Heavy Knock Hot with Torque Applied. Opel Sintra 1997

For 1990-2009 cars

Heavy knock hot with torque applied may be caused by one or more of the following conditions:

• | Broken crankshaft balancer or pulley hub--replace the components as necessary.

• | Loose torque converter bolts--tighten the torque converter bolts and/or replace components as necessary.

• | Drive belt(s) too tight--adjust the drive belt tension to specifications.

• | Drive belt(s) nicked--replace the drive belt(s) as necessary.

• | Exhaust system grounded--reposition the exhaust system as necessary.

• | Engine flywheel cracked--replace the engine flywheel.

• | Excessive main bearing clearance--replace the component(s) as necessary.

• | Excessive rod bearing clearance--replace the component(s) as necessary.

• | Low quality fuel--fill with the proper quality fuel. Refer to Engine Controls.