Hi
I've been working on replacing the PCV system, corrosion on a 17 year old 850 is slowing me down
I have the manifold loose, but there is a steel pipe, drivers side, that is attached, under the manifold. None of the posts mention this. I assume this must be disconnected? Looks rusted tight.
Any experience whith this?
Thanks for any suggestions
Pete

 

l helped my friend replace his pcv two days ago. there are two bolts that needs to be removed.one bolts the oil dipstick to the manifold and the other bolts the manifold to the engine block.which one are you referring to? the one that bolts the manifold to the engine block was really tight,had to use w40 and let it sit for like 10minutes. came off easily after doing that.

 

The reason WD40 is called WD40 is because it's best trait is water displacement. Water displacement = WD. It's wonderful to spray on ignition wires or your coil or cap and rotor but it is NOT, NOT a penetrating oil. It may help but so would everyday engine oil. WD40 is no where as good as liquid wrench or PB Blaster. These fluids are designed to give you everything you can get out of a penetrating fluid. And as you know sometimes even that isn't enough.

Keep WD40 for cleaning your tools after the jobs done.

The tube you are talking about might be for an EGR. EGR valves are not on all the models so depending on year and emissions package it could be the tube you're asking about and they do get really rusty.

 

WD40 worked fine for my friend because he did not have the PB blaster on hand. l used PB blaster myself a couple of time and it is better than WD40. Get the PB blaster and you should be good to unbolt it.

 

Thanks for your reply
I have the manifold unbolted from the 2 bolts below
Did your friend's car have a metal pipe on the drivers side?
The forum write ups must be on slightly newer 850's, they don't seem to have this pipe

 

Attached is a photo of the pipe, it is the gold looking pipe,middle of the photo

 

Yuk, I really hate northern cars.

Yes that is the EGR valve. Not sure what size the bolt is but maybe 21mm. You do have to take the time to work it off. May take about 15 minutes and it is on tight. No problem coming off and it is likly not rusted on, just tight.

 

rspi:
Thank you for the confirmation
I'll take a crack at it tonight...

 

no my friends car did not have that kind of metal. he drives an s70 and its similar to the 850.

 

98 s70 has little to no room to work on compared to the 850
@RSPI have you noticed the difference? working on my friends car was a little hard because of lack of room.

 

you might want to use a bigger torque wrench if it will fit in that area.something like this
Mechanics M200DB 1/2" Dr Click Torque Wrench on eBay!