Burke
Junior Member
Okay so I need some help here identifying this sound that cropped up over the past week.
Started noticing it in the enclosed space of the garage right before I would pull out in the morning to go to work – at first I thought I was just hearing things. Finally realized I could hear it coming from underneath the car (a rythmic 'tapping') stopped at a light next to another car, with the radio down I realized I could hear it ‘bouncing’ off their car.
When I got my first S197 at the end of 2004, and my brother and his wife got theirs, I learned that these 3 valves can be ‘noisy‘ and they have their own unique sound running with the hood up. Well to me, this sounds like that sound amplified – a light metallic ‘tapping’ or ‘tak-tak-tak-tak’.
The sound is there at idle (starts about 1 second after the engine turns over) and increases and decreases with the rpms.
Initially I thought it was from underneath the car as I said, because you can clearly hear it standing next to the car at idle. Last night I popped the hood while it was running in the garage and listened, comparing the passenger side to the drivers side – it is obviously coming from only the drivers side and back by the firewall (general location of the #8 cylinder I guess although its hard to hear exactly with the SC spinning.)
Only things changed on the car recently was the HT0 sparkplug install back around 4th of July.
This has been going on all week and the car has shown no signs of driving differently – power is the same, no stumbles, etc…. (which is why I ruled out the sparkplugs)
It’s obviously something I need to have looked at in a shop but I wanted to get people’s impressions and if they have had anything similar occur.
Below is a quick vid I took last night starting from under the car and then into the engine bay – you need to try and tune out the clatter from the Saleen in the engine bay but once you do, the sound (clicking) is evident. And in person it is definitely louder than it sounds on the video.
http://s66.photobucket.com/albums/h242/Burke0011/?action=view¤t=MVI_3255.flv
Started noticing it in the enclosed space of the garage right before I would pull out in the morning to go to work – at first I thought I was just hearing things. Finally realized I could hear it coming from underneath the car (a rythmic 'tapping') stopped at a light next to another car, with the radio down I realized I could hear it ‘bouncing’ off their car.
When I got my first S197 at the end of 2004, and my brother and his wife got theirs, I learned that these 3 valves can be ‘noisy‘ and they have their own unique sound running with the hood up. Well to me, this sounds like that sound amplified – a light metallic ‘tapping’ or ‘tak-tak-tak-tak’.
The sound is there at idle (starts about 1 second after the engine turns over) and increases and decreases with the rpms.
Initially I thought it was from underneath the car as I said, because you can clearly hear it standing next to the car at idle. Last night I popped the hood while it was running in the garage and listened, comparing the passenger side to the drivers side – it is obviously coming from only the drivers side and back by the firewall (general location of the #8 cylinder I guess although its hard to hear exactly with the SC spinning.)
Only things changed on the car recently was the HT0 sparkplug install back around 4th of July.
This has been going on all week and the car has shown no signs of driving differently – power is the same, no stumbles, etc…. (which is why I ruled out the sparkplugs)
It’s obviously something I need to have looked at in a shop but I wanted to get people’s impressions and if they have had anything similar occur.
Below is a quick vid I took last night starting from under the car and then into the engine bay – you need to try and tune out the clatter from the Saleen in the engine bay but once you do, the sound (clicking) is evident. And in person it is definitely louder than it sounds on the video.
http://s66.photobucket.com/albums/h242/Burke0011/?action=view¤t=MVI_3255.flv
