What does an egr and a pcv actually do?
VT Woodsman
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Thanks fellas.
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What does an egr and a pcv actually do?
- Thread starter VT Woodsman
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IOPort51
NOT the voice of reason Jeep-CJ.com
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4.2 W/MC2100 carb, 4.0 head W/3 angle valves,SS Header,TFI ignition with MSB-6 offroad module,CS144 140 amp RPS alternator with remote regulator T-150,d-20,Dana 44 with OX lock and disk brakes. D-30 with Spartin locker,
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EGR is exhaust gas recirculation. It introduces a specific amount of CO (carbon monoxide) into the intake manifold. as it turns out, this improves fuel efficiency, reduces emmisions and smooths the idle. As the idle goes I won't say it smooths the idle but if you don't have a working EGR it won't idle as smoothly.
PCV Positive Crankcase ventilation valve. Allows cylinder blow by and oil vapor to be drawn from the bottom end of the engine. I think the valve is to regulate the amount of vacuum used. with out the valve it would be a large leak.
PCV Positive Crankcase ventilation valve. Allows cylinder blow by and oil vapor to be drawn from the bottom end of the engine. I think the valve is to regulate the amount of vacuum used. with out the valve it would be a large leak.
derf
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The PCV valve is only a check valve. It's only really there to keep air flowing in one direction. That is, from the crank case to the carburetor.