I have a 2003 Protege 5 that is burning oil. It goes through about 2 quarts of oil in just under 2 weeks. Every time I start it in the morning or after about 6-8 hours of sitting it blows out smoke. We have replaced the PCV valve twice, put on a brand new head with new seals and everything, spark plugs are new, replaced the head gasket and checked the compression on the piston rings. Compression is good. We are stumped as to what else could be the problem. PLEASE HELP!
Here's some pictures of the motor and head before and after I installed the new head. Same smoking problem . . .
Old head looked like this on cyl 1 exhaust port
Exhaust manifold and gasket was soaked with oil on cyl 1
I hope the pictures help show what the problem is. I'm about to call if quits and go for a new motor but I don't want to.
At this point anything could be possible. My thoughts are:
1) Possible the seals/guides are bad again in the new head (but not likely. I grabbed the valve with pliers through the exhaust port and I didn't feel any play)
2) there is a small crack in the oil galley from the block to the head leaking oil into the cylinder (thus causing the same problem regardless of old or new head)
3) the oil ring on the piston is bad (even though compression is ~200PSI in all cylinders)
When I bought this car it didn't seem to smoke at all for the first week or two, until I changed the oil and filter in it myself (because I figured it should be done not knowing last time it was changed)
Used a fram filter and 4 quarts syn blend valvoline 5w-30.
I noticed that it did have a genuine Mazda parts filter on it ( which shows the owner took good care of it and the carfax showed it went to the dealership every 3k miles for a oil change)
Right after the oil change it started smoking. We noticed it in the morning after it's sat overnight, or if the car has sat for 6-8 hours or longer. But if it's driven and then only sat for 1-4 hours it starts right up and it won't smoke.
It hesitates real bad between 2-5k rpms, almost no power. It feels as if I'm towing a 3,000lb trailer behind me. I have to floor it to get me and 3 passengers up to speed while merging on the freeway, and it takes about 12-15 seconds to get up to 65.
This is the same problem that
Carbon Deposits on piston heads
Cleaned deposits and wiped down cylinder walls with brake clean
Old head looked like this . . .
New head next to old
New head exhaust ports
All new gaskets
AND AFTER DRIVING WITH THE NEW HEAD for 1,000 Miles, THIS IS WHAT IT LOOKS LIKE AGAIN!
Cylinder no 1 Exhaust Port and valves (note, small bit of oil dripping down from valve guide - are they supposed to do that a little?)
I hope the pictures help show what the problem is. I'm about to call if quits and go for a new motor but I don't want to.
At this point anything could be possible. My thoughts are:
1) Possible the seals/guides are bad again in the new head (but not likely. I grabbed the valve with pliers through the exhaust port and I didn't feel any play)
2) there is a small crack in the oil galley from the block to the head leaking oil into the cylinder (thus causing the same problem regardless of old or new head)
3) the oil ring on the piston is bad (even though compression is ~200PSI in all cylinders)
When I bought this car it didn't seem to smoke at all for the first week or two, until I changed the oil and filter in it myself (because I figured it should be done not knowing last time it was changed)
Used a fram filter and 4 quarts syn blend valvoline 5w-30.
I noticed that it did have a genuine Mazda parts filter on it ( which shows the owner took good care of it and the carfax showed it went to the dealership every 3k miles for a oil change)
Right after the oil change it started smoking. We noticed it in the morning after it's sat overnight, or if the car has sat for 6-8 hours or longer. But if it's driven and then only sat for 1-4 hours it starts right up and it won't smoke.
It hesitates real bad between 2-5k rpms, almost no power. It feels as if I'm towing a 3,000lb trailer behind me. I have to floor it to get me and 3 passengers up to speed while merging on the freeway, and it takes about 12-15 seconds to get up to 65.
This is the same problem that BRIGHT ON3 originally posted on this topic, but it was 2 years ago.
