When i bought the 1.3 nova sr engine it had a core plug missing and no timing belt. easy enough to replace and all went fine for a while, untill the car started coughing spluttering and grinding to a halt i couldnt even get pass busses on the motor way. the problem is intermittent and usually happens after pulling high gears after a cold start. My mechanic friend had the same problem with his, missing core plug after a freeze but he thinks there may be a crack in the block or head as a result of the freeze. he described the same symptoms as i did. Now has anybody else with a nova had the same prob, as i undersatnd they built a few of these cars so the chances are it may be a common fault, but i would rather it be a loose wire cause i just rebulit the bloody engine. Advice would be good thank u in advance