ford do not fit plugs with that gap they regap them as per the tsb as stated already it wasnt resolved as the mk1 mk2 and 2.5 all use the same leads plugs and coil packs Quote Link to comment Share on other sites More sharing options...
Valleyboy22 Posted March 31, 2014 Author Share Posted March 31, 2014 is it easy to alter the gap if I get a gauge? Like I said I was told the are pre gapped to 1.3mm and will alter them to 1mm when I do it Quote Link to comment Share on other sites More sharing options...
artscot79 Posted March 31, 2014 Share Posted March 31, 2014 1.8 115bhp (for engine codes EYDC , EYDD , EYDE , EYDB , EYDF electrode gap to be set 1.0mm) 2.0 131bhp (electrode gap to be set 1.0mm) 2.0 RS 215bhp new Bosch plugs Ford Focus MK.2 petrol engines 1.4 & 1.6 Electrode Gap: 1 mm NGK Spark Plugs Set For FORD FOCUS C-MAX 1.6l - TR5A-10 No. 0005 x4 Pack the 10 represents gap 1.0mm http://www.eurocarparts.com/spark-plugs as you see the list even for ngk states 1.0mm as does haynes Quote Link to comment Share on other sites More sharing options...
artscot79 Posted March 31, 2014 Share Posted March 31, 2014 very easy just insrt the gauge between the egap and tap the electrode on something flat sometimes pushing with youre finger works till there is slight interference between the gauge and electrode apply some dilectric grease to the tip of the plug once its been refitted and to the coil end of the leads Quote Link to comment Share on other sites More sharing options...
Valleyboy22 Posted March 31, 2014 Author Share Posted March 31, 2014 just ordered a gauge so will pick the plugs up on way home from work tomorrow and will also pick up a tool they sell to get them out because the cheap socket set I get wont reach the plugs. Quote Link to comment Share on other sites More sharing options...
Valleyboy22 Posted March 31, 2014 Author Share Posted March 31, 2014 can anyone point to a right size removal tool please pref eBay so I can order one because my local motor factor was £15 for one,14mm socket set I guess I need but to afraid to order one encase its wrong? Cheers Quote Link to comment Share on other sites More sharing options...
artscot79 Posted March 31, 2014 Share Posted March 31, 2014 14mm is the correct size tool Quote Link to comment Share on other sites More sharing options...
Hillkidstr Posted March 31, 2014 Share Posted March 31, 2014 14mm is the correct size tool Just had to double check my tool sets to make sure I wasn't going crazy but in all 4 of my sets with spark plug sockets I have a 10mm and a 14mm one so I grabbed one of the old plugs that was in my focus well 2 different makes and both fit the 10mm spark plug socket? so why is it 14mm starting to think if we are talking about a different engine and not a focus with a 1.6 petrol engine here? a 10mm spark plug socket has a rubber insert which not only protects the insulator but aids in installing and removing the plugs. Don't ask me why but a 10mm spark plug socket is larger than a 10mm normal socket. checked this in all 4 tool sets. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Ford UK Shop
Sponsored Ad
Name: eBay
Ford Model: FordUK Shop
Ford Year: 2024
Latest Deals
Ford UK Shop for genuine Ford parts & accessoriesDisclaimer: As the club is an eBay Partner, The club may be compensated if you make a purchase via the club
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.