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Volvo 200 » PCV Flame Trap 1988-1995

Volvo uses a small in-line filter to manage positive crankcase ventilation on their 4 cylinder engines. The ventilation system incorporates a small flame trap filter (PCV) to protect against possible crankcase explosions due to a backfire. This filter is overlooked in most workshop manuals and without periodic maintenance it will plug up with oil deposits and cause excessive crankcase pressure, which in turn cause significant oil leaks all over the engine. An additional contributor to this problem is the fact that on these models, the filter and filter holder are buried below the intake manifold and pretty tough to access. We recommend checking the flame trap condition at every oil change.

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Customer Product Reviews

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3501707K Reviewed by JIM ARMITAGE from PORT MACQUARIE NSW AUSTRALIA

I RECENTLY HAD MY MECHANIC REPLACE THE FLAME TRAP, THE DIFFERENCE WAS AMAZING. NOW RUNS MUCH QUIETER AND (TO ME) THE ENGINE RUNS SMOOTHER. ASKED MECHANIC IF THE FILTER WAS BLOCKED, NO, BUT THE HOSE INTO THE FILTER WAS! BEST THING I'VE DONE IN THREE YEARS OF OWNING MY 240GLE.

JIM ARMITAGE

June 2008
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3501707K Reviewed by Anonymous

thank you IPD for info on replacing the flame trap mine wasn't plug'd but the hose was split wide open at the bottom.

April 2008
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