TBKBABABTIM Posted June 2, 2013 Share Posted June 2, 2013 Filling the cooling system on supersport140 this morning but have only got about 4 litres In before level in expansion tank stopped going down. Anyone got any suggestions? Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted June 2, 2013 Member Share Posted June 2, 2013 Have you read the advice in the archives about jacking and masssaging? Jonathan Edited by - Jonathan Kay on 2 Jun 2013 09:41:40 Link to comment Share on other sites More sharing options...
TBKBABABTIM Posted June 2, 2013 Author Share Posted June 2, 2013 All the results I came up with refered to K series rather than Sigma. Link to comment Share on other sites More sharing options...
John Vine Posted June 2, 2013 Share Posted June 2, 2013 I'm not familiar with the Sigma, but it does sound as though you have air in there somewhere. Assuming you have a heater, have you opened the heater valve, and have you tried detaching the top heater hose and back-filling the heater? JV Link to comment Share on other sites More sharing options...
TBKBABABTIM Posted June 2, 2013 Author Share Posted June 2, 2013 Thanks I have back filled the heater inlet pipe, the bottom one, I've massaged some of the pipes which just resulted in more coolant going into the expansion tank which is now very full. Wondering if I should release the nut on the top of the radiator to see if that helps. Link to comment Share on other sites More sharing options...
John Vine Posted June 2, 2013 Share Posted June 2, 2013 Wondering if I should release the nut on the top of the radiator to see if that helps.Good idea (at least, that's what I do on Ks and Duratecs). You'll likely get a lot of air out and the level in the expansion bottle will drop markedly. JV Link to comment Share on other sites More sharing options...
TBKBABABTIM Posted June 2, 2013 Author Share Posted June 2, 2013 Took the nut off the rad but the level still didnt drop but have managed to get 5 litres in now but directly filling the radiator as well but reckon still some air in there. Link to comment Share on other sites More sharing options...
michaeljclark Posted June 2, 2013 Share Posted June 2, 2013 When CCS replaced the Std (one that everyone hates) Rad with R400 Ali one on my Sigma based 7, their method was to: * open the heater (as previosuly mentioned) * unscrew the bolt in the top of the new Rad (as it doesn't have the bleed valve) to allow air to escape back to the expansion tank. * Fill Now the unconvential bit was: When they thought they'd got pretty much all the coolant in, to ensure there was no air in the rad, they cleaned the screw threads around the top of the expansion tank, and then one fo them put their mouth over the top and blew whilst the other one waited for the coolant to jet out the top of the rad - as soon as it did he put the bolt back in. They then ran the engine and topped the coolant up once the air came out into the expansion tank. They must have filled and bled the system in about 5 mins and then ran it up to temp to ensure the fan cut in and out. Cheers Mike Link to comment Share on other sites More sharing options...
TBKBABABTIM Posted June 2, 2013 Author Share Posted June 2, 2013 Thanks, wonder if SHWBO fancies that while I stand ready with the bolt for the radiator. Link to comment Share on other sites More sharing options...
paul jacobs Posted June 2, 2013 Share Posted June 2, 2013 It sometimes helps to jack the front of the car up, so that the radiator bleed bolt is the highest point and all being well air will find it and get rid of any air locks, you can do this whilst running the engine up to temperature, at least I have done. Link to comment Share on other sites More sharing options...
pugwash Posted June 2, 2013 Share Posted June 2, 2013 I think you are on the right lines. I just filled my sigma 140 as per the first start instructions including the back fill of the heater. Bit disappointed when all 5 liters in the CC supplied first fill fluid pack disappeared down into the pipes and left an empty header tank. Apparently with a heater it takes about 5.5 l! I had no issues with airlocks. So if you have got a bit over 5 liters and back filled the heater should be ok. When you start up, the bleed tube from the back of the engine to the header tank will just continuously top up the tank. This is different to earlier sigmas where this tube went to the rad. You can top up the levels after the first start if it is a bit low. Link to comment Share on other sites More sharing options...
TBKBABABTIM Posted June 2, 2013 Author Share Posted June 2, 2013 Hopefully first start next weekend but will need to buy some more as used the whole 5 litres already. Link to comment Share on other sites More sharing options...
sparky Posted June 2, 2013 Share Posted June 2, 2013 You don't need to use 100% coolant. It's safe with our climate to use 50/50 with water. Link to comment Share on other sites More sharing options...
Martin J Posted June 2, 2013 Share Posted June 2, 2013 I have filled my sigma's cooling system three times from empty (initial build, replacement rad & antifreeze replacement at 4yrs) Each time I found running the engine cleared the air lock. There was a satisfying burp & then I was able to get the full volume of antifreeze in. What are you using for the first oil fill. I used a 15/30 mineral oil to help things bed in & changed to fully synthetic at 1000 miles but I service the car myself. Link to comment Share on other sites More sharing options...
Martin J Posted June 2, 2013 Share Posted June 2, 2013 Quoting sparky**: You don't need to use 100% coolant. It's safe with our climate to use 50/50 with water. Comma extream red is available as a premix so you just tip it in neat. Link to comment Share on other sites More sharing options...
sparky Posted June 2, 2013 Share Posted June 2, 2013 I was assuming it wasn't premix. That said I'm sure adding water to the premix solution will be ok to complete the full. Don't quote me on that though as I've never used premix. Edited by - sparky** on 2 Jun 2013 21:15:52 Link to comment Share on other sites More sharing options...
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