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1993 Toyota Tercel

Tiny
BELLSTAR
  • MEMBER
  • 1993 TOYOTA TERCEL
  • 4 CYL
  • FWD
  • MANUAL
  • 117,000 MILES
I have one cylinder that loads up at low RPM.
Climbing a hill on hwy I'm now looseing speed.
Ideal is rough and sometimes dies.

Could these things be caused by head gasket or vaccum leak?

Thank Jan
Friday, February 19th, 2010 AT 9:32 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Engine running rough or misfiring can be cause by the following:
1. Defective spark plug.
2. Inadequate spark/coil, defective spark plug wire.
3. Lack of compression
4. False air leakage.
5. Faulty fuel injectors.
6. Insufficient fuel pressure.
7. Contaminated fuel.
8. EGR valve that is leaking.
9. Oxygen sensors.
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Saturday, February 20th, 2010 AT 4:51 AM

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