4MG 3406B PCV valve
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by mile marker 27, Feb 11, 2022.
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Are you just needing the filtered breather attachment?
PCV valves are for gas enginesOxbow, mile marker 27 and spsauerland Thank this. -
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This what you are looking for?Oxbow, mile marker 27 and BoxCarKidd Thank this. -
Ended up it had an exhaust valve guide with excessive clearance. Maybe 3/16" with the spring still on it. Soot from the exhaust was passing into the crankcase. Reconditioned head had only been on about 6 weeks.
Hope that is not your problem, just sharing.Oxbow, mile marker 27 and spsauerland Thank this.
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