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04-02-2001, 03:03 PM
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#1 |
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Registered Member
Join Date: Aug 2000
Location: Wisconsin
Posts: 879
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odd sound after full exhaust install
i just install full mac exhaust..long tubes off road h and cat back..now with the stereo off the faster i go you can hear air...like air is being pushed into the inside of the car or something..dosent really sound like a leak...any ideas guys?? also when the engine is idleing you can hear a faint "ticking" sound?
------------------ '91 GT,91K,T-5,air silencer removed,racing clutch(previous owner put in so dont know what kind),K&N air filter,Aiwa deck,power acoustic amp,2 12" pianeers,Mac long tubes,Cat-back,off road H Future Mods:3.73's,Pro 5.0,Shifter knob,FMS 9mm wires,E303 cam,cobra intake |
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04-02-2001, 04:13 PM
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#2 |
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Procharged!
Join Date: May 1999
Location: Hanover, PA
Posts: 1,539
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Is the port for the air tube from the air pump on the off road H-pipe hooked up or plugged? Make sure it is or this is where your noise is coming from
------------------ Check Out My Site 91GT,Holley SysteMAX II Kit-Heads 2.02" x 1.60" port matched to a 1262,Anderson N-61,24#,76mm C&L,Full MAC exhaust 1-5/8" Long tubes,2-1/2" O.R H-Pipe,2 1/2" cat back, No A/C or PS or emissions, 12" K&N Filter,RNH PERFORMANCE Ram Air,Ron Davis Radiator,Full Suspension,S&W 8pt "X" brace,JAZ seats,3:73's,Welds..etc,4:30's and 31 splines coming very soon! |
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04-02-2001, 04:32 PM
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#3 |
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Guest
Posts: n/a
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does the sound vary with engine load (get louder when you give it more gas)?
------------------ '84 Mustang 5.0 T5, FMS aluminum radiator & 180* thermostat, 1 5/8 shortys/2.5" duals, '88 GT tail lights and wheels, Holley 4160 4 BBL, smog pump idler, now with hi-po collapsed lifters in #3 or #4  |
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04-03-2001, 01:07 AM
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#4 |
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Registered Member
Join Date: Jun 2000
Location: ventura,CA
Posts: 438
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It's an exhaust leak. Bog the engine a little, if the ticking gets worse it's an exhaust leak. Since Ford doesn't use exhaust gaskets everything must be aligned perfect.
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04-03-2001, 04:02 AM
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#5 |
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The Photoshop Guru
Join Date: Feb 2001
Location: Mecca, Indiana
Posts: 1,419
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If you did away with the smog pump and the tubing behind the heads check the holes on the back of the heads for leaks. Mine leaked after the install and it was pretty noticable.
If you left the smog stuff, check to be sure the header bolts are tight and check the smog hose running to the crossover. ------------------ ICQ# 42269241 Indiana Stangers Association Buy your parts here |
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04-03-2001, 04:29 PM
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#6 |
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Registered Member
Join Date: Aug 2000
Location: Wisconsin
Posts: 879
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i took the piping off the old h pipe and hooked it back up...and when i give it more gas the louder it gets
------------------ '91 GT,91K,T-5,air silencer removed,racing clutch(previous owner put in so dont know what kind),K&N air filter,Aiwa deck,power acoustic amp,2 12" pianeers,Mac long tubes,Cat-back,off road H Future Mods:3.73's,Pro 5.0,Shifter knob,FMS 9mm wires,E303 cam,cobra intake |
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