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Timing/oil pump chain


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Independent service options.If anyone knows of more please add them.The cam chain can be checked through the oil filler. Use a clean long screwdriver to check for slack on both sides, should be none. Don't put the screwdriver in with the engine on (doh!) but do use a length of hose to listen for the source. If it is a chain problem there would be a lot of noise coming from inside the oil filler hole. If it is an exhaust leak there won't be. The video does sound like it could be a simple external exhaust leak.

Thanks for the list of repair shops. I'm actually in Toronto, fairly central. All of these are at least an hour's drive. Would be great to find a place in the city. I've got a good guy for my old Volvo, just need the same option for my Smart.Will do the screwdriver and hose checks in the daylight tomorrow. Great ideas! Edited by inno
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Your cheapest option would probably be Glen (smart142) in London.Even if you have to tow it there.CANMAN

Are there less expensive ways to tow it to London from Toronto? I don't have a truck to tow a trailer. Edited by inno
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If you live near a truck stop you could talk to a trucker pulling a flatbed trailer.If he has room on the trailer he would probably let you put the smart on for cash.Or car haulers generally go back towards London / Windsor empty, or with empty spots.CANMAN

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I jacked the car up today to see what I could see from below. The sound is at least as loud under the car as it is top-side, near the oilcap. I also see what looks like an oil leak at the right side around the oil pan gasket. See photo.Could this be related at all, or just coincidence?Update: I drove the car today (usually my daughter drives it) and notice that the noise stopped once the engine warmed up. It sounded completely normal once I got going. When I stopped and restarted the warm engine there was no noise.So it is only when the engine is cold it seems. What does this mean?

post-2673-1326240300_thumb.jpg

Edited by inno
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I recently had the oil pump chain issue with my smart car. I took my car to my dad with documents showing how drop the engine and pull the timing case. He puuled it apart and found that the oil drive gear was totally stripped. He replaced the oil drive, chain and gears and the car is running perfectly. I can't believe how quiet it is now.

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I recently had the oil pump chain issue with my smart car. I took my car to my dad with documents showing how drop the engine and pull the timing case. He puuled it apart and found that the oil drive gear was totally stripped. He replaced the oil drive, chain and gears and the car is running perfectly. I can't believe how quiet it is now.

How many km on your car when this wore out?Where did you find the instructions for doing this? Was it a difficult job? How many hours did it take your dad?I think your dad could make some money fixing Smart cars! He must be a good mechanic.Thanks. Edited by inno
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You don't necessarily have to drop the engine, although it would probably make life easier.All the instructions you need are in this thread, go back to the beginning of the thread and read the entire thing.If the car is still drive able, get in it drive down to London, leave it with Glenn and take the bus home.CANMAN

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My smart had 134,000 km on it. When I took it to MB, they said it was $5K to change the oil pump and $7k for a rebuilt engine installed. My dad was a heavy duty mechanic and after looking at this forum and the papers that I got for changing the oil chain, he thought he would give it a try (at this point, the car didn't have any oil pressure). I don't know how many hours he put into, but I do know that he found the oil drive gear was totally stripped. He changed all of the gears, chain and the oil drive and also put a new front crankcase seal into also. Canman is right, you could do it without dropping the engine, but taking that he had to put some heat to the front pulley bolt, I am glad we dropped the engine.Here is a pic of the gear that was my problempost-10660-1326515878_thumb.jpg I have to say that I am pretty lucky to have a dad who is an awesome mechanic.

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Brutal, this is pretty bad, too bad the drive isn't a duplex chain, I guess the mass of a duplex chain would have been too heavy, considering all the other methods they used to keep engine mass low (like a hollow cam and roller bearing lifters).

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I just pointed him to the YouTube recording a member made of his failed chain tensioner. Alles klar? ;)

I have found that my noise completely disappears after about 3-5 minutes of driving, i.e when the engine temp goes to the first mark on the temp gauge.

Does this point toward oil tensioner or something else? I had my regular mechanic look at it and he could only confirm that it was not a belt rubbing noise (took off all the belts and it still made the noise, while cold).

I have contacted Glenn in London btw, thanks for that suggestion.

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I believe (not 100% sure) that the tensioners are entirely mechanical and not maintained by oil pressure. I am not sure why the noise you are referring to goes away when the engine is warm but I am guessing that it's not a tensioner.

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