Heater hose leaking coolant
Thread Starter
Joined: Apr 2008
Posts: 2,023
Total Cats: 19
From: Outside Portland Maine
The coolant hose that starts at the firewall and disappears between the engine and the firewall has sprung a leak. And by leak I mean it is wet with coolant, and when I touch it coolant comes pouring out. I can't see what exactly is leaking as it's in that space between the engine and the firewall.
How hard is it going to be to replace that hose? Will I have to pull the engine? I really don't want to be pulling the engine on a car I'm trying to get ready for sale. This is really going to push my schedule back if I do.
Also, I did search, and I was a little surprised I didn't find this out there somewhere.
How hard is it going to be to replace that hose? Will I have to pull the engine? I really don't want to be pulling the engine on a car I'm trying to get ready for sale. This is really going to push my schedule back if I do.
Also, I did search, and I was a little surprised I didn't find this out there somewhere.
Uhh me and someone else made threads about this in the past 2-3 weeks. I do not need the heater core and will be removing these lines. As for how much work it will be... I'll tell you in a few weeks when I remove them
The heater core feed hose just connects at the back of the head. You can probably reach the squeeze clamp thingy by getting under the CAS with some long nose pliers.
Remove coilpacks and bracket if you still can't reach from the top. You can cut the old one off or pry with a screwdriver and lube it up with WD40 and then pull it towards the brake MC.
I got mine off while the engine was in. I pulled it off the engine so I could pull it because removing that hose from the firewall is a pain.
Its tight but you can do it. Bonus if the split is real close to the end of the hose, pull it off, cut the hose and put it back on. Free fix!
Its tight but you can do it. Bonus if the split is real close to the end of the hose, pull it off, cut the hose and put it back on. Free fix!
You may wind up having to order the hose bend rather than just using a length of proper sized hose.
I used a regular hose, and the tight bend causes it to kink. Not a big deal, since I do not need a heater for a while. But if you are selling your car...
I used a regular hose, and the tight bend causes it to kink. Not a big deal, since I do not need a heater for a while. But if you are selling your car...
Sounds like the break is close to the firewall (which happened to me) so you'll have to cut and reinstall. Careful to not damage the heater core inlet/outlet pipe. Mine is a little bent/pitted/scratched and it is almost impossible to seal.
You must cut the old hoses off the heater core fittings. Every single time I've tried to remove them, they leak afterwards. Once they leak, you need to pound a 7/16" or an 11mm socket through them to round them out, and then use worm clamps to seal them up completely, or else they will leak forever.
You must cut the old hoses off the heater core fittings. Every single time I've tried to remove them, they leak afterwards. Once they leak, you need to pound a 7/16" or an 11mm socket through them to round them out, and then use worm clamps to seal them up completely, or else they will leak forever.
Lol I had leaks too. I covered the fittings in black RTV and shoved the hoses on 
Been leak free for 2+ years but I know that something clever is going to have to happen when I need to replace those hoses.

Been leak free for 2+ years but I know that something clever is going to have to happen when I need to replace those hoses.
Thread
Thread Starter
Forum
Replies
Last Post
stoves
Suspension, Brakes, Drivetrain
5
Apr 21, 2016 03:00 PM






