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Tachometer Test

Connect a tune-up test tachometer and start engine. Compare vehicle tachometer RPM reading against test tachometer. If vehicle tachometer reading is outside allowable range, replace tachometer. See TACHOMETER TEST  table.

TACHOMETER TEST

Vehicle RPM Reading (1) Allowable Range
700 610-750
1000 900-1000
2000 1850-2150
3000 2800-3200
4000 3800-4200
5000 4800-5200
6000 5750-6250
7000 6700-7300
(1) As measured on test tachometer.