Flame Trap
 

Greetings..

I have a 97 850 wagon. How often should the flame trap be cleaned or replaced. I change my own oil on occasion.
5 Cyl. non-turbo 170,000 miles.

Thanks.

RE: Flame Trap
 

The quote from your service book is:

60,000 MILES:
PCV - REPLACE FLAME GUARD: CLEAN NIPPLE AND HOSES (also at 100,000 miles for '95 - '97 models)-
* Maintains proper emission control.
* Clogged flame guard may cause oil seepage.

There is a whole library of documents waiting for you at:

http://www.volvocars.us/_Tier2/Owners/Library.htm

RE: Flame Trap
 

At the dealer we do it as part of the 30k service.I would reccomend doing it every 30k I have seen then clog at 40k.

RE: Flame Trap
 

This is my first time working on a Volvo engine, and I hate to screw anything up, or take anything apart unneccessarily. With this in mind, can anyone tell me exactly where the flame trap/pvc valve is... exactly, and also what is the process of taking it off... exactly? Thank you.

RE: Flame Trap
 

I forget if you have a turbo or not.The turbo has no flame shield or anything servicable.The non turbo has it in the induction hose close to the throttle body.There is a plastic housing with 2 vaccum lines going to it.Turn and lift out of the hose and there is a plastic sheild inside there that is the flame sheild.

RE: Flame Trap
 

Okay, first of all, and this may sound like a dumb question, but where is the throttle body? And, second, what about the pvc valve? Is this one-in-the-same?

RE: Flame Trap
 

Volvo's dont have PCV valve they have flame sheilds. The throttle body is on the end of the intake on the left side of the car.If it is non turbo follow the hose from the air filter box the the engine.

Remember the turbo engine is not servicable

RE: Flame Trap
 

Yes, I do not have a turbo, I have GLT. And, thanks for the info. Should I clean it with carburator cleaner... OS safe?

RE: Flame Trap
 

Take a good look at it if you can still see through it just clean it good with carb cleaner.If it is clogged replace it.

RE: Flame Trap
 

Thanks loads!!!!!!!!!!!!!

RE: Flame Trap
 

Your welcome.

RE: Flame Trap
 

Is this the flame trap, or is it at the other end of this very loooong hose under the engine? By the way, the last picture is of the air intake where the thing plugs into... what I think is the flame trap?

[IMG]local://upfiles/1748/2B8379220C514207BCF207FB5CF5EFDC.jpg[/IMG]

[IMG]local://upfiles/1748/118B5FD764AA42B89DF3F76A1A4FE8FC.jpg[/IMG]

[IMG]local://upfiles/1748/FAD97BFDAFED46B5BF46FDFC4FE41305.jpg[/IMG]

RE: Flame Trap
 

About the previous message, notice the oil all around the area. I seem to be having a very small oil leak, and the oil is comming from this area. Any clues?

RE: Flame Trap
 

The first 2 pics are the flame trap setup.Was there a white insert in there with a bunch of holes?
Install a new o-ring whe you put it all back together.
The vent box may be clogged and pushing oil up to the flame trap.
Or the rear cam seal could be bad weaping oil onto the flame trap.

RE: Flame Trap
 

No, there wasn't any pieces inside, or when it just came out, some of the pieces just fell out. The flame trap looked like part of it was melted away, and that was one reason why it wasn't holding on. Another thing is, how do I clean the vent box? Also, would you recommend that I try and get a new rubber hose... you know the hose that goes from the flame trap to somewhere deeeeep behind the engine!!!!

RE: Flame Trap
 

Actually, which one is easier to check, the seals, or he box? And, where are they, and how do I check them/change them?

RE: Flame Trap
 

Actually, how can I truely tell what is the problem?

RE: Flame Trap
 

Could all of those internal parts of the flame trap have done any damage to the engine? I mean, you can't see it, but there is nothing but a thru hole in the flame trap, the flame trap looks like half of it is gone, like maybe it was broken off, and there is nothing inside of it. Also, when I took it apart, very few parts, if any fell out. Is this okay?

RE: Flame Trap
 

The rear cam seals are under the dist cap and the cam sensor.
The vent box on located in the front of the engine on the side be the A/C compressor.There is a black box attached to the engine.That is the vent box.To be safe I would just replace it and the seals.
If the hose looks really bad and brittle I would replace it.
If any of the peices go sucked into the engine they would have been chewed up.Since it is only plastic it should not have caused any damage.

One way to check for the leak would be to clean the engine and the hoses in the area good with brake clean or something like that.I would not use water to clean it.Once it is really clean drive it for a little while and recheck it and see where the oil is.

RE: Flame Trap
 

Just curious. If you look at my pictures, and you see all the oil in the throttle body, and underneath the flame trap area, could that be because the flame trap was broken, or does it still mean that there is definately another problem with the vent box, or the rear seals? Also, if it is the rear seals, would it be just as easy to change the front seals at the same time? Thanks for the input, and sorry about all of the questions, I have a Haynes book, and it is one of the worst car books that I have seen, so I need to ask many questions about locations, and what parts look like. Hope you don't mind. And, thanks again everyone, Mr. Tech especially.