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Number three cylinder mis-fire

Tiny
LORAANDCOREY CARNELL
  • MEMBER
  • 1996 TOYOTA RAV4
  • 2.0L
  • 4 CYL
  • 4WD
  • AUTOMATIC
  • 211,000 MILES
Keep getting check engine light for mis-fire on number three cylinder. The only time it is noticeable is driving at fifty or above mph at light throttle. Have replaced all plugs and wires, distributor cap, rotor button, fuel injector on number three. Timing and compression is good. Replaced fuel filter, cleaned throttle body. Have not checked fuel pressure. Other than that I have no idea where else to look. Any suggestions would be greatly appreciated.
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Saturday, December 3rd, 2016 AT 12:13 PM

1 Reply

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
These are very hard to find even for a mechanic. the best option is to have a mechanic do it as it can be as sensor or injector, basic engine problem. yoy take it to them so you do not replace good parts which you very well have by now and still not solved the problem. he has to use his pro scanner to take readings while it is running. you can check fuel pressure and for a vacuum leak but other than that leave this to the pros. see link.
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
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Saturday, December 3rd, 2016 AT 12:23 PM

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