fairly significant
Typical Repair Cost:
No data
Average Mileage:
204,000 miles
Total Complaints:
1 complaints

Most common solutions:

  1. replace the valve cover bolts and gasket (1 reports)
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problem #1

Nov 202019

Tacoma SR5 3.4L V6

  • Automatic transmission
  • 204,000 miles

Only a few people actually know about this 3.4 Liter Toyota engine problem in both Tacoma and 4 Runner where the valve cover bolts need to be re-tightened every 6 months because they constantly work themselves loose or else the valve cover constantly leaks oil even with new gaskets. The only solution is to have the valve cover/ crankcase bolt holes re-threaded and put new bolts. It's been this way for as many years as I can remember and is a fire hazard because the oil leaks onto the exhaust manifolds.

- Korey M., Fort Payne, AL, US