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96 850 non turbo/ oil under the top cover

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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rogreact
Posts: 42
Joined: 4 September 2008
Year and Model: 96 850 glt n/a
Location: churchville va

96 850 non turbo/ oil under the top cover

Post by rogreact »

I take the top cover off to expose the plugs and there is a lot of oil there. Where could that be coming from?

Azik09
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Post by Azik09 »

You need to replace O-rings in the spark plug wells. It needs to remove the camshafts cover. If you have no experience, you better to entrust this work to mechanic.
If my English is bad, please correct me :oops:

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FLXC90
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Post by FLXC90 »

is the oil in the spark plug wells, or is it in the recesses along the cover? If it is primarily in the plug wells, see the above response, but if it is in all the recesses of the cam cover, especially between #2 and #3 cylinders, it is most likely from a bad oil cap seal, or the PCV hose. Either one indicates the need for PCV servicing that you will find in other threads here. When the PCV blocks up, pressure builds inside the engine, forcing oil/vapor through the weakest seals, how is the inside of the distributor behind the oil guard?
Current Volvos:
1998 V70 T5, 112k sat 5 years, still in mechanical coma (finally at the top of the pile )
2004 XC90 T6 AWD: 186k, 60 on transaxle ( traded in )
1998 POS70 N/A: DD/training aid, 236k but really about 240k, I think...ABS module( passed on to son who sold it)

kahl
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Post by kahl »

I think FLXC90 pretty much hit the nail on the head with oil cap seal and PCV needing service. If you search PCV system you will come across posts on how to evaluate your PCV system and also how to do the service. Member RSPI has several excellent videos on this issue.

rogreact
Posts: 42
Joined: 4 September 2008
Year and Model: 96 850 glt n/a
Location: churchville va

Post by rogreact »

can someone direct me to an article on how to replace flame trap. I have no idea how to do it. For 15 bucks I could do this myself and see if I solve anything

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FLXC90
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Post by FLXC90 »

go to the repair database and search the pcv maint. It will run you through all of it. You'll save the $15 by disposing of the flame-trap, but there is a little more to it than just that. Did mine recently, big difference.
Current Volvos:
1998 V70 T5, 112k sat 5 years, still in mechanical coma (finally at the top of the pile )
2004 XC90 T6 AWD: 186k, 60 on transaxle ( traded in )
1998 POS70 N/A: DD/training aid, 236k but really about 240k, I think...ABS module( passed on to son who sold it)

rogreact
Posts: 42
Joined: 4 September 2008
Year and Model: 96 850 glt n/a
Location: churchville va

Post by rogreact »

If you throw the flame trap away what do you replace it with? A piece of hose? I am a novice

jblackburn
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Post by jblackburn »

rogreact wrote:If you throw the flame trap away what do you replace it with? A piece of hose? I am a novice
Nothing. Remove it and put the hose back in to the throttle body hose - the "flame trap" is just a plastic disc that fits inside the hose that serves only to clog.
'98 S70 T5
2016 Chevy Cruze Premier


A learning experience is one of those things that says, "You know that thing you just did? Don't do that."

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