BlackSunshine
Power Downshifter
Hey Guys,
So, I am hearing a strange (best as I can describe it) crackling noise after I had my Hot Rods installed. Some quick background. I recently installed some BBK LT's with a catted X-Pipe and Prothane poly motor mounts. NVH is obviously greatly increased but this noise is distinctly different and somewhat intermittent.
Basically, the best I can describe it is a crackling almost like metal expansion or sort of like the sound fire embers make when they pop. It seems to happen most when cruising at around 1500-1900 RPM but will also do it somewhat when I lift off and coast with the engine idling while moving.
It does not do it while just idling when stationary and will also not do it under load or WOT. Having a buddy sitting with me in the car he seems to think it sounds like it is coming from under the drivers side floor pan or just behind the dash area on the center to drivers side area.
This has got me completely stumped and a bit worried. Has anyone experienced this after a Hot Rod install? (For clarification it was not doing it after the LT install, only a day after the cams were put it). I've gone underneath and check for clearances on the LT's and everything looks good and I tightened up the collector bolts nice and tight.
Anyone have any ideas as to what this might be? Could it possibly be the chain guides/slack adjusters rattling around or maybe a loose cam cap? How about a blown cat? (went underneath and tapped the cats with a rubber mallet with no noise) Car drives fine and pulls hard all the way up and as mentioned above does not do it under real load or at WOT.
Any help or suggestions would be appreciated.
Cheers
Any ideas or suggestions
So, I am hearing a strange (best as I can describe it) crackling noise after I had my Hot Rods installed. Some quick background. I recently installed some BBK LT's with a catted X-Pipe and Prothane poly motor mounts. NVH is obviously greatly increased but this noise is distinctly different and somewhat intermittent.
Basically, the best I can describe it is a crackling almost like metal expansion or sort of like the sound fire embers make when they pop. It seems to happen most when cruising at around 1500-1900 RPM but will also do it somewhat when I lift off and coast with the engine idling while moving.
It does not do it while just idling when stationary and will also not do it under load or WOT. Having a buddy sitting with me in the car he seems to think it sounds like it is coming from under the drivers side floor pan or just behind the dash area on the center to drivers side area.
This has got me completely stumped and a bit worried. Has anyone experienced this after a Hot Rod install? (For clarification it was not doing it after the LT install, only a day after the cams were put it). I've gone underneath and check for clearances on the LT's and everything looks good and I tightened up the collector bolts nice and tight.
Anyone have any ideas as to what this might be? Could it possibly be the chain guides/slack adjusters rattling around or maybe a loose cam cap? How about a blown cat? (went underneath and tapped the cats with a rubber mallet with no noise) Car drives fine and pulls hard all the way up and as mentioned above does not do it under real load or at WOT.
Any help or suggestions would be appreciated.
Cheers
Any ideas or suggestions