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1990 240 non turbo with high compression readings

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akkevint
Posts: 1
Joined: 12 November 2011
Year and Model: 245 DL 1980
Location: Fairbanks AK

1990 240 non turbo with high compression readings

Post by akkevint »

I recently Purchased a 1990 Volvo purchased a 1990 Volvo 240 sedan. And cylinders 12 and three I had PSI rating of 195 and in the number and cylinders 1,2,3 I had PSI rating of 195 and then the number 4 cylinder I had 200 psi reading.

Any thoughts out there about why these are so high. Maybe cat converter is plugged up?

Any comments welcomed.
AKKevinT
The Reluctant Mechanic
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lummert
Posts: 1381
Joined: 29 January 2008
Year and Model: 760 1988
Location: Portland Indiana, USA
Been thanked: 26 times

Post by lummert »

From what I read this may be the result of excessive buildup of carbon deposits on the piston top and/or combustion chamber. Normal for B230F is 130 to 160 psi.
1988 Volvo 760 Turbo Wagon
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