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Rattle from engine during a cold start.

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Old 03-26-2001, 06:54 PM
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When I start my 2001 S2k on cold mornings (35
Old 03-26-2001, 07:43 PM
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Has anyone actually had their car stall the first time they turn in on after a winter's night? Mine seems to hesitate on occasion. Is this normal?
Old 03-26-2001, 08:29 PM
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SkipX, I've had the same sound once or twice on my engine with the replacement short block. It absolutely freaked me out because it was so similar to the tap-tap-tap of the failing original short block. However, it went right away and I have not had it recur in the last month.

I don't think there's too much you can do except be sure you have in a full supply of oil, don't start the engine below zero deg F (unless you switch to 5W-40), and wait.

If you absolutely want, you could inspect the spark plugs for fouling or even better use a bore-o-scope to inspect the insides of the cylinders through the spark plug holes. I wouldn't bother unless the problem becomes more regular or fails to go away when the engine warms up.

It is NOT a normal sound. Log it. Log a concern with your dealer. Hope for the best. It is probably going to go away.

Barry
Old 03-27-2001, 03:34 AM
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Barry,

Thanks for the help with this issue. I have my service rep on the phone this moring to schedule a visit to the service dept. later this week.

-Ian
Old 03-27-2001, 02:34 PM
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I just returned from the dealer. This is a common and normal engine noise, when starting at temperatures below 32
Old 03-27-2001, 02:44 PM
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Originally posted by Barry WY Silver/Black '01
It is NOT a normal sound.
Oooops!

"Often wrong, but never in doubt."

I'm VERY GLAD that it is a normal sound.

Barry
Old 03-27-2001, 04:07 PM
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Lots of cars with chain driven overhead cams produce some noise when they first start up(ever own a newer Ford?).
It won't hurt anything and will go away in a few seconds. Since all other Hondas use quiet timing belts, most Honda owners arn't familiar with this type of noise.

Another source of start-up knocking is caused by the larger bearing clearances in the engine which are necessary for the extreme rpms this engine can achieve. These noises also will go away in a few seconds as the oil pressure builds up.

Moral of the story...take it easy on the thing til it warms up.
Old 03-27-2001, 08:54 PM
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SkipX - thanks for the info. I have the same noise when the engine RPMs drop to about 1500 during warm-up. It usually lasts about 20-30 seconds or so. Of couse, I was never able to reproduce it at the dealer because it disappears after warm-up (and I didn't feel compelled to leave the car overnight at the dealer's just for this issue). Anyway, nice to know that it does not appear to be anything to worry about.
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