I hope it's not the oil pump...

[fastivaca]

I recently replaced the water pump in my Festiva (B6) and once I had everything back together a regular squeak developed that varied with engine speed and showed up only after the engine was warmed up. I figured that perhaps I had a bad water pump so I disconnected both the alternator belt and the A/C belt and the noise is still there. I then replaced the timing belt and tensioner with no change in the squeak.

The squeak starts once the engine has warmed up a bit and isn't there on initial start up and seems to be coming from the bottom end rather than the top.

Am I correct in assuming it's time to replace the oil pump?

Thanks

[Damkid]

Are you sure the squeak is from that side of the engine? If you are then I personally would change the oil pump rather then risk changing the motor later on

[blkfordsedan]

Don't think I've ever heard an oil pump "squeak". There's no bearings or anything in it...just a couple gears that float in the housing. The fact that it's only after warmup would hint that something is expanding with heat and becoming tight. I could see a new oil pump with clearances too tight causing issues, but years of wear should just cause it to lose some volume.

In any event, it's just speculation on my part. If there's any chance at all it's the oil pump, I would change it. Better safe than sorry!

BTW- Did the sound just start after you replaced the water pump? Did the engine overheat?

[fastivaca]

BTW- Did the sound just start after you replaced the water pump? Did the engine overheat?

The sound started after the water pump was replaced. I've rule out that from being the source when I ran the car with no belts on it so the only thing turning would be the timing belt. The reason I replaced the water pump was because it was leaking badly.

[Rocketman]

Make sure the crank pulley isn't rubbing on the plastic timing belt covers, it's pretty common with the DOHC especially after going in and doing a water pump.

I highly doubt you'll ever hear an oil pump make a squeaking noise, blkfordsedan is right it's two gears that ride in an offset bore around the crank.

[fastivaca]

Make sure the crank pulley isn't rubbing on the plastic timing belt covers, it's pretty common with the DOHC especially after going in and doing a water pump.

Does the SOHC have same issue? I'll check that when I get home later anyways.

Thanks


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[zoom zoom]

There's also the spring/relief valve in there.. I kinda doubt it would squeak tho?

Pick up a mechanics stethascope from harbor freight and see if you can pinpoint the source of the noise! They're only like 4-5$ and make you feel like a real doctor when your using it on your car!



/edit, my sohc b3 had a slight squeeling/rubbing sound from the timing belt cover being warped too..

[blkfordsedan]

The sound started after the water pump was replaced. I've rule out that from being the source when I ran the car with no belts on it so the only thing turning would be the timing belt. The reason I replaced the water pump was because it was leaking badly.

My thought is thus...

It's possible, but unlikely, that the oil pump would just happen to go bad at the same time you replaced the water pump. My guess would be that it is directly related to something you did (or didn't) do when you replaced the water pump.....like a pulley rubbing on a plastic cover, something that didn't get lined up or tightened or some similar situation.

[fastivaca]

I'm going to have a closer look at it tonight and will report on my findings.

Thanks for all the responses.

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[2xclutchin]

Pick up a mechanics stethascope from harbor freight and see if you can pinpoint the source of the noise! They're only like 4-5$ and make you feel like a real doctor when your using it on your car!

A long skinny piece of metal (like a long small diamater bolt) gives the same basic effect when held up to your ear. That's something you might have laying around.

[fastivaca]

Tinkered around with it a bit tonight... Changed the oil and plug wires. Let it warm up til the squeaking started and still couldn't isolate it. Definitely coming from the bottom half towards the front of the engine.

Discovered the the wire for the oil pressure sender was loose so I fixed that too while I was under the car.

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[leapin]

Was the coolant leak bad? Did it soak the timing belt tensioner?

[fastivaca]

Was the coolant leak bad? Did it soak the timing belt tensioner?

I replaced the belt and the tensioner thinking that might be the issue... but it wasn't.

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[festyfreak39]

When stuff like this happens to me, i like to think like this:

1) It cant be the tensioners, they are brand new... did you try spin them with your fingers?Do they make a squeaky noise? Chances are they are new so its not making the noise.

2) The noise is NOT coming from the water pump, or alternator because when the belt was removed, the squeaking was still there. This also rules out the fact that it can be a loose alternator belt.... tons of stuff Canceled out.

3) The oil pump doesn't just magically start sqeaking after you change a water pump, and like previously mentioned, all it is is a couple of gears floating around in oil, so it cant be the oil pump


This means that:

4) Only thing it can be: Timing belt cover is rubbing against the timing belt somewhere. The belt gets warmer, rubbs against the timing belt cover... Take it all appart make sure your using the right gaskets, using the right bolts and the spacer.

[fastivaca]

Finally got around to looking into my sqeaky issue.

I took everything apart again. Determined that I had all the spacers and pulleys installed correctly.

Ran the car with no belts... squeak.
Took off the upper timing cover, ran the car... squeak.
Took the lower pulleys off along with the lower cover. There are no signs of anything rubbing against either of the covers.
Ran the car with no pulleys, covers etc... no squeak!
One thing I noticed is that the timing belt wanted to creep off the crank and cam gears. My best guess at this poont is that the timing belt is really rubbing against the retainer. Can that retainer wear out? Here's a photo of the retainer.



There arw definite wear marks from the timing belt and the wear area is a very dark gray.

Should the retainer be replaced?
Can a timing belt be cleaned?

Almost forgot... discovered that the oil pan bolts at the front were loose and leaking. I'm guessing that thus wasn't helping anyhing.

Thanks again for all your help.

Ian

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