2002 P5 smoking, burning oil, rough idle...

[i12drivemyMP5]

Yeah, I'm thinkin black would be rings, bluish white would be oil leak & white that dissipates would be steam from water leak like from cracked head. All of these should smell different too. Black would smell like gas, bluish white would be burnt oil smell & steam would be crazy putrid eye burning antifreeze smell.

 

[Bright on3]

The smoke is blueish white and smells just like burnt oil. It seems to not smoke as bad when it warms up, but does still smoke. When it is cold is when it smokes the worst. So now i should be thinking its the rings? Cause when the rings went on my mz3 it was smoking black smoke..

 

[Bright on3]

Again, i would rather put another motor in and keep this trade than go back to the 95 integra. lol

 

[Bright on3]

i can post a video if that would help you guys give me an idea of the cause.. i could like it to be the valve seals cause i can replace those.. but will valve seals make it use oil THIS bad?

 

[mp3-79bronco]

do a compression and leak down test....problem solved

 

[slavrenz]

We can argue about the color of the smoke all day, but I can't think of anything else that would cause you to lose so much oil so quickly.

 

[Bright on3]

Alright ill do a compression and leak down this week. Which one means what is wrong tho? I guess compression means rings ,and leak down means valve seals? Correct me if im wrong please!

thanks so much for all the help guys.

 

[slavrenz]

First you do a normal compression test. If you are losing pressure in one a cylinder, it means one of three things - if there is an adjacent cylinder also losing pressure but the rest are fine, you more than likely have blown a head gasket. If not, then it means either your rings or your valves are bad. To test, pour a teaspoon of clean engine oil in through the spark plug hole and redo the compression test. The oil will temporarily seal your bad rings and you should get good compression. If your compression does indeed improve, then you have bad piston rings. If however, your compression is still bad, you have leaking valve seals.

I hope this all makes sense. Anything above 120-130 psi is w/in spec, if I recall, and I think all cylinders have to be within 25 psi or so of each other).

Try these tests, and let us know how things go.

 

[mp3-79bronco]

i thought it was within like 5 psi of each other...

 

[slavrenz]

i thought it was within like 5 psi of each other...

Nope - looking at the manual right now. It says standard pressure is 171 psi, minimum pressure is 119 psi, and max difference between cylinders is 28 psi.

 

[Bright on3]

Alright i will do this in the morning possibly.. i want to get this car running good so bad. It a awesome looking car, ill post some pics up for you guys
thank you very much for your help. i will keep this updated as soon as i find whats wrong.

 

[flash75]

I don't think bad valve stem seals or a bad PCV valve can cause a car to use a quart of oil in 20 miles in an otherwise healthy engine. I'm assuming you have looked for a big puddle of oil under the engine. Have you looked at the spark plugs? Compare them with the plugs in this link to determine their condition.
http://www.dansmc.com/Spark_Plugs/Spark_Plugs_catalog.html

Bad valve seals will not affect compression. Compression is checked within the combustion chamber when the valves close. The valve seals are outside the combustion chamber.

A leak down test only checks for leaks from the combustion chamber. By listening for escaping air it can tell you if the combustion chamber leaks through the intake, exhaust or crankcase. It does not indicate the condition of the valve stem seals.

Those checks are OK but you are going to have to at least remove the cylinder head to determine the cause of your heavy oil consumption. Be prepared to spend $$ for an engine rebuild or replacement.

Clifton

 

[Bright on3]

I have looked under the car and there is a small oil leak right under(kinda behind) the exhaust manifold on the left side. I never noticed the leak because its leaking on the skid plate and not on the ground. I still dont think its leaking very badly tho. I havent checked the plugs but i will today and let you know how they look. I really hope its the valve seals b/c if the rings are gone i would rather just put a new engine in lol. At around 2500RPM there is a sound coming from the head that almost sounds like a rattle snake buzzing or rattling(similar to the sound a SSQ Blow off valve fluter makes). But it only makes the noise at 2500PRM. Also, when i am driving and want to accelerate, the car will stumble and sputter VERY badly (at times wont even pass 4000RPM for a few seconds) from 2500RPM to 5500RPM and as soon as it gets to 5500RPM it just throws me back in the seat with power, Like all the sputter disappears. I will calculate exactly how many miles it takes to use a quart today, i was just estimating about 20miles per qt. b/c it feels so bad.

 

[slavrenz]

I don't think bad valve stem seals or a bad PCV valve can cause a car to use a quart of oil in 20 miles in an otherwise healthy engine. I'm assuming you have looked for a big puddle of oil under the engine. Have you looked at the spark plugs? Compare them with the plugs in this link to determine their condition.
http://www.dansmc.com/Spark_Plugs/Spark_Plugs_catalog.html

Bad valve seals will not affect compression. Compression is checked within the combustion chamber when the valves close. The valve seals are outside the combustion chamber.

A leak down test only checks for leaks from the combustion chamber. By listening for escaping air it can tell you if the combustion chamber leaks through the intake, exhaust or crankcase. It does not indicate the condition of the valve stem seals.

Those checks are OK but you are going to have to at least remove the cylinder head to determine the cause of your heavy oil consumption. Be prepared to spend $$ for an engine rebuild or replacement.

Clifton

You're right - I was getting some of my terminology mixed up. But if you have bad valve seals, typically don't you have valve leaks because your valves are sitting quite right in your head?

I agree that you are probably going to end up pulling the head. But those checks are still good so that you might be able to narrow down the problem before you even get in there.

And I guess I didn't give much thought to the obvious - make sure you don't have a giant pool of oil under the car (dance)

 

[flash75]

Yes there will be leaks if the seals are bad, that would perhaps add a small amount of air and maybe a drop of oil on the intake stroke. It's not a big enough difference to affect the compression reading.

I have compression and leak down gauges, and would use them if I had a problem. But if you carry the car to a good mechanic he may feel a compression and leak down check is a waste of time for Bright on3's problem. If faced with a smaller problem instead of a huge oil loss the preliminary checks would help to pin down the specific area of the problem.

Clifton

 

[slavrenz]

Yes there will be leaks if the seals are bad, that would perhaps add a small amount of air and maybe a drop of oil on the intake stroke. It's not a big enough difference to affect the compression reading.

I have compression and leak down gauges, and would use them if I had a problem. But if you carry the car to a good mechanic he may feel a compression and leak down check is a waste of time for Bright on3's problem. If faced with a smaller problem instead of a huge oil loss the preliminary checks would help to pin down the specific area of the problem.

Clifton

True enough

 

[Bright on3]

well i took the plugs out and the two on the right look perfect but the left two plugs were covered in oil and i can look down the plug hole and see oil puddled down in there. but i was driving today and the engine stopped working. It sounds like the valves warped when i try to start it. I dont know who that would happen tho b/c i kept plenty of oil in it.

Does anyone know if a mazdaspeed protege motor will fit in my P5? If so, where to find one?
Thanks everyone.

 

[StealthWyvern]

all 2.0L protege motors are the same. The MSP just has a few extra stuff bolted onto the block for the oil return for the turbo and all.

see this thread.

http://www.mazdas247.com/forum/showthread.php?t=123737670

 

[Bright on3]

alright thanks man, i am very familar with dealin with boosted engine. Just making sure it would all fit correctly.

 

[dmjddm9999]

big mistake, your valves have a huge effect on your compression and faulty valve seals will cause you to lose compression. But if you are seeing a bluish smoke then thats definately piston rings, and suggesting the amount of oil your going through, yeah that all points to piston rings