Ian Lanc Posted April 23, 2017 Share Posted April 23, 2017 If no one has seen the Youtube link I put up here it is again. 2 Quote Link to comment Share on other sites More sharing options...
MJNewton Posted April 23, 2017 Author Share Posted April 23, 2017 That clip is more for the threads; in my case it was definitely the o-ring hence why the innards stayed within the bottle. (Edit: To be fair, having now watched it all the way through I see that they do wipe the inside too) 2 Quote Link to comment Share on other sites More sharing options...
dezwez Posted April 23, 2017 Share Posted April 23, 2017 what happens if the grease get in the coolant will it do any harm Quote Link to comment Share on other sites More sharing options...
MJNewton Posted April 23, 2017 Author Share Posted April 23, 2017 Silicone is very inert so is unlikely to react with anything in the coolant. 3 Quote Link to comment Share on other sites More sharing options...
jace1969 Posted April 23, 2017 Share Posted April 23, 2017 5 hours ago, Ian Lanc said: If you can get the old cap off without damaging it, then grease it up and re-fit it. If not buy a new cap. Personally I'd just buy a new rad cap, not like it's £50. Well had a check on mine and ford must of done it on last service,nice chap as ok now. And yes been a few posts before on this,if this one didn't pop up again I wouldn't of checked it. Hope you get it sorted MjNewton as it is your post 👍 Quote Link to comment Share on other sites More sharing options...
Ian Lanc Posted April 23, 2017 Share Posted April 23, 2017 6 hours ago, dezwez said: what happens if the grease get in the coolant will it do any harm Won't do any harm, years ago it was quit the norm to put a few drop of oil into the water which mixed with the water then clung to the metal moving parts within the engine. 1 Quote Link to comment Share on other sites More sharing options...
dezwez Posted April 23, 2017 Share Posted April 23, 2017 13 minutes ago, Ian Lanc said: Won't do any harm, years ago it was quit the norm to put a few drop of oil into the water which mixed with the water then clung to the metal moving parts within the engine. you learn something new every day 1 Quote Link to comment Share on other sites More sharing options...
Russ Posted April 25, 2017 Share Posted April 25, 2017 Got my new cap today (genuine Ford) fits perfectly right up until you get to the small 'stop' at the bottom left of the cap as seen in the photo. It was a little tight to get it fully home but trying to turn it back to unloosen I had to wrap a cloth over it to get it started then it came back out easily! 1 Quote Link to comment Share on other sites More sharing options...
MJNewton Posted April 25, 2017 Author Share Posted April 25, 2017 As discussed a smear of silicone grease may help with seating (and removal!). Quote Link to comment Share on other sites More sharing options...
Russ Posted April 25, 2017 Share Posted April 25, 2017 1 minute ago, MJNewton said: As discussed a smear of silicone grease may help with seating (and removal!). Yes I know about the silicon grease.....that isn't the issue! I think the fact the cap is new the 'locking' mechanism of the cap has nice new square corners to it and I think it needs to be rounded slightly or put on and off a few times to bed the mechanism in. Quote Link to comment Share on other sites More sharing options...
MJNewton Posted April 25, 2017 Author Share Posted April 25, 2017 Ah, yes, I see what you mean. As you say a bit of rounding off from repeated usage may make it a bit more compliant. Quote Link to comment Share on other sites More sharing options...
MJNewton Posted May 2, 2017 Author Share Posted May 2, 2017 I've fitted my replacement cap - a Gates RC240 - and whilst it fitted well I would expect that from any cap from new. I smeared on some silicone grease for good measure and will see how it fares over time. Quote Link to comment Share on other sites More sharing options...
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