zambesi0 Posted April 13, 2021 Share Posted April 13, 2021 hi all having had to drain coolant system ,i have now refilled with vacumn kit.started car watching temp on dash temp rises to 99c rear fans kicked in temp continues to 112c front fans start temp continues to rise at 118c fans really start motoring radiators and pipes at front still cold got to 120c i then turned engine off as getting concerned, Any help and advice would be much appreciated Link to comment Share on other sites More sharing options...
barryb Posted April 13, 2021 Share Posted April 13, 2021 Hi How much coolant went back in? Should be around 22-23 litres. Barry Link to comment Share on other sites More sharing options...
zambesi0 Posted April 13, 2021 Author Share Posted April 13, 2021 Only about 18 litres mick Link to comment Share on other sites More sharing options...
barryb Posted April 13, 2021 Share Posted April 13, 2021 Hi Looks like an air lock, try vacuum again I suggest. I had the same recently when I changed the front pipes. I assume everything was OK beforehand. Barry Link to comment Share on other sites More sharing options...
zambesi0 Posted April 14, 2021 Author Share Posted April 14, 2021 hi thanks. do i need to drain system and start all over again? mick Link to comment Share on other sites More sharing options...
barryb Posted April 14, 2021 Share Posted April 14, 2021 Hi I don't think you need to drain and start again. You need to pull a fair old vacuum in the system to get to the air in the front. Pull the vacuum from the expansion chamber in the engine compartment sealing off the two pipes going to overflow and top up in the boot. Leave the vacuum for a few minutes and make sure it stays then let in the other 4 or 5 litres. Best of luck. Keep an eye on the level for a few kilometres afterwards and top up as necessary. Barry Link to comment Share on other sites More sharing options...
zambesi0 Posted April 14, 2021 Author Share Posted April 14, 2021 Ok thanks very much for your help,much appreciated mick Link to comment Share on other sites More sharing options...
zambesi0 Posted April 17, 2021 Author Share Posted April 17, 2021 sadly am now pulling my hair out. left hand radiator gets hot however right rad and centre rad remain cold temp reaches 117c front fans blowing full bore seem to keep it there . anybody know where i can get a layout of the cooling system pipe work as local porsche people are not very helpful (not responding to my requests for help) mick Link to comment Share on other sites More sharing options...
zambesi0 Posted April 19, 2021 Author Share Posted April 19, 2021 Hi have finally got cooling system working,ended up lifting valve near header tank running engine at 1500 rpm for 20 minutes system now working Link to comment Share on other sites More sharing options...
barryb Posted April 20, 2021 Share Posted April 20, 2021 Hi Excellent what a relief😀 it must have been an air lock. Refilling coolant system is a right pain. Keep checking level for a couple of weeks to be sure. Barry Link to comment Share on other sites More sharing options...
zambesi0 Posted April 21, 2021 Author Share Posted April 21, 2021 yes finally.thanks again for your input. Mick Link to comment Share on other sites More sharing options...
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