Login Register

850R engine w/95K miles replace or fix

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

Post Reply
sariano
Posts: 43
Joined: 3 March 2010
Year and Model: '96 850R Sportswagon
Location: Mechanicsburg, Pa 17050

Re: 850R engine w/95K miles replace or fix

Post by sariano »

thanks, I will definitely try the Seafoam, that would be a pleasant surprise.

Peggy
96' 850R Wagon
96' 850R Sedan
95' 850 T5-R Sedan

sariano
Posts: 43
Joined: 3 March 2010
Year and Model: '96 850R Sportswagon
Location: Mechanicsburg, Pa 17050

Post by sariano »

JRL wrote:Try SEAFOAM first, for 10 bucks what have you got to lose!
You may have a stuck ring or two
I had a car that 2 cylinders had 20 compression, after a SEAFOAM treatment it had over 160 in all!
We bought 4 cans of Seafoam, do you recommend following the video instructions? We're not sure where the pvc valve is?
96' 850R Wagon
96' 850R Sedan
95' 850 T5-R Sedan

Ozark Lee
MVS Moderator
Posts: 14798
Joined: 7 September 2006
Year and Model: Many Volvos
Location: USA Midwest
Has thanked: 4 times
Been thanked: 75 times

Post by Ozark Lee »

We don't have a PCV valve per se . We have a PCV system.

The appropriate place to add Seafoam to the top end is through the vacuum tree which is ender the throttle cam cover.
DSC02455.JPG
DSC02455.JPG (210.15 KiB) Viewed 1027 times
Slurp it ( the Seafoam) out of the can so as to not hydraulic lock the engine - that is, as they say in the popular vernacular, bad.

...Lee
'94 850 N/A 5 speed
'96 Platinum Edition Turbo
Previous:
1999 V70XC - Nautic Blue - Totaled while parked.
1999 V70XC - RIP - Wrecked Parts Car.
1998 S70 T5
1996 850 N/A
1989 740 GLT
1986 740 GLT
1972 142 Grand Luxe

sariano
Posts: 43
Joined: 3 March 2010
Year and Model: '96 850R Sportswagon
Location: Mechanicsburg, Pa 17050

Post by sariano »

We did the Seafoam treatment today, didnt smoke a whole lot , engine runs stronger however it didnt fix that 5th cylinder.
We've decided to sell the wagon, it's going to auction next week, if anyone is interested i need 2300, as is.
96' 850R Wagon
96' 850R Sedan
95' 850 T5-R Sedan

Post Reply
  • Similar Topics
    Replies
    Views
    Last post