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Here is the deal. Easy to complex. 1. The EGR vale may be faulty"pluged up". The EGR hose and or the orfice that it connects to may be pluged up with carbon. This is common on engines that burn some oil. Disassemble and clean hose and orfice. Replace the PCV vale. 2. A blown headgasket can put pressure into the engine.It does this by letting cylender pressure vent into the crank case. Its too much for the PCV to vent so the engine ends up pressurized. 3.Bad rings can cause a pressurized crank case. what happens here is that the combustion gas passed by the worn out rings and ends up in the crank case. As you can see, if its not a PCV vale problem the repairs will cost some real money. Sometimes it better to just go and get a good used engine to relace a sick one.

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โˆ™ 2004-05-14 15:53:32
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Q: What can cause pressure in an engine crankcase?
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Related questions

Where is the crankcase pressure sensor on a cummins isx engine?

In crankcase filter box

What is the purpose of a PCV valve on the 93 Acura Legend?

A PCV valve is for positive crankcase ventilation. It is to keep crankcase pressure from building up in the engine. If it does it can cause seal leakage, air filter contamination and engine blowby.

Can blow by be caused by a faulty turbo?

not really. You can get blowby in the turbo itself from high crankcase pressure, but a turbo won't cause engine blowby.

What can cause gas to get into the crankcase on a 97 Pontiac 4-cylinder fuel injected 2.2?

Possible causes of fuel in crankcase are: Leaking injector at shutdown, flooding of the engine due to hard starting, defective fuel pressure regulator. A fuel pressure check for drop of fuel pressure at shut down will verify if an injector is leaking. Get this fixed ASAP, and stop driving the car until you do. Fuel in the crankcase will cause severe engine wear and destroy this engine. Change the oil and filter if you have to drive it anywhere for repair.

Why must the crankcase be ventilated?

Over pressure in the engine results in problems, e.g. oil leakage, over pressure in the engine will cause the pressure to leak through the seals for example oil filler cap and cylinder head cover, at the same time causing engine oil loss.

What causes high crankcase pressure?

High crankcase pressure usually would be caused by clogged oil journals in the engine. There are passages through out the engine allowing gasses to escape from it. Older Ford Trucks actually had a vent tube that stuck out of the bottom of the engine to release this pressure. Burned valves and bad lifters and/or push rods can cause this also. Generally a tear down would be necessary to pin point the problem.

What is the meaning of PCV system in an engine?

PCV stands for POSITIVE CRANKCASE VENTILATION When the engine is running it builds pressure inside of the engine and if the pressure is not released then it will blow out the engine oil gaskets and leak oil.

What is crankcase oil?

crankcase oil is the oil in the engine .some call it crankcase oil some call it engine oil

What is the engine crankcase?

the crankcase is below the engine block and holds the crankshaft pasta master

What would cause low power in 5.9l under a load?

Excessive blow by from an engine position sensor. You would check this by verifying crankcase pressure and making sure the engine is in proper time and valves properly adjusted.

Do you put crankcase oil directly to the engine as you do with engine oil?

Crankcase oil is engine oil , so yes

Suction in engine oil dipstick when car is on?

Vacuum should always be present in crankcase, it is provided by the PCV (positive crankcase ventilation system) pressure is what you don't want to see.

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