AIR Restrictor mod on stock manifolds?
12-03-2001, 10:00 AM
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AIR Restrictor mod on stock manifolds? I have a ticking on the passenger side of my engine while its running and when I turn the car off it winds down to a slow tick before it finally shuts off. Is this the AIR system making the noise? Is this what the restrictor mod eliminates?
If its not the AIR, what could the ticking be?
TIA
RYan
If its not the AIR, what could the ticking be?
TIA
RYan
12-03-2001, 01:06 PM
#3
Re: AIR Restrictor mod on stock manifolds? On my car the sound was more like a leaking header sound. it wasn't noticable untill you got to about 2000 rpm and certainly didn't continue when the engine was shut down. doesn't sound the same to me.
You can pull the AIR valve and look at it. They get kinda burnt from the header tick.
You can pull the AIR valve and look at it. They get kinda burnt from the header tick.
12-03-2001, 03:14 PM
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Re: AIR Restrictor mod on stock manifolds? Thanks ragtop. This was a day or two ago so Ill double check, but I definately remember the ticking continuing after the car was shut off. And it doesnt sound like an exhaust leak, its a pretty distinct ticking.
Also, I tried raising the idle via the idle stop screw and i reasied a bit but surges much worse. additionally, it will wind down to about 1200 while slowing at a stoplight and then kick down to idle speed and start surging. Im going to work on that toady, but maybe someone has a solution.
TIA
Ryan
Also, I tried raising the idle via the idle stop screw and i reasied a bit but surges much worse. additionally, it will wind down to about 1200 while slowing at a stoplight and then kick down to idle speed and start surging. Im going to work on that toady, but maybe someone has a solution.
TIA
Ryan
12-03-2001, 05:53 PM
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Re: AIR Restrictor mod on stock manifolds? [quote]Originally posted by Pro Stock John:
<strong>Could be the air pumps. Or the evap thing.</strong><hr></blockquote>
uh....huh? it seems to come from the passenger side more but it may be from both. Ill play with it tomorrow. Any ideads???
Ryan
<strong>Could be the air pumps. Or the evap thing.</strong><hr></blockquote>
uh....huh? it seems to come from the passenger side more but it may be from both. Ill play with it tomorrow. Any ideads???
Ryan
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12-03-2001, 06:07 PM
#8
Re: AIR Restrictor mod on stock manifolds? Your exhaust manifolds have a one way check valve for the air tube. This keeps hot exhaust from going into the air tube. When they fail (been there), it makes a familiar ticking noise that sounds like a header leak. Check these. They're easy to replace.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
Custom LSX tuning in person or via email press here.
