burning oil, no power
#1
burning oil, no power
I have a 1990 Mazda Miata that i have had for 6 months now, it has a greddy turbo with an intercooler, bipes, larger injectors. It has been noticeably been burning oil ever since i got it and every time i top it off i have to put more oil in it. I checked the spark plugs recently and they were completely corroded with burnt oil so i got new ones and thought it would fix my problem. My problem is that it has been losing bottom end power ever since i got it(0k-4k rpm). It has gotten to the point that it does not even have the guts to get up my driveway. I was thinking that it may be the oil rings. Can anyone help me to figure out what is wrong with my car?
#12
There are four rubber grommets between the cover and the plug bores, this is a common failure. If you look down into the holes, you can tell if they are leaking. You'll find oil all around the bores.
And yes, it's more important to have all the cylinders balanced but I think the min spec on compression is 145psi so as long as your testing it correctly, your motor is just worn out.
And yes, it's more important to have all the cylinders balanced but I think the min spec on compression is 145psi so as long as your testing it correctly, your motor is just worn out.
#15
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Do the vacuum hoses from the valve cover go to the intake manifold? You might should be running them to a catch can and see if that helps. You might have a lot of oil transiting those hoses and right into your intake manifold. Give it a try and see if they spit a bunch of oil into your can due to excessive blowby. Old engines can have a lot of blowby, especially when turbocharged.
It is easy to make a DIY catch can if you are poor. Search here and also google for more ideas.
It is easy to make a DIY catch can if you are poor. Search here and also google for more ideas.
#18
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Yes it will be releasing the pressure into a container with some volume. The volume allows the gasses to slow down and lets the vapors settle and/or condense to liquid and rest in the bottom of the can. There is no reason to get complicated with adding a return to the oil pan. There will be things (like water vapor) that will be collected in the catch can that you will not want to reintroduce to your oil pan. The contents of catch cans will often look like chocolate milk because of the mixture of oil and water. The common way that catch cans are handled is that they are drained through a built-in bottom drain or simply removed and dumped out periodically. This is the normal way they are handled.
#19
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burning oil and no power do not always correlate.
how is your fuel pump?
do you have a 323 gtx PCV valve, or a factory miata one? ->try capping your intake manifold port completely and just leave the valve cover open to air for now and see if that stops the oil burning.
has the oil burning issue been consistant, or has it gotten worse?
was the oil that you observed on the spark plugs burnt oil, or oil on the white ceramic part?
how is your fuel pump?
do you have a 323 gtx PCV valve, or a factory miata one? ->try capping your intake manifold port completely and just leave the valve cover open to air for now and see if that stops the oil burning.
has the oil burning issue been consistant, or has it gotten worse?
was the oil that you observed on the spark plugs burnt oil, or oil on the white ceramic part?
#20
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do you notice any smoke out of our exhaust?? haven't noticed anyone mentione rings?
I just did a comp test and came up with these numbers 210 200 190 170 i see white smoke every now and then, I believe my head gasket might have a slight leak....
I just did a comp test and came up with these numbers 210 200 190 170 i see white smoke every now and then, I believe my head gasket might have a slight leak....