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| Thread ID: 90918 | 2008-06-20 03:26:00 | Oil use in a new car | AvonBill (11358) | PC World Chat |
| Post ID | Timestamp | Content | User | ||
| 680552 | 2008-09-11 04:29:00 | For those of you who remember the Triumph 2000, I heard of a person who had a new one which was using alot of oil. It turned out that a conrod had not been cleaned properly after being cast and a little piece was left on, which stuck out cms beyond the edge of the piston and scored the bore. :) That sounds like a shaggy dog story, even the best of British craftsmen couldn't miss that with all the machining operations after casting then engine assembly. More likely the piston circlip broke letting the pin slide out. |
PaulD (232) | ||
| 680553 | 2008-09-11 08:14:00 | That is factual. I was friendly with our loacal Triumph dealer(British Leyland.) at the time. And why aren't I friendly with him now ? he has since died. :) |
Trev (427) | ||
| 680554 | 2008-09-11 09:02:00 | Surely even the T 2K on a bad assembly day would have had genuine forged rods? Those other sort would have been cast out surely. | R2x1 (4628) | ||
| 680555 | 2008-09-11 09:43:00 | I have just received a little more detail from the owner. Toyota NZ is replacing the "scoured" block and pistons. I would suspect that was caused by over-fueling (running too rich, possibly caused by bad temp or O2 sensors, clogged air filter, blocked exhaust/'cat' etc), excess fuel washing the oil film off the bores, causing rapid wear :eek:. |
feersumendjinn (64) | ||
| 680556 | 2008-09-11 11:08:00 | Surely even the T 2K on a bad assembly day would have had genuine forged rods? Those other sort would have been cast out surely. Don't know. :) |
Trev (427) | ||
| 680557 | 2008-09-11 11:13:00 | And here is another one. 20 odd years ago a certain model of 6 cylinder air cooled aircraft piston engines were failing. The cause was found that a machinist who was doing some procedure to the bearings was ginding a little nick into each one so he new which ones he had machined, and it was these that were failing. :) |
Trev (427) | ||
| 680558 | 2008-09-12 16:25:00 | To cause all that "washing" damage to the engine, the fuel consumption would be so high that the owner wouldn't be in complaining about oil use but the gallons-per-mile and the black smoke. The CTS would default to -43ºC if it went bad; it would make the engine run rich. It would set a blinking CEL. A clogged air filter would never cause that. That's what the BMAP or MAF is for...a check-and-balances system. A blocked exhaust would not cause this and the cat would die from too much fuel..but AFTER the problem was going on for a while and the CEL had been on for a long long time. . A HO2S could never cause this to happen...it would not drive the ECM that far out of range trying to compensate for what it thought was an overly lean condition. It would cause the CEL to "blink" warning of a catastrophic cat-destroying failure. If I were the dealer and found that the CEL had been ON during this time, I'd deny the claim and tell the customer to go pound sand and they were on their own for abuse and negligence. Somehow I don't believe this happened. Nope..I bet somebody goofed in the cleanliness department at the engine plant. |
SurferJoe46 (51) | ||
| 680559 | 2008-09-12 20:59:00 | And here is another one. 20 odd years ago a certain model of 6 cylinder air cooled aircraft piston engines were failing. The cause was found that a machinist who was doing some procedure to the bearings was ginding a little nick into each one so he new which ones he had machined, and it was these that were failing. :) It seems incredible that any machinist involved with aircraft or high performance engines would do this. Small surface imperfections can lead to stress fractures and this has been known for far longer than 20 years. Engine parts are often polished to a mirror finish. |
PaulD (232) | ||
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