S40 V40: - URGENT! Oil leak, knocking top end and low idle - Page 2

2000S40 · Apr 25th, 2010, 23:49

Baffler, the only bungs/bolts/other parts that would keep the oil in were very tightly in place. My view is limited from both above and below since I'm crawling into tight spaces, but I definitely saw no holes for oil to leak out.

There's a pipe coming from behind the plastic cambelt cover, at the back, near the exhaust heatshield. That was a little wet, though nothing like around the passenger driveshaft - this had the only fresh oil (not black, but the goldish colour you get directly from the bottle) on the entire soaked underbody of the car. Does that help?

Baffler · Apr 26th, 2010, 00:06

Stevo could very well be on the money with the rear crankshaft oil seal. This is the seal behind the flywheel so that means the gearbox has to come out, flywheel off and new bolts needed for reassembly. The assembly plate of the clutch could be impregnated with oil so it would be advisable to fit a new clutch kit too.

2000S40 · Apr 26th, 2010, 00:09

Would that definitely show oil all around the pas/ driveshaft?!
That sounds like an epically expensive job. And not something that can be done in a day.

The clutch being oiled up, would that cause such issues as a shudder in first?!
If so then it could be the full sha-bang, and I'm royally rumbled

Ugh, my stomach just dropped..

Baffler · Apr 26th, 2010, 00:48

No, I'm afraid it's not looking good is it...

Quote:

Would that definitely show oil all around the pas/ driveshaft?!

If the rear crank seal is gone then oil will collect at the bottom of the bellhousing and seep out as there is no gasket between the gearbox and engine, the oil will then blow back along the bottom of the car, as you have seen. The seal itself is molded half way (half moon) into the sump and this reflects the loss of almost two liters. The quick drip of oil would also indicate this to be your problem.

Quote:

The clutch being oiled up, would that cause such issues as a shudder in first?!

The shudder could be the wet clutch slipping and catching

2000S40 · Apr 26th, 2010, 17:51

I took it to a Volvo dealer today.
The oil coming out is NOT engine oil, but gearbox oil apparently.

The car engine was cleaned, test driven and the only oil coming from anywhere is the driveshaft -> gearbox. On the other side, there's a bit of seepage from the grease in the CV joint.

The engine oil went from half full to just under the dipstick reach over a space of about 1,800 miles where I drove Holland > Oxford > Holland > Belgium > Holland. Apparently in my engine's age (1997) and mileage (223,700 miles) this is quite possibly due to the engine using the oil especially due to old seals internally, it needs a stripdown and replace to lessen the oil use.

The tapping has gone from the top end, and I will now check the oil level every day after my travels (it's a daily driver).

However, now I definitely need a new gearbox, it's leaking in more than one place, whiney, a little difficult to get into gear (even with new bushes) and if you remember, it had a lot of brass shavings inside the 5th carter. So much for a "rebuilt" box eh?

The oil all along the under side of the car is all gearbox Volvo said, and it's happened over an extended period of time (I fill the gearbox 1-2times a month). So that's a relief.

They said the engine was as dry as a bone, there wasn't a leak anywhere apparently.
It's definitely leaking where the driveshaft goes into the gearbox, and no higher.

So it's new gearbox once I get back to full-time work, and I have to keep monitoring the engine oil. I got some Wynn's stop-leak which is supposed to "revive" rubber seals in the engine, lessening oil use. It does not thicken the oil, it's a chemical that reacts with rubber only. I'm going to try that also, and see if I notice any changes.

Thanks for the help.
Jason

neileg · Apr 27th, 2010, 07:07

Pleased I was wrong. Don't bother with any additives in your engine oil. They won't stop the oil consumption related to wear, just keep an eye on the oil level. Many engines would have died before reaching the mileage yours has.

Gearbox oil should need topping up on an annual basis not twice a month. You know then that yours has a serious issue.

