98sc00byGT Posted January 17, 2011 Share Posted January 17, 2011 Replaced thermostat with a genuine subaru one and now i have no heat and neither radiator hose is hot and has a brand new waterpump also. The radiator is very slow to fill also. I have no idea what the problem is and I need help asap because i need my car for work Link to comment Share on other sites More sharing options...
johnegg Posted January 17, 2011 Share Posted January 17, 2011 you have an air lock, you need to fill and burp the system correctly. slowly fill the system with the vent plug removed. install the vent plug,start the and run the car with the radiator cap off. once it has reached full operating temp, top off coolant and put on cap. did the car overheat?? Link to comment Share on other sites More sharing options...
subikid90 Posted January 17, 2011 Share Posted January 17, 2011 ^this. If you can elevate the front of the car it is even better. -Subikid90 1997 Legacy GT 5spd & EJ251 w/EJ25D heads ~10.5CR 1998 Legacy GT Limited waiting for EJ22T hybrid swap Link to comment Share on other sites More sharing options...
vicarious1349 Posted January 17, 2011 Share Posted January 17, 2011 also sometimes you have to repeat the procedure a few times. I think I did it 2 or 3 times on my car before it finally had filled up all the way. Link to comment Share on other sites More sharing options...
Toallhisdoom Posted December 6, 2011 Share Posted December 6, 2011 Wth is the vent plug? Link to comment Share on other sites More sharing options...
Kennyfvholla Posted December 6, 2011 Share Posted December 6, 2011 The vent plug is a small plastic bolt type things that screws into the top of the passenger side of the radiator. It's square in shape and has slots for a phillips screw driver. You remove it to allow air to escape the radiator as you fill it with coolant. It makes the whole process easier and quicker. Link to comment Share on other sites More sharing options...
I Donated broknindarkagain Posted December 6, 2011 I Donated Share Posted December 6, 2011 Wth is the vent plug? Its a plug that vents! -broknindarkagain My Current Project - Click Here COME AND TAKE IT "The only thing necessary for the triumph of evil is for good men to do nothing." Link to comment Share on other sites More sharing options...
Toallhisdoom Posted December 6, 2011 Share Posted December 6, 2011 Yea I found it. Still can't get this thing to burp. Link to comment Share on other sites More sharing options...
nick.cfrancis Posted December 6, 2011 Share Posted December 6, 2011 Follow the procedure in the owners manual. Remove the vent plug and pour VERY slowly. http://www.filedropper.com/fillingcoolantprocedure Link to comment Share on other sites More sharing options...
johnegg Posted December 6, 2011 Share Posted December 6, 2011 the last 2 times i have filled an empty cooling system on an ej25 engine, i have used a very unusual method and have had NO problems and have not had to burp. i put the gallon of coolant on top of the engine, either the passenger strut tower or the air box near the firewall. i then use a small diameter tube (~5/16 inch, inside diameter) to siphon the coolant out of the jug and into the rad. (it helps if the tube is clear so you can see the coolant as it gets close to your mouth.) after the jug is empty, i then start over with a half jug (2 qts.). this is a very slow process because of the size of the hose, but more so due to the very small difference in height. the system fills very slowly and has time to back fill the engine thru the top rad hose. i make sure the rad cap is at least level with or usually higher than the rest of the rad. having the vent cap open helps too. the first time i did it i tried to burp it but i ended up wit h less coolant in the system than when the siphon had finished. so this last time i just let the siphon do its thing and then put the cap on. no problems. it works great, but it is really, really, slow. so i do it while i'm finishing up the last little bits of whatever i'm working on. this is so slow that if you did it and then watched it you would give up and start pouring long before it got done. but it is a great time to open a beer and admire your work. i doubt this is a good technique for a car that needs to be burped, but it works great for filling empty systems. hth Link to comment Share on other sites More sharing options...
Stasis Posted December 6, 2011 Share Posted December 6, 2011 Yeah was thinking about doing it that way next time I do it. I suppose to get all of the old coolant out it is also best to remove thermostat after draining as much as you can through the rad bung? Link to comment Share on other sites More sharing options...
johnegg Posted December 6, 2011 Share Posted December 6, 2011 i don't mess with the rad drain plug, i just remove the lower hose. Link to comment Share on other sites More sharing options...
Stasis Posted December 6, 2011 Share Posted December 6, 2011 Well then. Sounds far easier then destroying my hand again with the plug lol Thermostat too? Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.