Question about 1986 Mazda B-Series

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Oil leak 1986 mazda with 2 litre engine is leaking oil through pcv valve into airbox (bad)

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  • Darrell May 11, 2010

    I believe that the airbox would have oil from the crankcase breather not the pcv.in fact you may have a bad pcv valve for $5.00I would replace it anyway,if not then you have a ring problem.but make sure the pcv is working and has a good vacuum supply.hope it works have a good dayDB

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6 Suggested Answers

  • 1 Answer

SOURCE: 97 neon oil leak

Solution: Maybe.

Rear main seal is probably the problem.

My 1997 Dodge Neon has this same problem. My father-in-law (who used to be a mechanic) checked the car for me and found the rear main seal needs replacing.

SEScott1217

Posted on Dec 10, 2008

  • 217 Answers

SOURCE: vacuum leak pcv valve and assembly 1999 ss camaro

what engine? please respone i will try and help

Posted on Jan 31, 2009

  • 49 Answers

SOURCE: 2000 Daewoo Nubira PCV valve location.

Go to your local auto parts store and look for a chiltons or haynes repair manual for your make and model of car. 2000 daewoo nubria. They might already have one open and available for your reference, otherwise its probably $20.00 for one. Do a search online in a forum specifically for daewoos. there might be someone else that has this info available.

Posted on Feb 27, 2009

co7196
  • 3433 Answers

SOURCE: 2004 Mazda MPV vacuum line from pcv valve and

You have the wrong type hose on the pcv valvle. It isn't vacuum hose.

Posted on Nov 12, 2009

Testimonial: "thank you you have been very helpful i understand now but the hose that is on the new pcv valve is a vacuum hose "

  • 1 Answer

SOURCE: oil leak in my 98 mazda protege

Could be a rear main seal.

Posted on Feb 01, 2010

  • 216 Answers

SOURCE: 2005 mazda 3 2.3l that is burning oil (no leaks)

possibly the pcv but check if your cars exhaust smoke is blueish or white in color if it does and your car doesnt have an oil leak then sure its burning engine oil along with fuel, the piston rings is defective, since you replaced engine oil the additive that the owner has put with the oil to prevent blowby is gone thats why it starts burning oil.....

Posted on Apr 14, 2010

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3 Answers

What problems are caused by a bad pcv valve


https://www.autorepairhelp.us/pcv-valve-related-symptoms-and-problems/

Mar 04, 2015 | 2004 Dodge Neon

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Why do I have massive engine oil loss, with no external leak?


Here is an article explaining a common engine failure with this particular engine: http://apa.ca/readarticle.asp?id=547

Logic would tell you that even though a leak down test was performed, that if you do not have oil in the coolant, or any kind of oil leak, that the oil is going out the tailpipe.....

Apr 25, 2014 | 2006 Mazda 5 2.0

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Excessive oil usage. Uses one quart/1,500 miles. Has 206,000 miles V6 3.6L


use 2 tools .
a compression guage. (RTM about the oil trick)
and the leak down tool , at spark holes.
this tells you the ring leak down rates, done correctly
all shops worth salt, know it.
if car smokes, bingo
if only smokes first start up, bad valve seals.

at 200k , this can be normal, if not freq. oil changes or was overheated.

a pro can tell you what leaks with the leak tool
valves or rings, or other places....all bad....

Feb 18, 2014 | 2005 Jeep Grand Cherokee

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My toyota tazz 2006 model is leaking oil from underneath ,i went to the mechanics and they removed the samp and put new gasket seal still its leaking.Every 2 weeks i have to buy 5 litres of oil


If its still leaking from the pan gasket then replace the pan and also check if the PCV positive crank case valve is NOT blocked as there could be lot of pressure building up in the engine.

Nov 03, 2013 | 2005 Toyota Tazz 130

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1998 Chevy Malibu is using excessive oil. Had an oil change done back in October 2012 . Then checked Oil level in December of 2012 and was about 3/4 low in oil! why ?


first thing check make sure oil pan drain plug tight. check make sure oil filter tight. try tighten oil filter by hand see if turn tighten oil filter clockwise direcction if all is good. how many miles on vechicle.could have oil leaks park vechicle in spot that clean.move vechicle see if you see oil spots on ground if yes.your front timing cover seal leaking oil or rear main oil seal ;eaking.or valve cover gaskets leaking.if find no oil leaks more likely engine burning oil.replace pcv valve.check air filter if you see oil in air filter housing either have bad pcv valve or pcv not getting vacuum make sure pcv valve getting vacuum when engine running vacuum should be felt at pcv if not pcv valve bad or pcv hose disconnected broken or plugged.if pcv valve okay engine has worn piston rings.worn valve seals or guides or oil return holes stopped up thats all possible reasons for engine burning oil.if spark plugs oil fouled engine burning oil.

Jan 11, 2013 | 1998 Chevrolet Malibu

1 Answer

Burn oil after a long trip


engine burning oil could have worn piston rings.worn valve stem seals or engine oil return holes stopped up.could have faulty pcv valve.make sure pcv getting vacuum remove pcv while engine running should feel vacuum if not pcv faulty or pcv vacuum hose disconnect or broken.check where you park your vechicle if you see oil spots engine has leaking pan gasket,valve cover gaskets could be leaking oil and the front crankshaft seal or rear main seal could be leaking oil.check make sure oil filter hand tight and check oil pan drain plug make sure its tight.

Dec 28, 2012 | 1998 Ford Windstar

1 Answer

Using oil - 1/2 qt every 200 miles


Hi!
Sounds like you either have a problem with the rings, or a PCV valve leak. Being an engine that is what 15 years old? It could go either way. I would start with pulling the hose off the PCV valve and making sure that no oil is being allowed to get into it. If so, then you have found a bad valve. Those are cheap. A set of rings on the other hand..?? Anyways, Good luck, and if it is the PCV valve leaking oil into the cylinders then make sure to change the spark plugs.

Something else that will cause it is just plain using the wrong oil for the engine.. So you will want to look into that.

May 24, 2011 | 1996 Dodge Caravan

1 Answer

During an oil change at jiffy lube, the car drove in fine, but once the oil change was done the car wouldn't start. The engine would turn over and it looked like the engine was shaking around a lot. They...


Many times when oil appears in your air intake and in the air filter this is usually caused by a plugged pcv valve Positive crankcase ventilation valve it costs anywhere from 3-10 dollars.As far as it not starting my guess is they checked the air filter and left a vacuum hose or airbox open.Some of these vehicle will barely run if an air leak is present at the airbox containing the air filter.Would double check for any vacuum lines that may have been disconnected around the air box and that the box is shut and sealed properly.

Nov 29, 2010 | 1997 Subaru Legacy

3 Answers

2005 mazda 3 2.3l that is burning oil (no leaks)


possibly the pcv but check if your cars exhaust smoke is blueish or white in color if it does and your car doesnt have an oil leak then sure its burning engine oil along with fuel, the piston rings is defective, since you replaced engine oil the additive that the owner has put with the oil to prevent blowby is gone thats why it starts burning oil.....

Apr 14, 2010 | 2005 Mazda 6

1 Answer

Low on engine oil


Well, if there are no leaks, then it has to be piston rings or valve seals. If it's only burning a quart every 1500 miles, you would barely see any smoke, and by the standards of 20 or 30 years ago, that was normal.

Jul 30, 2009 | 2005 Chevrolet Silverado 1500HD

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