Apr 26th, 2010, 00:06	#12
Baffler Premier Member Last Online: Yesterday 21:18 Join Date: Dec 2002 Location: Co. Limerick, Ireland	Stevo could very well be on the money with the rear crankshaft oil seal. This is the seal behind the flywheel so that means the gearbox has to come out, flywheel off and new bolts needed for reassembly. The assembly plate of the clutch could be impregnated with oil so it would be advisable to fit a new clutch kit too. __________________ Liam... '96 854 TDI SE, '99 V70 2.5D S, '05 C70 2.0T Collection, '05 S80 2.0T SE, '15 V70 D4 SE Lux Nav.

Apr 25th, 2010, 23:49	#11
2000S40 Volvo for life Last Online: Sep 18th, 2011 00:35 Join Date: Jan 2010 Location: Newport	Baffler, the only bungs/bolts/other parts that would keep the oil in were very tightly in place. My view is limited from both above and below since I'm crawling into tight spaces, but I definitely saw no holes for oil to leak out. There's a pipe coming from behind the plastic cambelt cover, at the back, near the exhaust heatshield. That was a little wet, though nothing like around the passenger driveshaft - this had the only fresh oil (not black, but the goldish colour you get directly from the bottle) on the entire soaked underbody of the car. Does that help?

Apr 26th, 2010, 00:09	#13
2000S40 Volvo for life Last Online: Sep 18th, 2011 00:35 Join Date: Jan 2010 Location: Newport	Would that definitely show oil all around the pas/ driveshaft?! That sounds like an epically expensive job. And not something that can be done in a day. The clutch being oiled up, would that cause such issues as a shudder in first?! If so then it could be the full sha-bang, and I'm royally rumbled Ugh, my stomach just dropped..

Apr 26th, 2010, 17:51	#15
2000S40 Volvo for life Last Online: Sep 18th, 2011 00:35 Join Date: Jan 2010 Location: Newport	I took it to a Volvo dealer today. The oil coming out is NOT engine oil, but gearbox oil apparently. The car engine was cleaned, test driven and the only oil coming from anywhere is the driveshaft -> gearbox. On the other side, there's a bit of seepage from the grease in the CV joint. The engine oil went from half full to just under the dipstick reach over a space of about 1,800 miles where I drove Holland > Oxford > Holland > Belgium > Holland. Apparently in my engine's age (1997) and mileage (223,700 miles) this is quite possibly due to the engine using the oil especially due to old seals internally, it needs a stripdown and replace to lessen the oil use. The tapping has gone from the top end, and I will now check the oil level every day after my travels (it's a daily driver). However, now I definitely need a new gearbox, it's leaking in more than one place, whiney, a little difficult to get into gear (even with new bushes) and if you remember, it had a lot of brass shavings inside the 5th carter. So much for a "rebuilt" box eh? The oil all along the under side of the car is all gearbox Volvo said, and it's happened over an extended period of time (I fill the gearbox 1-2times a month). So that's a relief. They said the engine was as dry as a bone, there wasn't a leak anywhere apparently. It's definitely leaking where the driveshaft goes into the gearbox, and no higher. So it's new gearbox once I get back to full-time work, and I have to keep monitoring the engine oil. I got some Wynn's stop-leak which is supposed to "revive" rubber seals in the engine, lessening oil use. It does not thicken the oil, it's a chemical that reacts with rubber only. I'm going to try that also, and see if I notice any changes. Thanks for the help. Jason

Apr 27th, 2010, 07:07	#16
neileg Junior Member Last Online: Jun 21st, 2010 22:45 Join Date: Sep 2009 Location: Blyth	Pleased I was wrong. Don't bother with any additives in your engine oil. They won't stop the oil consumption related to wear, just keep an eye on the oil level. Many engines would have died before reaching the mileage yours has. Gearbox oil should need topping up on an annual basis not twice a month. You know then that yours has a serious issue.

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