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Old 05-07-2008, 12:33 PM   #1
ursmother
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Default Replacing timing belt, need to do pump too?

Does everyone typically replace the water pump when they are doing the timing belt? The dealer said they don't usually do the pump, since they have very little problems with them.
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Old 05-07-2008, 12:56 PM   #2
blackfang
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No you do not need to change the w/p unless it is leaking. These are not Honda's and Toyota's. The Subaru w/p rarely go bad. However, if you want a piece of mind, then go ahead and change it. Of all the Subaru's we see, maybe 2 or 3 had leaking pumps.
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Old 05-09-2008, 01:34 PM   #3
BGPKR
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Would it be safe to assume that oil pump replacement is recommended when replacing the timing belt?
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Old 05-09-2008, 02:11 PM   #4
blackfang
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Quote:
Originally Posted by BGPKR View Post
Would it be safe to assume that oil pump replacement is recommended when replacing the timing belt?
Not unless it is leaking or have failed.
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Old 05-09-2008, 05:30 PM   #5
flstffxe
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Quote:
Originally Posted by BGPKR View Post
Would it be safe to assume that oil pump replacement is recommended when replacing the timing belt?
No need to replace it but it is a good idea to re-seal it. Along with doing the crank seal, cam seals. If it were me, I would reseal the water pump while you are there. Less work now to prevent it from happening down the road, then it would be to do it "if" it leaks down the road.
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Old 05-10-2008, 12:35 PM   #6
sidewayz
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Quote:
Originally Posted by blackfang View Post
No you do not need to change the w/p unless it is leaking. These are not Honda's and Toyota's. The Subaru w/p rarely go bad. However, if you want a piece of mind, then go ahead and change it. Of all the Subaru's we see, maybe 2 or 3 had leaking pumps.
they don't go bad huh?

hehe, I've seen a lot of them go. Mostly do to improper coolant changes and corroded pump wheels which ate away at them. Yes they don't leak, but they can and will fail.

No need to mess with the oil pump UNLESS its already leaking. Other than that leave it be.


to the op.

replace it. you are in there and what really is another $65 at that point??
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Old 05-10-2008, 06:55 PM   #7
RoadTrippin
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Just changed my timing belt, replaced the WP and OP as well b/c both were leaking...oh well, personally considering WP's arent too costly and you will be working in the area anyways I would just do it, save yourself the hassle later.
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Old 05-11-2008, 01:30 AM   #8
Engmus
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When I do mine, I'll be doing the oil and water pump.

Stricly because with my luck, I'll bottle it up, drive 5k and one or the other will go out.

Of course...with my luck i'll replace them with new and get a dud new out of the box...haha.

Screwed either way!
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Old 05-11-2008, 09:03 PM   #9
blackfang
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Quote:
Originally Posted by sidewayz View Post
they don't go bad huh?

hehe, I've seen a lot of them go. Mostly do to improper coolant changes and corroded pump wheels which ate away at them. Yes they don't leak, but they can and will fail.

No need to mess with the oil pump UNLESS its already leaking. Other than that leave it be.


to the op.

replace it. you are in there and what really is another $65 at that point??
I never said they do not go bad. I said they rarely go bad. There is a difference.

These are not Toyota's or Honda's which are pretty much guaranteed to be leaking or weeping by 90k. When I worked for Toyota about 75% or more w/p's were bad by 90k.

In the past 18+ months, we have had 1 water pump fail on a Subaru. I see some 150-200k Subaru's daily as well. I think that is all the proof I need to make a professional opinion on them.
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Old 05-11-2008, 09:45 PM   #10
dwmoss_68
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i chose not to change the water pump during my timing belt change...

at 163k now, but I will change it at the 210k timing belt change!!

dm
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Old 05-11-2008, 11:47 PM   #11
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There is no reason NOT to do the water pump at the same time as the timing belt, along with your cam and crank seals. Those seals are prone to leaking, and the water pump is just added insurance that you won't have to redo any of this work before a new belt is needed.
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Old 05-12-2008, 10:03 AM   #12
blackfang
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Quote:
Originally Posted by ringe View Post
There is no reason NOT to do the water pump at the same time as the timing belt, along with your cam and crank seals. Those seals are prone to leaking, and the water pump is just added insurance that you won't have to redo any of this work before a new belt is needed.
Yes it is a piece of mind, but you do not have to replace them if they are not leaking or failed. Some people make it out to be a requirement, but it isn't. If you want the piece of mind and have the extra coin, then that is fine.
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