Bright on3
Member
Valves have warped and car wont start anymore..
2002 P5 smoking, burning oil, rough idle...
- Thread starter Bright on3
- Start date
Valves have warped and car wont start anymore..
[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]
I never said that valves don't affect compression. Read my comment again.
"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."
I agree valves do affect compression, but do not agree the valve stem seals affect compression. Compression can only be made when intake and exhaust valves are closed. When the valves are closed the intake and exhaust ports are blocked because the valves are closed, sealing the combustion chamber. no air can enter or leave the combustion chamber during compression, assuming the valve seats and valves are in good condition. Consequently, the valve stem seals are not involved in the compression process.
Blue smoke is usually caused by oil, it can come from any leak that enters the exhaust or intake systems or blows by the rings. Blue smoke indicates oil leaks but doesn't identify the source of the leak.
Clifton
I never said that valves don't affect compression. Read my comment again.
"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."
I agree valves do affect compression, but do not agree the valve stem seals affect compression. Compression can only be made when intake and exhaust valves are closed. When the valves are closed the intake and exhaust ports are blocked because the valves are closed, sealing the combustion chamber. no air can enter or leave the combustion chamber during compression, assuming the valve seats and valves are in good condition. Consequently, the valve stem seals are not involved in the compression process.
Blue smoke is usually caused by oil, it can come from any leak that enters the exhaust or intake systems or blows by the rings. Blue smoke indicates oil leaks but doesn't identify the source of the leak.
Clifton
Last edited:
Bright on3
Member
So far i have started tearing the engine down. The intake and exhaust manifold have ALOT of oil in them. The problem i was having with the oil leaking under the car was actually leaking from the exhaust manfold gasket. I am guess this would be coming from the valve problem... I will keep everyone updated on what i find out. I will pull the head tomorrow and see if i can find out what the issue is..
I am going to fix this engine i guess since i cant find a speed motor anywhere :/
I am going to fix this engine i guess since i cant find a speed motor anywhere :/
- :
- 03.5 YLW MSP
um... the speed motor and the reg pro motor are the same other then the oil pan griddle(oil return line), msp cames(wouldnt work well with NA I dont think), and the oil filter thing(I forget what its called). All of those things will unbolt from a "speed" motor and bolt to a "reg" pro motor.
Bright on3
Member
where to find a speed motor or parts?
mp3-79bronco
Member
- :
- 2001 protege mp3
OMG THERE IS NO SPEED MOTOR...the one you have now is the exact same except for one plate that has a hole for a oil return line off a turbo...
Bright on3
Member
and i find the parts where??
- :
- 03.5 YLW MSP
mp3-79bronco
Member
- :
- 2001 protege mp3
what parts? rebuild kit? goto protegegarage.com
- :
- 03.5 YLW MSP
I think he is asking about the MSP oil pan griddle thing.
Bright on3
Member
..
Last edited:
Bright on3
Member
Ok i got the engine broke down... the head is going to the shop to get the valves redone and i am putting new pistons/rings in the bottom end. Before i tore the engine down... i discovered the reason the car would no longer run is because the coilpacks are not sparking.. anyone know the reason why the coilpacks wouldnt be getting spark? The check engine light will not come on no matter what now ( not even when the key is on the on position but the engine is off) and the engine temp gauge goes to the highest point on the gauge when i turn the key to on. Any idea what is going on with the electronics? possibly a fuse, relay or something?
Bright on3
Member
anyone lol
My 95 626 mazda smokes when first start.
I'm having the same problem as you are. I replaced the head gasket and valves. It did not smoke the next day I turned it on. But then a day later I have the same problem. I was thinking that maybe I did not torque the bolts with the right specs. I did check the cylinders and they appear fine. Did you finally get your car going. Did you find the problem. Please if you did can you post it for me. Thank you.
I'm having the same problem as you are. I replaced the head gasket and valves. It did not smoke the next day I turned it on. But then a day later I have the same problem. I was thinking that maybe I did not torque the bolts with the right specs. I did check the cylinders and they appear fine. Did you finally get your car going. Did you find the problem. Please if you did can you post it for me. Thank you.
I believe im having the same exact problem with my 2002 p5, i have the white/blueish smoke, have a leak from above the oil pan, replaced the gasket in the oil pan so its no longer leaking from there, its leaking above it, i dont really know engine part names to well, but im sure its the same exact problem this dude is having, the car has 108k miles on it, im using 10-40w synthetic blend, should i use heavier? go full synthetic, as far as having the problem fixed, whats the best recommendation?
now also, my car has an AFC ( air fuel controller ) and i really dont even know how to set it properly, if it's setup properly or what, have had the car for about a month only.....it's an apexi neo AFC....if anyone is in south florida PLEASE get at me...thanks.
now also, my car has an AFC ( air fuel controller ) and i really dont even know how to set it properly, if it's setup properly or what, have had the car for about a month only.....it's an apexi neo AFC....if anyone is in south florida PLEASE get at me...thanks.
Kurtanius21
Member
leaking above it meaning the sides of the motor around the oil pan? If so, these could be your seals. The engine seals prevent the oil from seeping past the crankshaft. You need to be more specifiv with symptoms. You don't need to name parts specifically, just symptoms as clearly as possible.
- :
- -- 23 CX-5 --
There is a part in between the block & the pan that has gasket on both sides of it. You may have stopped the leaking by the pan but may still have leak where block meets that other piece above the pan. If it was crank seal it'd be oily on the front side of motor where belts are, if it was rrmain then you have oily chattering clutch eventually.
yea its leaking on the part above the oil pan, towards the back and right side section i believe, so if i get the seals replaced would that solve my burning oil problem as well? because the oil level drops a bit every week, or is the burning oil something completely diffrent?
Kurtanius21
Member
As far as I know, replacing the seal would slow oil leaking, but a faulty seal doesn't lead to burning oil. Don't quote me on that. Burning oil is caused by at least one of these two things, as far as I know, faulty piston rings and worn valve guides. Here is a tip from Tom Monroe from his engine rebuilding book, Engine Builder's Handbook
"Don't Overlook checking the Positive Crankcase ventiliation (PCV) system. High pressure in the crankcase ventilation can cause an otherwise good seal to leak."
"Before condemning the rings, check the PCV system, particularly the valve. If you shake it, the vavle should rattle. Also, remove the breaker and place your hand over its opening with the engine running. You should feel a distinct suction. If that's ok, check for restrictions in the PCV lines."
I would follow Monroe's advice. Check the PCV system. A worn seal doesn't burn oil, but it could be the byproduct of a worn PCV from excess blowby. Additionally, an overtaxed PCV burns oil.
