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Welp... I want another 850... Maybe this time's the charm?

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krush
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Joined: 08 Mar 2010, 00:10
Year and Model: 1993 850 GLT
Location: Arizona

Post by krush »

So, it's been about 8 years since I've been here. I have yet to land another 850 BUT that could possibly change in the next few days depending on what you guys say.

There's an 850 Wagon up for sale on Offerup for only $500. The owner says "Smokey exhaust with rough idle."

My question is: What could cause this kind of a problem? Smokey exhaust? Rough idle I'm going to assume maybe it needs a tune up or something, but smoke in the exhaust is my biggest concern. He's selling it for best offer so if the problem isn't too bad maybe I offer him $350-$400 for it and take a few hundred to get it running right.

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abscate
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Post by abscate »

It’s usually $1500-2000 to get an old P80 to a Stage zero
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erikv11
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Post by erikv11 »

Smoky exhaust is usually burning oil (which burns gray) due to worn out valve stem seals which is a bunch of head work to fix, or you can live with it the smoke and oil consumption. Smoke may also be unburnt fuel (which leads to black smoke, running rich) from poor running condition. If it smokes all the time then the running rich is actually more likely.

I'd find out what color the smoke is.
'95 854 T-5R, Motronic 4.4, 185k
'98 V70, T5 tune-injectors-turbo, LPT engine, 304k, daily driver
'06 S60 R, 201k
'07 XC70, black, 205k
'07 XC70, willow green, 223k
gone: '96 NA 850 210k, '98 NA V70 182k, '98 S70 NA 225k, '96 855 NA 169k

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Clemens
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Post by Clemens »

Remember: there is no thing as a cheap p80. The lower the base price, the more you dump into it.
But for a few hundred you can give it a shot if it looks solid and not too badly abused.
1996 855 R,
black on black, M56 swapped, Quaife, TME 2.5 exhaust, 17 inch Volants

2010 V70 D5,
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RickHaleParker
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Post by RickHaleParker »

krush wrote: 05 Oct 2020, 19:58 My question is: What could cause this kind of a problem? Smokey exhaust? .
Look at the color and smell.

White smells like steam because it is steam. Water getting into the combustion cylinders.
Blue, Blue-gray, Gray smells like oil because it is oil. Most likely valve stem seals. Could be turbo seals. Extreme cases piston rings.
Black smells like fuel is incomplete combustion. Not all the fuel is getting burnt. Needs tune up, possibly a set of injectors.
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Post by abscate »

Green smoke..frogs in the fuel tank

Blue smoke..the car has been used for smurfing

Orange smoke....someone put Tang in the Tank
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krush
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Joined: 08 Mar 2010, 00:10
Year and Model: 1993 850 GLT
Location: Arizona

Post by krush »

So I got two replies:

I asked what year it was and if it was currently driveable:
“96 no turbo yes turns on and is drivable just that the idle acts up"

Then asked what color the smoke was:
“The color it smokes is black "

Looks like tune-up and injectors. I'm going to offer him $400 to "take it off of his hands".

How hard is it to change the injectors on this thing?

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RickHaleParker
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Post by RickHaleParker »

krush wrote: 06 Oct 2020, 11:07 How hard is it to change the injectors on this thing?
Real easy.

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2017 Ford PIU. 3.5l, Twin Turbo, 365 Hp.
............................
Past
2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000. ( Killed by a plastic radiator. )
2004 S60R, B8444S TF80 AWD. Yamaha V8 conversion ( I moved, the project did not )
2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0. ( Transmission dead after sitting for a winter )

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Cookeh
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Post by Cookeh »

Changing them is very easy, and replacement o-rings are still available. Finding replacements is much harder (in the UK at any rate, I can't speak for the US), but cleaning is a viable option.

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erikv11
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Post by erikv11 »

Yeah, just send them out for cleaning and refresh, they will be good as new.
'95 854 T-5R, Motronic 4.4, 185k
'98 V70, T5 tune-injectors-turbo, LPT engine, 304k, daily driver
'06 S60 R, 201k
'07 XC70, black, 205k
'07 XC70, willow green, 223k
gone: '96 NA 850 210k, '98 NA V70 182k, '98 S70 NA 225k, '96 855 NA 169k

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