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Re: Recent Purchase of '93 740i (archive)

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Posted by RLombardo on April 02, 2001 at 14:28:12:

In Reply to: Recent Purchase of '93 740i posted by Curtis Gordon on April 02, 2001 at 13:33:18:

Hi. It seems this board is fairly watched and responses come fast and furious. So I would like to pose some questions to which I am hoping to get some opinions on this car I recently purchanse. Hopefully, I don't offend anyone with my questions.

It's a 1993 740i BMW built in late '92. 111k miles on it. Purchased for ten thousand even. Engine sounds and runs strong, no audible noises, slight vibration when idling but the tach is rock steady at 500rpm. Everything is in working order. Previous owner (I think I am the third), had the extended 100,000 mile warrantee on it. No visible defects other than leather wear.

Ok now my questions, was the purchase price a good deal? Is the vibration something I should worry about? I read about the sulfer problems this model year has, and the vibration has me worried. It was a spur of the moment thing, so I didnt research prior to making the deal, and I was also all starry eyed. Who wouldn't want to own a BMW like this one? So any and *ALL* information would be greatly appreciated.

If you want to put your concerns to bed once and for all, you should get the car to your mechanic (prefarably a Bimmer mechanic who would know about this issue) and do the following:
1. See if you have the updated Alusil block. You will have to look at the serial numbers on the block to check. If you do, stop worrying--this is the updated block without the corrosion issue.
2. If you do not have the alusil block, the world will not end. Have your motor compression tested. At 111k, you will have some wear, but if you pass the compression test at this point then you might not worry about it too much and start to consider ways to get low sulfur fuel.
3. If your compression test comes out bad (i.e., any cylinder has more than 15% leakage I believe, but your mecahnic should know what is acceptable and what is not), then you can consider a rebuild or simply selling the car while you can and it still runs. It is all really a question of your tolerance for the nature of the problem. Good luck.

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