2002 S60 2.4T has positive crankcase pressure

Post by **horseguytenn** » 14 Aug 2014, 19:50

Have completely replaced the cooling system, completely rebuilt turbo, cleaned turbo coolant lines, replaced crankcase vent hose and oil trap (pcv service by tech), and new thermostat housing gasket, inlet, and thermostat............problem is when I start it and let it idle......and when I place a rubber glove over oil fill hole......it inflates.

Don't really want to run it a lot till I figure it out......any thoughts or suggestions?

Post by **precopster** » 15 Aug 2014, 09:00

Do compression check wet and dry. If numbers markedly increase and oil consumption is high you probably have worn cylinder bores.

Post by **JRL** » 15 Aug 2014, 21:33

Before he does that he should do a COMPLETE breather replacement, he did not. I wonder if he either has a small cracked hose or the hole into the pan is clogged and was not looked at

Post by **precopster** » 16 Aug 2014, 04:01

So he should spend another 5 hours, remove the inlet manifold & chase a possible clogged PCV when he can spend 30 minutes on a decisive compression check first?

Post by **vtl** » 17 Aug 2014, 00:23

precopster wrote:So he should spend another 5 hours, remove the inlet manifold & chase a possible clogged PCV when he can spend 30 minutes on a decisive compression check first?

Then he will spend another 5 hours, because it is indeed PCV. Replacement of oil trap alone gives nothing.

draser · Post by **draser** » 17 Aug 2014, 09:04

The PCV service was done by a tech, and the crankcase breather hose was replaced as well. Unless the tech has done an incomplete job, I'd do a compression test as well. As said, oil consupmtion, mileage and general condition of the engine would be good indicators.

Post by **vtl** » 17 Aug 2014, 09:20

http://www.ipdusa.com/products/4991/115 ... 5-cylinder

PCV kit includes long hairy hose with aluminum tubes and banjo bolts. It costs half of the kit price. It is important to change it too.

Also if the return oil passage is completely clogged, he needs to drop off oil sump and clean it properly.

Post by **precopster** » 17 Aug 2014, 16:15

How many miles are on this car and does it have a regular oil replacement history?

Post by **chrism** » 17 Aug 2014, 18:24

http://www.volvopartswebstore.com/showA ... evel=11150

Part #13 is a problem area on the turbos. It has a tight passage that clogs and the plastic lines are so brittle it's near impossible to clean it out. Volvo dealers sell a "kit" to replace that part.

Post by **horseguytenn** » 20 Aug 2014, 18:26

All good stuff!! Many thanks, it has to be somewhere......just eliminate one thing at a time.

Has 118000 miles, and serviced consistently since we owned (since 05). Am a maintenence freak, lol.