if this is an interference fit motor then the vlaves will bend or break. if not then not much. If you replace it get a kit, it should include a new tensioner, waterpump if belt driven and belt

Answered by hmac300 (expert)
17,749 answers provided

Thanks. Then, then my question should be what kind of engine my 1996 Holden Jackroo have? an interference fit moto or not? If it is, then I might need to replace timing belt now to avoid damage to engine due to timing belt failure, otherwise I can wait. And if my Jackroo's engine is not an interference fit motor, could you reply to my other question as well:"what kind of check can be done and how often as a precaution re possible coming timing belt failure so it can be replaced in time before timing belt failurs occure?" Thanks for your help.

Response from kaiyangkai
1 question asked

All Jackaroo engines with timing belts are Interference engines, you will do valve damage, replace belt if due, Belt due at 100,000Km intervals.

Answered by mhpautos (expert)
26,879 answers provided