christianmg Posted November 11, 2011 Posted November 11, 2011 ah was gonna try and do a play on the beach boys song here, but thought it would be waisted! has anyone else experienced "bad" vibrations when idling, especially when starting the engine from cold, but its increasingly becoming all the time now, like just at the traffic lights. It sounds like a vibration coming from the back box exhaust general area? As soon as I accelerate or even rev it goes away, but take the foot off the gas and it comes back. Its quite fast and loud enough to notice with the radio volume at 12. I know its probably nothing major, but its really taking the fun out of the car, and Im worried if I take it to a stealership they'll prob try and flog me a new suspension or back box? Any thoughts guys?? Quote
Zugara Posted November 11, 2011 Posted November 11, 2011 why not get under the car and wiggle the back box around to see if that is the problem Could be the exhaust is cracked on the weld into the back box, worth have a peep see mate. Quote
Zugara Posted November 11, 2011 Posted November 11, 2011 Take a video and post it up mate, could be a broken pipe, exhaust baffles, check the cat heat shields are not rotten away and resting on one of the cats. Quote
christianmg Posted November 11, 2011 Author Posted November 11, 2011 http://dl.dropbox.com/u/4814189/IMG_4745.MOV Ok its not the best movie ever but hopefully can give you an idea! It wasnt vibrating that bad tonight, but I know if I took it as far as the traffic lights it would start to go bananas! Its just its pouring out! There was a problem with it about 2 months ago, and when I got the mechanic to look at it, the heat shield had rusted away 2 of the 4 bolts so he said that cause the car isnt used for racing or anything, he could remove it and it wouldnt affect the car. This was a nissan guy too. Does that sound right? Just incase you notice the lack of heat shield in the video Quote
Zugara Posted November 11, 2011 Posted November 11, 2011 Thats ok, but you would feel more heat under your feet if they are/were removed. The vid don't work not a hyperlink. This sounds like the shield is causing the noise... http://dl.dropbox.com/u/4814189/IMG_4745.MOV Ok its not the best movie ever but hopefully can give you an idea! It wasnt vibrating that bad tonight, but I know if I took it as far as the traffic lights it would start to go bananas! Its just its pouring out! There was a problem with it about 2 months ago, and when I got the mechanic to look at it, the heat shield had rusted away 2 of the 4 bolts so he said that cause the car isnt used for racing or anything, he could remove it and it wouldnt affect the car. This was a nissan guy too. Does that sound right? Just incase you notice the lack of heat shield in the video Quote
stubzie83 Posted November 11, 2011 Posted November 11, 2011 The video link hasn't worked that well, but from copying and pasting the link I was able to view it. Looks like you might have a leak at the flange joint between the mid pipe and back box. I only say this as you can see water leaking from the joint as you pass it with the camera and everything else underneath is dry. Quote
christianmg Posted November 11, 2011 Author Posted November 11, 2011 agh @*!#! so its a take it to the garage job then? Quote
Zugara Posted November 11, 2011 Posted November 11, 2011 No Buy a second hand one and fit it yourself mate, save yourself ££££££s that way, its only a couple of nuts and hour or so of your time. don't be afraid.... agh @*!#! so its a take it to the garage job then? Quote
stubzie83 Posted November 11, 2011 Posted November 11, 2011 I would check the joint again just to verify that is the cause. Looks like the leak is in the joint itself between the two flanges rather than the weld breaking off either side of the flange. Might just need a new gasket in the joint to stop the leak. Quote
christianmg Posted November 11, 2011 Author Posted November 11, 2011 thanks sorry for the increadble noob question but do you think that would cause the vibrating sound?? Quote
stubzie83 Posted November 12, 2011 Posted November 12, 2011 It's highly likely. It does sound like it is some part of the exhaust rattling in the vid. Even if it isn't the leaking joint this still needs to be sorted out as if it is leaking water then it will be leaking gases as well. Quote
Maccaman Posted November 12, 2011 Posted November 12, 2011 Just take it to one of the tyre/exhaust places and they will check it for free. Quote
nzr350z Posted November 12, 2011 Posted November 12, 2011 If you do require a replacement backbox pm me,i have a repaired one available. Quote
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