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Discussing Spark plug gap? in the 5.0 Mustangs Forum. I have a 306 with edelbrock performer heads what should i gap my plugs at? ... Modded Mustangs is the premier Ford Mustang Forum on the internet. We discuss all aspects of the Ford Mustang on the forum. Registered Users do not see the above ads. Please Register - It's Free! |
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February 10th, 2008, 09:49 AM
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#1 |
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Regular
1988 Mustang GT Hatch
Join Date: Sep 2007
Location: Queens,NY
Posts: 115
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Spark plug gap?
I have a 306 with edelbrock performer heads what should i gap my plugs at? Also i pulled one of my plugs and it looks kinda white what does that mean to rich or to lean?
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February 10th, 2008, 11:47 AM
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#2 |
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MM Fanatic
Join Date: Mar 2007
Location: Albertville, AL
Posts: 3,882
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to white means lean
black or suity is rich should just have a touch of brown look to it if mixture is right.
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2000 F250 CC 7.3 Powerstroke 4x4 Lariat "I'd rather be stroked than RAMMED" "Real Trucks" dont have spark plugs |
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February 10th, 2008, 11:49 AM
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#3 |
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Banned
1990 Mustang LX Turbo
9.71@141.6 mph
Join Date: Oct 2006
Location: NY
Posts: 8,780
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white is sometimes a bad head gasket to
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February 10th, 2008, 11:50 AM
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#4 |
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MM Fanatic
Join Date: Mar 2007
Location: Albertville, AL
Posts: 3,882
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true, if head gasket is suspected, do compression test and leakdown.
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2000 F250 CC 7.3 Powerstroke 4x4 Lariat "I'd rather be stroked than RAMMED" "Real Trucks" dont have spark plugs |
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February 10th, 2008, 01:12 PM
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#5 |
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Regular
Join Date: Dec 2007
Posts: 371
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what gap are the ones in your car at, i gap at .054 but im all stock. anyway if yours are less then that you can open it up some more and thatll help richen it some to
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'88 Mustang GT, Long Tube Headers, Off Road H-pipe, Flowmasters w/turn downs, K&N, Under Drive Pullies, Smog delete/Ac eliminator/72" belt, Subframe connectors, 3.73 Gears '93 LX 4-banger 78k miles |
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February 10th, 2008, 02:42 PM
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#6 |
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Newbie
Join Date: Sep 2007
Posts: 6
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The spark plug gap should be about .045" for a stock or mildly tuned normally aspirated street application.
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February 10th, 2008, 04:22 PM
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#7 |
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Regular
1988 Mustang GT Hatch
Join Date: Sep 2007
Location: Queens,NY
Posts: 115
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34 is stock right?
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February 10th, 2008, 05:52 PM
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#8 |
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Regular
Join Date: Dec 2007
Posts: 371
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k my manual and ford says gap from .052 to .054 for stock applications
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'88 Mustang GT, Long Tube Headers, Off Road H-pipe, Flowmasters w/turn downs, K&N, Under Drive Pullies, Smog delete/Ac eliminator/72" belt, Subframe connectors, 3.73 Gears '93 LX 4-banger 78k miles |
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February 10th, 2008, 10:56 PM
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#9 | |
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MM Fanatic
Join Date: Aug 2006
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Rotating The Earth 1320 Feet At A Time!! Today, I found out that when I masturbate at night while watching internet porn I cast a huge shadow on the curtain and the entire street is able to see it. 
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February 11th, 2008, 12:05 AM
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#10 |
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MM Fanatic
Join Date: May 2007
Location: Bloomington, IL
Posts: 4,331
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EFI motor plugs alway look white if you pull them after you putted around town or after the car has been idling.
They run like 15:1 at idle, which = white plug. If you want to know what your car is doing at WOT, do a WOT pass, kill the engine, and check the plugs directly after the pass. Not after the return road, but immediately after the WOT pass.
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88 GT CHI headed 351w 10.8 @ 125 - still figuring it out. 03 Cobra 2.3 whipple 10.7 @ 129 - sold it 04 Mach 1 12.7 @ 109 mostly stock - sold it 89 LX procharged 302 515 hp 497 ftlbs 10.7 @130 mph - sold it 
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