overheating after cambelt replaced

[piratefm]

hi, i have a 250t, its the 2.5ltr 4 cam model, i just replaced the cam belt,
it seems now the water is not circulating and the temp wonders every which
way, where is the waterpump on these things, i cant see it hung on a belt, is
it
electric or belt drive?????, any help appreciated, andy

 

[Todd H.]

hi, i have a 250t, its the 2.5ltr 4 cam model, i just replaced the cam belt,
it seems now the water is not circulating and the temp wonders every which
way, where is the waterpump on these things, i cant see it hung on a belt, is
it
electric or belt drive?????, any help appreciated, andy

Is it possible a radiator service was done at the same time?
Subarus are notoriously tricky to "burp" when the coolant is changed
and you may have air in your system. You'll want to take it back
ASAP to be corrected lest you damage the head gasket or other parts of
the engine.

This isn't directly related to your timing belt replacement, I don't
think, but it's not unusual to have the cooling system service done at
a time similar to the timing belt.

 

[piratefm]

Is it possible a radiator service was done at the same time?
Subarus are notoriously tricky to "burp" when the coolant is changed
and you may have air in your system. You'll want to take it back
ASAP to be corrected lest you damage the head gasket or other parts of
the engine.

This isn't directly related to your timing belt replacement, I don't
think, but it's not unusual to have the cooling system service done at
a time similar to the timing belt.

yo, yes it seems like air in the water, burps describe it well, sadly i did
the belt myself and replaced the tensioner at the same time.
Do you have a method of burping these radiators?
cheers andy

 

[Todd H.]

yo, yes it seems like air in the water, burps describe it well, sadly i did
the belt myself and replaced the tensioner at the same time.

Do you have a method of burping these radiators?

I believe Subaru issued a TSB or something on the correct burping
procedure to eliminate air from the cooling system. I think it
involves slowly filling the radiator with the car on an uphill incline
or jacked? My mechanic had access to it through his data subscription
service, but I'm sure there's a way a DIY-er can get at that. Someone
else might post details?

 

[John]

I believe Subaru issued a TSB or something on the correct burping
procedure to eliminate air from the cooling system. I think it
involves slowly filling the radiator with the car on an uphill incline
or jacked? My mechanic had access to it through his data subscription
service, but I'm sure there's a way a DIY-er can get at that. Someone
else might post details?

It's been a few years since I replaced the timing belt on my 1990 Legacy...
I had to do the job twice, because I didn't know about the burping problem
at first. I drove the car after the first replacement and a few miles later
it promptly overheated. I was somehow able to make it back to where I
replaced it. Not knowing about the burping problem, I assumed I might have
missed something (or had a faulty thermostat) a did the job *again*...
everything looked alright. The second time, I did take a very cautious
approach to refilling the radiator. I pushed the front of the car up and
down while refilling the coolant. This seemed to work as I had no further
problems. If I remember correctly, there is a vent valve on the top left
hand side of the radiator (on the other side from the refill)... this valve
must be opened as it allows air to leave the system more effectively.
John
Athens, GA