Engine noise - Smart Car of America Forums : Smart Car Forum

nemo1 · 10-19-2009, 10:48 AM

While warming up the engine for an oil change, I noticed a periodic noise, kind of a ratcheting sound. I looked and it seemed to happen in sync with a rotating part on the right side of the engine. This part is a small wheel with an arm attached to it that rotates back and forth. It possibly activates something that is causing the noise. Any help with what this is would be much appreciated. I would like to have some information before taking the car in (if necessary). If my description is lacking I can take a photo and post it. Thanks!

John_H · 10-19-2009, 10:55 AM

The photo would help for those of us who haven't spent time with their nose in the engine compartment. Or perhaps point to where it is on an illustration of the engine.

SmartTech · 10-19-2009, 11:25 AM

was the clicking thing where the belt was if so its the ac compressor, if not its the emissions valve.

nemo1 · 10-19-2009, 04:08 PM

Quote:

Originally Posted by John_H

The photo would help for those of us who haven't spent time with their nose in the engine compartment. Or perhaps point to where it is on an illustration of the engine.

Is there such a diagram available? I would love to learn more about the layout of the engine.

John_H · 10-19-2009, 04:13 PM

Page 30 of this manual appears to be a pretty decent cutaway from one angle. Other info in the manual is helpful as well.

nemo1 · 10-19-2009, 05:50 PM

Thanks for the link. I think I may have a problem with the cooling system as the reading I get from my scanguage has begun to swing widely. Having the manual really helps.

mvaldes · 10-19-2009, 07:20 PM

Quote:

Originally Posted by nemo1

Thanks for the link. I think I may have a problem with the cooling system as the reading I get from my scanguage has begun to swing widely. Having the manual really helps.

What reading would that be? (Just interested and curious.

)

jetfuel · 10-19-2009, 07:26 PM

Quote:

Originally Posted by mvaldes

What reading would that be? (Just interested and curious.

)

+1

jetfuel...curious and interested

Brabus007 · 10-19-2009, 07:27 PM

Quote:

Originally Posted by John_H

Page 30 of this manual appears to be a pretty decent cutaway from one angle. Other info in the manual is helpful as well.

Nice PDF John... I saved that 39 Meg file to my computer... I think I will put a copy on my Thumb Drive, so I have it with me on the road just in case...<:-))

John_H · 10-19-2009, 08:26 PM

The thanks goes to scp-parts.com for bringing it to us!