Question about 1996 Volvo 850

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96 850-R recent head work 5 valves were replaced engine is now noisy but has a rythumatic sound ,runs fine need help with cause ie:stuck lifters etc. oil pressure is within specs,oil pump seal replaced give input please!

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  • milanhar Sep 30, 2009

    no,engine runs fine just noisey. at first it sounded like a deisel after a few thousand miles it seemed to quieten slightly but not volvo quiet or as quiet as it was before the head work. own 84-240/T,97-850 and 99-S/70 T-5 all of which runs very quiet thanks for your help

  • milanhar Oct 01, 2009

    was thinking along the same lines job was done by a head work facility they said the noise would go away after a few thousand miles .has 6 thousand miles and 3 oil changes. is there a technic to pumping up the lifters or should they be replaced?

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Sounds like a lifter noise or valves. Try adjusting the valves first if you don't have a lot of miles on the car since valve job, adjustment is probably all that will be needed. The valves just seated a little more and need readjusted. Good Luck!! This should solve the noise.

Posted on Oct 01, 2009

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Not sure what a rythujatic sound is...your car has hydrolic lifters, they can make a clacking noise if they are not pumping up. Oil makes them pump up, The valve replacement should not have changed the sound.Are all the other valves properly seating? Did you do the change or did a repair facility do it? If done by a pro, they should be held accountable for the sound. If the lifters aren't properly pumped, it will cause a valve lash and subsequent noise... Will not necessarily cause a noticabel performance problem but a clack.

Posted on Sep 30, 2009

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