Fordoholic Nick wrote:Hi all
Chaps bit of advice please.
One of my core plugs needs replacing as after a bit of a panic yesterday fearing the worst after seeing that water was leaking pretty fast onto the garage floor just before taking for a drive. I then seen it was coming from the recess of the plug. John (from sunny Spain) quickly calmed me down confirming panic over and that it was the core plug needs replacing. Indeed Neil spotted early signs of this at The Ace last year as some staining was present around the recess but no leak itself. Now its deffo leaking I need to replace. Closer inspection and it looks like its got 'history' and a tad corroded poss from a previous leak ? Anyway its getting replaced !
As I have not done this job before my question is if any sort of sealing compound is required when fitting the new one or does the new one just get banged in without. Am guessing no sealing compound as it needs to be able to 'move' if required in the future.
Any advice appreciated
All the best
Fordoholic Nick wrote:Hey thanks guys.
Paul when you say you smear a bit of Chemical Metal do you mean the expoxy filler stuff ?? I am worried I might seal in the plug permantly knowing me !!
Is there much pressure on these plugs under normal driving conditions ??
Paul G wrote:I wasn't very clear explaining what I meant. After you have fitted the new plug I would just run a thin smear of (yes epoxy would be ok) around the joint between the block and the core plug. It's a belt and braces thing and could stop any future weeping. If the mating surface in the block cleans up perfectly then this would probably be unnecessary. Don't put it around the core plug before fitting as it could make fitting it difficult - it's what's called an interference fit wherby the plug will be machined either the same size or a microscopic bit larger than the hole in the block to hold it in place and allow for expansion when the engine gets hot.
Under normal driving conditions it will only be under standard cooling system pressure which is a considerably less than the force you will have to use to remove and refit the plug.
Paul G wrote:The rear one on the back of the head is a c**t to do and is easier and probably quicker to do with the head off, but there is also one on the back of the block which would mean removing gearbox, clutch and flywheel. Ouch!
Jasonmarie wrote:So I was wrong I never used sealant I just used grease but the hole must be really clean and check no damage to the block.
Jasonmarie wrote:Always the way with a quick job Best of luck with MOT time and keep us posted on the job also some how to pictures would be good .
Paul G wrote:It might pay to have a good good look at the other core plug while you've got everthing dismantled. It would be a PITA if you have to go through all the rigmarol again in a few months.
Paul G wrote:Don't forget to wash off any coolant mix that gets splashed on the paintwork.
Good luck and give me a shout if you are stuck.
andyd wrote:Good for you having a go yourself Nick. Personally I can't even be bothered to do an oil and filter change anymore......Will get it done in April with the MOT
andyd wrote:I don't have that problem, shes glad to get rid of me for the day
andyd wrote:Hi Nick,
Have you sorted the core plug yet ?
Fordoholic Nick wrote:andyd wrote:Hi Nick,
Have you sorted the core plug yet ?
Thanks for asking mate but Jason summed it up pretty well apart from the PJs
Mate I was hoping to get cracking on it over Easter to get the manifold off and plug replaced but yep just as Jason said I have been out of action the whole of Easter with a really bad bug/flu of some kind so was deffo not in the right frame of mind to do it. I have a couple of bits I wanted to get coming from Martin this week so will now wait till I get these so have everything I need. Did not forget to get some exhaust jointing paste !!!
I still aint firing on all 4 cylinders now and am now on a crazy early shift at work...up at 0345am so was kinda thinking to do it after work this weekend but will see how it goes. John very kindly said he would pop over to keep an eye on me if I do .
I am on holiday for 16 days weekend after next anyway so if not this weekend then I will deffo get it done during my hols. B112 is in the garage so am not getting stressed over it and mot expired anyway so I dont need to race to get it done for that....but this now means my first proper test of the core plug when fitted will be the drive down to my mot chap for the mot !!!
What can possibly go wrong Andy.....
As soon as I get the job done I will update here mate. It seems like agesssssssssssss since I last drove B112 but all good things come to those who wait....
All the best
PS Sorry for my extended answer to your question but you did ask !
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