In reference to the catalyctic, this is in Australia so the laws are probably different… I don’t see how it could have a catalyctic converter anyway because the car originally ran on leaded petrol and the previous owners had it tuned to run on leaded a little further on down the track.
Correct me if I’m wrong, but, doesn’t leaded petrol destroy catalytic converters??
Anyway, my old man came home from work and he asked around to see if anyone could shed some light on the problem. A mechanic told him that it could still possibly be the rings but I still find that doubtful since it’s not blowing any smoke.
My dad is really confused about this because if the valves were not sitting right or the seats were burnt out, the engine would be misfiring…The funny thing is, it’s running like a new swiss watch after the tune up… Other than the loose tappets which he adjusted on the weekend the only after visible problem with the engine is the backpressure and a little knocking due to the timing being too far advanced (which should be corrected soon)…
Would it be wise to leave it since it seems to be running fine or should we get to the bottom and have it all corrected??? What damage can this type of stuff cause?
The compression problem could of been there for quite some time, but, the backpressure problem has only come into play about a month ago due to my own stupidity…
[EMBARRASING STORY]
A month ago I drove from Sydney to canberra which is a long distance trip (the 2nd the cars had). It’s handed long distance fine before but on the way home there was a stretch on the federal hiway that was quite long and downhill. I decided to open it right up and 160km’s an hour later I eased back only to have the car shudder… This is what I think happened:
- At 160k’s an hour with the engine going so hard, backpressure obviously developed and about half the engine oil was sucked into the airfilter.
- It choked the carb temporarily which made it shudder (no air)
- …and ran super rich the whole way home…
My old man was NOT pleased… but, he was quite cordial about it later owing to the fact that he did some pretty stupid shit when he was a teenager too…
[END EMBARRASING STORY]
When I checked the engine oil at a service station, it was barely registering on the dipstick so I put in about 3 litres (4 litre sump). That actually overfilled it so the car didn’t lose as much as I thought it did. (mind you, the excess oil had come out the air intake and splattered everywhere and burnt onto the exhaust manifold)…
Obviously I did some damage to the engine during my moment of great stupidity and I was thinking along the lines that I may have glazed the bore or something?
Does this help shed any light??? Thankyou very much to the people who have given me suggestions, greatly appreciated! Feel free to verbally abuse me about my great ‘160k’s an hour’ I deserve it ! 