Martyn Very true, sorry I forgot that it can cause that issue but would need to be a big jump in temp. To cause piston holing. I agree what John plans to do is first step.
Regards, Adrian Sent from my iPad On 7 Jul 2012, at 09:08, Martyn J Culling <[email protected]> wrote: > Adrian > > Hotter running plugs - please no. > > If the plugs are correct - and if deposit laden, which I doubt they are, as > not just the plugs will have deposits this could well make matters worse and > create other problems. Overly hot running plugs risk burning a hole in > pistons - overly cold is safe, but will foul as self cleaning temperature is > not reached. > What John plans to do is very sensible. Has my vote! > > rgds Martyn > On Jul 7 2012, Adrian Slade wrote: > > Hi > > Having had experience of cross flows in Ford's, by your description it could > be the timing is out, but if this was the case then I would have expected it > to be running hot and a loss of power/ performance. it is more likely that > the plugs/valves have baked hard deposits on them due to it not being > converted to un-leaded and these are turning into glo-plugs that ignite the > fuel. > > If plugs have signs of heavy deposits baked on then try new ones that are > designed to get hotter. If this does not do the trick it is head off and > inspect the valves and take it from there. You do not say how many miles the > engine has done, do you get a blueish exhaust when cold, how much oil do you > use every, if so and it has done 80k plus miles then you may have worn oil > seal rings that are causing deposit build up on the valves. Sometimes on > lower mileages this can occur if the car has done lots of short journeys and > never gets warm up properly. > > Hopefully it will just be the plugs. > > Regards, > > Adrian > > Sent from my iPad > > On 7 Jul 2012, at 04:43, John Mott wrote: > > > Thank you for all the suggestions. > > It is not converted for unleaded, but I do use an additive. > > There is no pinking and it is not running hot. > > The plugs are only 14 months old and have only done 3000 km. > > I will try new plugs and check the timing and see if this fixes the problem. > > It has mainly only done short running lately, so maybe an "Italian Tuneup" > > may help. > > > > Regards > > John > > > > > > At 08:15 AM 6/07/2012 -0400, you wrote: > >> Hi. > >> Quite agree with David that ignition timing could be the culprit, indeed > >> the first thing I would check, as well as running on is it pinking as well? > >> If this is OK suggest you check condition of plugs, if these badly worn > >> could create a hot spot. Is the engine converted to unleaded or are you > >> using an additive? Worn valves/seats can also create a hot spots, do you > >> use the car regularly and use some revs.,a good high speed, revs not mph > >> may help. > >> Other things to check are the cooling system,is it running hot?, valve > >> clearance and any leaks in the inlet?,gaskets gone, worn throttle spindles > >> for instance. > >> > >> Cheers, > >> > >> Chas.. > >> > >> > >> -----Original Message----- > >> From: david.birch1798 > >> To: mogtalk2 > >> Sent: Fri, 6 Jul 2012 12:29 > >> Subject: RE: [mogtalk2] 4/4 Running On > >> > >> > >> You could try checking the timing. Recommended settings are given > >> variouslyas 8 degrees before TDC and 10 degrees before TDC.If it's set at > >> 10, try retarding to 8.TCDavid.-----Original Message-----From: John Mott > >> [mailto:[email protected]] Sent: 06 July 2012 10:42To: > >> mogtalk2Subject: [mogtalk2] 4/4 Running OnMy 1981 4/4 with 1600 crossflow > >> engine has lately developed an occasional habit of running on after I turn > >> off the ignition.It is easily stopped by letting the clutch out in > >> gear,Any suggestions of what is causing this and how to correct it ?John > >> Mott-------------------------------------------View posts on The Mail > >> Archivehttp://www.mail-archive.com/[email protected]/[http://www.mail- > >> archive.com/[email protected]/]Modify Your > >> Subscription:https://www.listbox.com/member/?&86Powered by Listbox: > >> http://www.listbox.com-----No virus found in this message.Checked by AVG - > >> www.avg.comVersion: 2012.0.2195 / Virus Database: 2437/5112 - Release > >> Date: 07/05/12-------------------------------------------View posts on The > >> Mail Archivehttp://www.mail-archive.com/[email protected]/ > >> [http://www.mail-archive.com/[email protected]/]Modify Your > >> Subscription: https://www.listbox.com/member/?&Powered by Listbox: > >> http://www.listbox.com > >> > >> > >> > >> ------------------------------------------- > >> View posts on The Mail Archive > >> http://www.mail-archive.com/[email protected]/ > >> [http://www.mail-archive.com/[email protected]/] > >> > >> Modify Your Subscription: https://www.listbox.com/member/?&; > >> Powered by Listbox: http://www.listbox.com > > > > > > > > > > ------------------------------------------- > > View posts on The Mail Archive > > http://www.mail-archive.com/[email protected]/ > > [http://www.mail-archive.com/[email protected]/] > > > > Modify Your Subscription: https://www.listbox.com/member/?&; > > Powered by Listbox: http://www.listbox.com > > > ------------------------------------------- > View posts on The Mail Archive > http://www.mail-archive.com/[email protected]/ > [http://www.mail-archive.com/[email protected]/] > > Modify Your Subscription: https://www.listbox.com/member/?&; > Powered by Listbox: http://www.listbox.com > View posts on The Mail Archive > http://www.mail-archive.com/[email protected]/ > Modify Your Subscription ------------------------------------------- View posts on The Mail Archive http://www.mail-archive.com/[email protected]/ [http://www.mail-archive.com/[email protected]/] Modify Your Subscription: https://www.listbox.com/member/?member_id=22459785&id_secret=22459785-4a39ddf8 Powered by Listbox: http://www.listbox.com
