QuestionI have a high mileage 91 Toyota Celica ST 1.6 (270000) – Car runs perfectly except for oil smoke at start-up. I assumed valve seals so I replaced them. After starting the car, all was quiet, after running for awhile (15min) it sounds like the followers have all collapsed. Since this car uses shims I wasn't sure if the followers were even hydraulic.
Things that I'm sure of: Oil pressure good, followers were kept in order and put back in same location, shims are present, plenty of oil in top end after running, follower bores were not nicked or scarred during process.
If the followers are hydraulic is there a bleeding procedure?
Any ideas?
AnswerThe valve lifters are not hydraulic.
There are a few possible explanations for this noise, this engine uses two camshafts, one for the intake valves and one for the exhaust, the intake camshaft gear is of a two piece design to limit gear noise, it is spring loaded, before removing the cam did you put in a set bolt in the gear to lock the two gears together?
If not you will have to remove the cam and move the spring loaded gear until the two holes line up and then install the 10mm bolt to lock the gears together and reinstall the cam. Once installed the service bolt must be removed. Let me know if this is the case and, if I can have an email address, I can probably send you an illustration and instructions how to reassemble it properly.
