Low compression

Tiny
ALESALYNN
  • 2006 MAZDA 3
  • 2.3L
  • 4 CYL
  • 2WD
  • MANUAL
  • 136,700 MILES

Engine cranks for a while but does not turn over when trying to start it intermittently.
Two cylinders tested slow to gain compression.
Low compression at times.
Oil contaminated with fuel.
Burns oil fairly quickly.

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Friday, October 27th, 2017 AT 1:49 PM

4 Replies

Tiny
STEVE W.
  • EXPERT
  • 4,332 POSTS

Sounds like the piston rings are bad. That would account for all of the problems. Probably would be a good candidate for a good used engine or a new long block and use the current engine as a core. If there is nothing else wrong with the car.

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Friday, October 27th, 2017 AT 2:22 PM
Tiny
BIRDY
  • 2004 MAZDA 3
  • 168,000 MILES

Did a compression test on each cylinder.
The minimum is 199 psi cylinder

1:100
2:120
3:125
4:100

When I first start the car it seems to shake, sputter. After the 2nd or 3rd start it fires up runs rough than smooths out.

The only code that is showing is cylinder 2 misfire, pulled plug.
Plug is normal, checked all all were good

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Wednesday, November 1st, 2017 AT 8:50 PM (Merged)
Tiny
DAVID W GILLENWATER
  • MEMBER

The 2.2 Mazda doe's not have a valve adjustment and the smoking is from the head. The head has a valley where oil is kept at all times and the valve train is there as well valve guide seals will crack and oil will go into the cylinders. This is where you get the smoke from and some time they will not stop smoking notice on the exhaust manifold there are four caps take the caps off and you will see the cylinder that is wasting the oil valve guide crack are brake and this motor will smoke up the town. The valve train is under the oil line and that is why it will smoke notice when you pull the head there is a restricker there with the head gasket it is about the size of a dime be sure you put a new one back in it will come with the head set. If you don't put it back in it will put all the oil into the head and empty the oil pan these are very well built motors.

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Wednesday, November 1st, 2017 AT 8:50 PM (Merged)
Tiny
2CARPROS KEN
  • ADMIN
  • 12,124 POSTS

It sounds like the engine needs a valve job, I would pull the head and check the intake and exhaust valve for leakage.

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Wednesday, November 1st, 2017 AT 8:50 PM (Merged)

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