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Anarchist Extremist
Join Date: Nov 2005
Location: Vermont
Posts: 419
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Wont idle on warm up, Arrgh
'80 SC stock except for 964 cams and backdate with sport muffler.
Car will not idle at warm up. New Warm up regulator. Working AAR. What else should I be looking for? Chris
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80 SC Coupe 00 Tundra (Tow Rig) 00 Audi A6 Avant (wifes rig) 03 Wife ('71 typ Spezial) 05 Kid (MENSA prototype) |
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04-27-2008, 04:51 AM
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Designer King
Join Date: Mar 2004
Location: Toronto, ON Canada
Posts: 5,499
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Does it immediately stop after starting?
Does it pop and bang @ a low rev right after starting? Have you checked the ccp? The mixture? Air leaks? You may have to richen the mix because of the new muffler.
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Paul Yellow 77 Sunroof Coupe/cork interior; 3.2L SS '80 engine/10.3:1/No O2; Carrera Tensioners; 11 Blade Fan; Turbo tie rods; Bilstein B6; 28 tube Cooler; SSI, Dansk; MSD/Blaster; 16x7" Fuchs/205/50 Firestone Firehawk Indy 500s; PCA/UCR, MID9 Never leave well enough alone |
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04-27-2008, 08:01 AM
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Anarchist Extremist
Join Date: Nov 2005
Location: Vermont
Posts: 419
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Quote:
Some poping but not a lot. I did a check for leaks (with a smoker) and none were found, I might try it again. Still need to check Control pressures. Noah is lending me a Co sniffer this week. after we meet up I will know more. Thanks Chris
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80 SC Coupe 00 Tundra (Tow Rig) 00 Audi A6 Avant (wifes rig) 03 Wife ('71 typ Spezial) 05 Kid (MENSA prototype) |
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04-27-2008, 04:43 PM
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Registered
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Please elaborate......
Quote:
Could you please elaborate your leak test (with a smoker)? It caught my curiousity and interested to know about it. Thanks. Tony |
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04-27-2008, 06:33 PM
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Anarchist Extremist
Join Date: Nov 2005
Location: Vermont
Posts: 419
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Well, a smoker is a tool that is made by Snap-On, it is just that, a smoker. It is hooked up to 12Volts and pressurized air and it makes smoke, you find a spot to hook it up (I used the pop-off valve opening) then take off the boot and seal it so smoke cant come back through the intake plenum. When I turn it on it puts a lightly pressurized "smoke" into the injection system, this includes everything that comes and goes from the air side of the injection system. if there are leaks this will eventually find it, becusae a leak will be the easiest way out.
Chris
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80 SC Coupe 00 Tundra (Tow Rig) 00 Audi A6 Avant (wifes rig) 03 Wife ('71 typ Spezial) 05 Kid (MENSA prototype) |
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04-28-2008, 03:57 AM
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Designer King
Join Date: Mar 2004
Location: Toronto, ON Canada
Posts: 5,499
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When you get it warmed up, how does it idle? At what speed?
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Paul Yellow 77 Sunroof Coupe/cork interior; 3.2L SS '80 engine/10.3:1/No O2; Carrera Tensioners; 11 Blade Fan; Turbo tie rods; Bilstein B6; 28 tube Cooler; SSI, Dansk; MSD/Blaster; 16x7" Fuchs/205/50 Firestone Firehawk Indy 500s; PCA/UCR, MID9 Never leave well enough alone |
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04-28-2008, 05:17 AM
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Somatic Negative Optimist
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With a vacuum leak, the idle will be rough even when hot.
Is the idle smooth after the engine is warmed up? Sounds more like an issue between WUR (Cold Control Pressure) - AAR - AAV.
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1980 Carrerarized SC with SS 3.2, LSD & Extras. SOLD! 1995 seafoam-green 993 C2, LSD, Sport seats.  Abstract Darwin Ipso Facto: "Life is evolutionary random and has no meaning as evidenced by 7 Billion paranoid talking monkeys with super-inflated egos and matching vanity worshipping illusionary Gods and Saviors ". 
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04-28-2008, 08:12 AM
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