Why would it be leaking oil and over heating?

Tiny
ANDREWCOAKLEY
  • MEMBER
  • 1994 TOYOTA PASEO
  • 250,000 MILES
Just Put in a new Radator, therostate, timing belt cover and repalced both belts. I try to drive it 5 miles. It was fine for about 2 miles then it overheated again to the point I melted it my timing belt cover (Top cover) wich I just replaced. The Radator sill has anti-freeze in it and seems normal. When I did an oil change on it the oil smelt really nasty. Im not sure if it is my head gasket or not.
Tuesday, August 28th, 2012 AT 4:13 AM

5 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Is coolant in radiator full?
Was system bled of air?
Are the cooling fans working?
It is possible the head gasket is bad due to previous overheating as replacement of the radiator and thermostat indicates. Further testings would be required but the timing belt cover melting does not bode well.
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Tuesday, August 28th, 2012 AT 5:18 AM
Tiny
ANDREWCOAKLEY
  • MEMBER
  • 14 POSTS
Coolamt is full. Coolant fans work. I didnt bleed the air out? How do I bleed the air out? Thanks for the fast response.
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Tuesday, August 28th, 2012 AT 12:26 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
After everything installed, top up coolant. Run engine without radiator cap for a few minutes. Top up coolant whenever necessary. After 5 minutes, turn engine off.
Wait a few minutes and top up coolant. Start engine and top up coolant. Once coolant level stabilises, close radiator cap.

Run until operating temperature and stop engine. Wait for engine to cool down before removing radiator cap to check. Repeat above process until coolant stabilises.

The oil leak and melting timing belt cover indicates you most probably has damaged the head gasket.
You can try retorquing the cylinder head bolts to see if helps.
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Tuesday, August 28th, 2012 AT 6:01 PM
Tiny
ANDREWCOAKLEY
  • MEMBER
  • 14 POSTS
Thanks for all the info. Greatly apprecate it.
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Tuesday, August 28th, 2012 AT 6:08 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
You're welcome.

Btw I forgot one thing, turn the heater on while doing the bleeding, that would get all the air out of system as well.
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Tuesday, August 28th, 2012 AT 6:13 PM

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