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2001 Toyota Highlander cyl #2 misfire

Tiny
TOMALBANY
  • MEMBER
  • 2001 TOYOTA HIGHLANDER
Engine Performance problem
2001 Toyota Highlander 6 cyl All Wheel Drive Automatic

My engine is misfiring. OBD 2 scanner says cyl #2. I replaced the plug (iridium). Problem still exists. I switched the plug wire/coil with another cyl. Same problem (#2). I switched injectors arouind. Same thing (#2). Not a sludge engine. Pulled valve cover recently. Pretty clean. Frequent oil changes, although. Within the past 20,000 mi (Approx. 2 yrs) have begun to burn unusually large amounts of oil. Especially during highway trips 65-75 mph. 300 mi rd trip, 1.5 qts burned each way! Also blue smoke cloud @ cold start-up. Burns little or none driving aroun town 30-40 mph, for 2-3-4 weeks. Waddaya think?
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Sunday, October 17th, 2010 AT 2:18 PM

3 Replies

Tiny
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Hi tomalbany, Welcome to 2carpros and TY for the donation

Check and test the compression for cylinder no. 2 and also the crankshaft position sensor-
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Sunday, October 17th, 2010 AT 2:26 PM
Tiny
TOMALBANY
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Based on the senerio, do you think burned valve or worse?
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Sunday, October 17th, 2010 AT 3:39 PM
Tiny
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Could be depends on the cylinder compression both dry and wet readings- or a cylinder leakage test
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Sunday, October 17th, 2010 AT 3:45 PM

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