TOYOTA PREVIA 91-97 REPAIR MANUAL

1-34 GENERAL INFORMATION AND MAINTENANCE

never be gapped or cleaned. Inspect the plugs for damage and depos
can give you a good idea as to how well your engine is running.

Spark Plug Wires

TESTING

I See Figure 90

At every tune-up/inspection, visually check the spark plug cables or
burns cuts, or breaks in the insulation. Check the boots and the nipples on
the distributor cap and/or coil. Replace any damaged wiring.
Every 50,000 miles (80,000 Km) or 60 months, the resistance of tie
wires should be checked with an ohmmeter. Wires with excessive resistance
will cause misfiring, and may make the engine difficult to start in darjip
weather.
Using an ohmmeter, measure the resistance of the plug wire. Placjj the
negative terminal of the ohmmeter on the cap end of the wire and thg posi-
tive terminal end on the plug end. Maximum resistance should be 25<kilo-
meter per wire. If the resistance is not within specifications, it is advisable
to replace all the plug wires as a set.

Fig. 90 Checking individual plug wire resistance with a digital

ohmmeter

Fig. 91 Release the clip on each wire to remove them from the

cap

Fig. 92 Unscrew the retainers and remove the cap from the dis-

tributor

Distributor Cap and Rotor

REMOVAL & INSTALLATION

I See Figures 91, 92, 93, 94 and 95

1. Remove the RH seat and No. 2 cylinder head cover.
   a. Remove the 3 screws and scuff plate.
   b. Remove the bolt and disconnect the RH seat belt from the f
   floor panel.
   c. Remove the 4 bolts and the RH front seat.
   d. Remove the 2 bolts and the RH front seat leg.
   e. Remove the 2 bolts and the jack holder.
   f. Remove the 9 bolts and the RH engine service cover.


2. Label and disconnect the spark plug wires from the distribut(


3. Unscrew the retainers and remove the cap from the distributoi


4. Remove the screw from the rotor and pull it off.
   To install:


5. Position the rotor on the distributor, and tighten the retaining
   screws.


6. Place the cap into position and secure with the retaining sere*

ont

cap.

Fig. 93 Remove the screw and remove the rotor