07-27-2018, 12:18 PM | #1 |
Senior Member
Join Date: May 2010
Location: East Hartford, Ct
Posts: 5,898
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Chasing noises
A number of years ago, as part of my power brake system I installed a (GM) power booster air filter.
Last fall, one day upon engine startup I noticed a muffled tapping noise coming from the general area of the floor hump, near the firewall. One thing I noticed was that when I applied the brakes the noise went away. Satified that it was not engine related, I continued to drive it while chasing possible rattles etc. Then I removed the booster filter and ran it that way. Success, the noise was gone and a new filter was installed, I cut the old filter apart and found that it was filled with round bead filter material that over time had fused together (from oil, gas etc.) to form a piston of sorts that accounted for the noise.
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07-27-2018, 12:43 PM | #2 |
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Join Date: May 2010
Location: Coral Springs FL
Posts: 10,944
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Re: Chasing noises
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