Question about 2003 Mitsubishi Galant

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Pressure behind the oil filler cap , pushing oil out on to motor

Pressure behind the oil filler cap , pushing oil out from under cap and spraying all over motor etc , when operating .......but car runs fine , starts fine and no black exhaust etc .......australian TJ 03 Mitsibishi Magna .3.5 v6

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Replace the PCV valve.

Posted on Feb 07, 2010


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Pcv valve I changed the head gasket in my 2002 Nissan Altima 2.5s and did a oil change and I had the oil filler cap off when I started it and it oil came out the filler

Oil supply to the overhead camshaft and valve gear is fairly vigorous and so some spray from there is to be expected without the filler cap.

Unlikely a problem with the pcv valve - they rarely give trouble unless seriously gummed up with carbon-type deposits and then a thorough clean mostly restores them.

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No oil pressure showing on guage.changed sending unit.removed oil filler cap and found I have good oil pressure

removing the oil cap does not tell you what the oil pressure is, as the oil you see is not under pressure. you need to connect an oil pressure gage and check the pressure separate from the car system to check pressure and compare to spec.

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The obvious answer would be to replace the filler cap. But I would look int why so much pressure is building under the valve cover. A Chilton/Haynes manual should give you some answers under the trouble-shooting heading.

Sep 23, 2014 | Cars & Trucks

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The emmission light of my volvo s40 2005 stays on

If your s40 is petrol motor? open the bonnet, with the motor running - if it noisier then usual, then try remove the oil filler cap or dipstick. If the noise goes away, then a fairly expensive (but not too bad) part needs replacement. The part is replaceable only, not able to be 'fixed' unfortunately. Taking the oil filler cap off reduces the built up pressure, by the clogged up part, best not to drive around with the oil filler cap off, but if this is the problem best to fix it now rather then later. This is a common maintenance issue, If this is not right after you try it please repost.

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92 ford tempo has oil coming out at the cap

I believe you do mean the oil filler cap. If is that under the cap there is a rubber seal,probably became hard and does not seal well. Renew it,either the seal if you find it or the cap itself.

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Where is Oil Pressure Switch on 1986 chevy s10
This site will help you with a diagram of it i can not find it on our site, Lee

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Oil coming out of engine oil filler cap even though i have changed oil filler cap

The engine breather pipe seems to be blocked.
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Oil leak through the distributor

why do you need to remove the filler cap when the car is running???
There is a seal around the distributor. Mark where the distributor is and remove it. Then replace the seal. Put it back together in the same location as before you removed it. It is also possible that your valve cover gasket is leaking and dripping on the distributor.
Cooling problem: Try washing the outside of the radiator where the cooling fins are. Spray it down with a really good degreaser and rinse it off. WARNING: Do NOT use high pressure because you will need a new rad after.

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2 Answers

Engine blowing oil from oil filler cap

I had the same problem. I changed the pcv valve and checked the hose. It still did the same thing. Then I checked the metal tubing that the hose connects to and found it was full of hardened gunk. I sprayed PB Blaster into the tube let it soak for awhile. Then took an old choke cable, put it on a drill and ran it into the tube like a drain snake. It took a while of doing this over and over but eventually got it cleared out. Now, no more oil all over the engine and hood compartment.  

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