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I constantly find oil in the air intake after cleaning it out. WHY!

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Worn rings, a bad head gasket, maybe even a bad PVC valve depending on the year.

Posted on May 26, 2011

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Posted on Jan 02, 2017

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Would a bad oil pressure switch cause a no start on a 98 b2500


Hi,
Symptoms of a bad or failing Engine Oil Pressure Sensor
  • Oil Pressure Light comes on, and you check the engine oil level, But oil level is okay, you can blame the false reading on the sensor.
  • Oil Pressure Light blinking constantly. This is the normal >check< oil pressure sensor Warning that the sensor is going out.
  • If the sensor is giving false readings, Dispite oil level, the sensor could be replaced.
If the Sensor is currently not working, and does not warn you of engine oil level, and oil level gets extremely low, The Engine could burn up/stall due to lack of oil, and may not restart.
Then you could probably blame it on the sensor.
But really would be lack of oil.

Intermittent No Start,
Common causes deal with 3 basic systems/areas of engin
  1. Compression, its the build up of air and fuel into the engines cylinders. Then is compressed by the pistons. And is under pressure. FAILURE An Air leak (vacumm leak) will allow pressure to escape.
  2. Ignition System, good battery, good relays, wires are not loose or disconnected, good 10volts to starter, 10volts to distributer>gives 20kvolts to spark plugs>has strong spark to ignite compressed air in cylinders. Other sensors need to work. Crankshaft sensor(ccs) Throttle Position Sensor(TPS), +more
  3. Air/fuel Ratio, Air Intake Manifold, and Fuel Pressure Sensor *Fuel Injection Pressure Sensor---if car is fuel injected*, air filter is clean and intake manifold hose, Throttle Plate Acuater, Idle Air Contro Valve(IAC). Also vacumm leak cause no start. To much air not enough fuel will cause lean fuel mixter==low power, low idle, no start.......To much fuel not enough air will cause rich fuel mixter==too much fuel could cause engine knock, flooding of engine wet spark plugs, No Start
Scan Vehicle computer for Codes, Places like AutoZone---Discount AutoParts will connect scanner for free, And Code Will say What is wrong with Vehicle,

Mar 08, 2017 | Cars & Trucks

1 Answer

How do i fix oil going into air intake manifold ?


check and make sure push rod didnt damage head,rocker , valve or lifter [which i would replace]if all looks good clean repair and replace

Jul 10, 2016 | 1997 Ford F250 SuperCab

1 Answer

Will oil come to air seprator if there is any problem in turbo


If there is a problem in a turbo that allows oil to the air intake or exhaust then it will show as smoke out of the exhaust and a constant requirement to top up the engine oil level.. Oil in the intake manifold may be from the PCV valve and excessive blow by .

Apr 21, 2014 | Cars & Trucks

1 Answer

Removed air intake hose to clean throttle body and noticed oil inside. Why???????????


The pcv valve vents the crankcase vapors into the intake to be burned. That vapor has oil in it and the oil will sometimes accumulate in the hose and throttle body. It's normal for all cars to have a bit of oil in there. Just needs to be cleaned out every so often.

Jan 27, 2011 | Honda Accord Cars & Trucks

1 Answer

Constant dead battery. Constant changing of spark plugs and coils and plug wires. Constant change of battery. When starts and driving, takes no more than 3 miles for the engine to get warmed up and if I...


Sounds like you are right on the apex seals. Oil coming from the intake is probably from excessive blowby pressure in the engine due to bad seals. The battery could be bad from age, is it the original battery?

Dec 23, 2010 | 2004 Mazda RX-8

1 Answer

1998 Ford Windstar 3.8L ScanTool says that Bank 1 is lean


if your getting oil in the air filter area, you have a leaking intake gasket or a leaking head gasket, run a compression test on it,
if the compression is where it should be on all cylinders then its a leaking intake gasket!!!

Mar 04, 2010 | 1998 Ford Windstar

3 Answers

I am installing a Holley 2818 on my '65 327 and need help with routing the PCV lines. Which line goes to the PCV inlet on the carb? The rear block inlet or the one on the oil filler neck?


On the 2818 holley there is a calibrated elbow on drivers side of carb about centre of the main body.This connects to oil filler stand pipe in front of intake.Fresh air hose goes from air cleaner to back of block where road draft tube used to be before PCV came along.
The calibrated elbow serves as PCV metered orifice.Be sure flame arrester screen is inside of air cleaner on fresh air connection.

George W.

Nov 02, 2009 | 1965 Chevrolet Corvette

1 Answer

Car does not start. Had oil in throttle body and air intake boot.


hi has this a turbo if so would say air leak,check hoses

Jun 07, 2009 | 1999 Chevrolet Malibu

1 Answer

It was running fine until i changed the oil,


MAY HAVE DISLODGED SOMETHING WHEN YOU CHANGED THE AIR FILTER??? COULD BE WRONG VICOSITY OF OIL, WHAT I MEAN IS IF YOU USED A REALLY THICK OIL SUCH AS 20-50 THEN THAT WILL ALSO CAUSE ISSUE. DID YOU HAVE TO DISCONNECT ANYTHING TO GET AIR FILTER OUT THAT MAYBE YOU DID NOT RECONNECT? YOU MIGHT PULL AIR INTAKE BOX OFF AND CLEAN REALLY WELL. CHECK THE T.B.I UNIT TO MAKE SURE THE INJECTOR WIRES ARE BOTH STILL HOOKED UP AND NOT GROUNDING OUT, GM AND CHRYSLER WERE BAD FOR THIS HAPPENING IN THE LATE 80'S. THE WIRES GO BRITTLE FROM THE FUEL AND SNAP OR CONDUIT FREYS. CLEAN OUT WITH A GOOD AIR INTAKE CLEANER THEN TRY AGAIN. LET ME KNOW THE OUTCOME.

Feb 23, 2009 | 1989 Jeep Cherokee

1 Answer

1996 jetta runs very rich


Hi!
From your brief desription I feel maybe the problem is located elsewhere, however to start helping with your request you could possibly purchase some intake cleaner, there are quite a few on the market that vary in cost. I have had fantastic results with (Hot Shot Power Boost) it is a tall aerosol can not too expensive and you spray it sensibly directly into to your intake manifold or down the throat of Carburated Engines whilst running on tickover.(Follow instructions fully)
Another way is to use additives in the fuel but this is time consuming and takes forever to achieve results, finally you could remove the whole intake system and clean it with solvents in a parts washer?
I feel the main reason possibly is Engine Breathing, when an engine wears the bores and piston rings allow gasses to pass into the crankcase therefore pressurising the engine slightly, this forces oil out of any weak area's and mainly from breather pipes such as into air intake.
Maybe a good engine oil flush and quality oil replacement with filter might help but in the long run you'll have to live with it.
If when warm you take the pipe from the engine to the Air filter off does is blow blueish vapour? if it does then you could filter it away from the intake to save clogging.
Good Luck!
Hope this FixYa's problem?
Paul 'W'

Jan 04, 2009 | 1996 Volkswagen Jetta

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