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Author
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Topic: So do you think this would cause my car to be so slow?
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TheBrain
I'm the Real
John Force
Member # 35
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posted
 
 
Tonight, I took the JBA shorties and Bassani catted X-pipe off to install my Hooker Longtubes. I took the spark plugs out for clearance and noticed the #7 spark plug was black but the rest looked good. Upon closer inspection, the insulator is cracked ![[Eek!]](eek.gif)
The car never had a "dead" miss, but at times it would run MUCH better than others. I also noticed that the times it ran "not so good", I would have a vibration above 4000 rpm.
Didn't get to run it tonight 'cause I have to tow it to the muffler shop tomorrow to have the custom 3" x-pipe made
What do you think? did my car run a 12.5 @ 106 on 7 1/2 cylinders? I hope so !!!! ![[Big Grin]](biggrin.gif)
Brian
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1989 LX vert 342
11.662 @ 116.65 1.57 60ft. N/A
10.227 @ 134.59 1.41 60ft 200 shot 3600lbs
2003 Ranger 4 door
15.99 @ 87
Posts: 1264 | From: Back in Redding CA | Registered: Jul 2000
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66 AC COBRA
Nitrous King
Member # 904
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posted
that would explain why the new combo is slower than the old one
back to the track u go ![[burnout]](graemlins/burnout.gif)
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FFR AC Cobra
72 Vega - WCHRA Extreme 10.5
Posts: 6280 | From: Winters | Registered: Feb 2002
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TheBrain
I'm the Real
John Force
Member # 35
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posted
I hope that explains it, I put those plugs in when I installed the motor and haven't looked at them since. I bet I cracked it when I installed it 2 months ago
If I get the exhaust done tomorrow and the weather gods are kind, I will try to hit Sac on Wednesday
Brian
Posts: 1264 | From: Back in Redding CA | Registered: Jul 2000
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JoeT
¯
Member # 298
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posted
hope it's not P/V interference! ![[Whoo Whooooo!]](graemlins/woowoo.gif)
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1984 Ford Tempo AOD--- RIP
Posts: 6785 | From: San Jose | Registered: Jun 2001
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TheBrain
I'm the Real
John Force
Member # 35
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posted
quote:
Originally posted by shade-tree:
hope it's not P/V interference!
Nope, clayed the motor before I put in all together. I have close to .110 on the exhaust side and more than double that on the intake
Posts: 1264 | From: Back in Redding CA | Registered: Jul 2000
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BlackNGold
CaliforniaFords.com
Moderator
Member # 655
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posted
I'm always suprised how well a spark can jump, your plug still probably had some spark runnin through it....My car has run with a rough idle, with one of the plug wires totally dis-connected and it was still totally drivable!!...I think maybe you have 1mph with a new plug.....Hey, prove me wrong!!! ![[Wink]](wink.gif) ....Its gonna be hard to track prove if your plug was that bad if you put the 3" exhaust on...Oh well!..
Smoke a Chevy! ![[patriot]](graemlins/patriot.gif)
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-SLOWER TRAFFIC KEEP RIGHT-
Posts: 5132 | From: Bay Area, CA | Registered: Dec 2001
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Stimson
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Member # 51
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posted
I had the exact same thing happen to me, but it was the #3 cyl. It ran exactly how you describe. The #7 plug is a 5 minute swap... I guess we'll have to wait until this weekend to see if it fixes your MPH
Posts: 2373 | Registered: Jun 2000
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KCmustangboy
¯
Member # 1927
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posted
quote:
Originally posted by st5150:
I had the exact same thing happen to me, but it was the #3 cyl. It ran exactly how you describe. The #7 plug is a 5 minute swap... I guess we'll have to wait until this weekend to see if it fixes your MPH
Maybe not he said he might go out on wednesday night I am going for sure
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03 Cobra... Factory long block, with Whipple and AED tune... 812rwhp 10.0s @ 140... almost there!
WWW.AEDHP.COM
Posts: 1691 | From: San Jose, CA | Registered: Oct 2002
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93PONY
Mr. Valve Events
Member # 60
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posted
I'm gonna say no...that is probably not the cause.
Sorry Bud.
I crack my sparkplugs all the time. (it's a bitch to install plugs on this car) I've run on the dyno & at the track on cracked plugs.....& I had no problems. I replace them when I find them....no difference in performance.
Here's a test.
Pull off the intake spacers & run the car....no other mods. See what happens.
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www.advancedenginedevelopment.com
SCT dealer
Dynotuning
(916)715-7569
Posts: 4265 | From: Fair Oaks, CA | Registered: Nov 2000
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JoeT
¯
Member # 298
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posted
weird. a buddy of mine cracked a spark plug and he ended up having to re-ring that cylinder.
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1984 Ford Tempo AOD--- RIP
Posts: 6785 | From: San Jose | Registered: Jun 2001
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TheBrain
I'm the Real
John Force
Member # 35
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posted
quote:
Originally posted by 93PONY:
Here's a test.
Pull off the intake spacers & run the car....no other mods. See what happens.
![[Roll Eyes]](rolleyes.gif) Leave it alone already
I told you at the track that the reason I am running the spacer is due to the lack of clearance between my intake and valve cover for my nitrous solenoid.
Here's a deal for you, You buy me an externally polished Edelbrock RPM intake AND NOS Bigshot plate for it, I will take off my GT-40. Until then the GT-40 stays
![[BS flag]](graemlins/bs_flag.gif)
Posts: 1264 | From: Back in Redding CA | Registered: Jul 2000
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93PONY
Mr. Valve Events
Member # 60
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posted
quote:
Originally posted by TheBrain:
quote:
Originally posted by 93PONY:
Here's a test.
Pull off the intake spacers & run the car....no other mods. See what happens.
Leave it alone already
I told you at the track that the reason I am running the spacer is due to the lack of clearance between my intake and valve cover for my nitrous solenoid.
Here's a deal for you, You buy me an externally polished Edelbrock RPM intake AND NOS Bigshot plate for it, I will take off my GT-40. Until then the GT-40 stays
Check your PM's..
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www.advancedenginedevelopment.com
SCT dealer
Dynotuning
(916)715-7569
Posts: 4265 | From: Fair Oaks, CA | Registered: Nov 2000
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jmcclesk
Moderator
Member # 1355
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posted
I hope its the plug. I lost a plug wire at the track one day and the et went down 3/10's I hope it is the plug
[ May 06, 2003, 09:14 PM: Message edited by: jmcclesk ]
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Ford trained ASE master tech.
Posts: 4024 | From: marrysville | Registered: May 2002
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jmcclesk
Moderator
Member # 1355
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posted
Well have you run it yet???? ![[Confused]](confused.gif)
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Ford trained ASE master tech.
Posts: 4024 | From: marrysville | Registered: May 2002
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TheBrain
I'm the Real
John Force
Member # 35
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posted
quote:
Originally posted by jmcclesk:
Well have you run it yet????
Check your PM's
Posts: 1264 | From: Back in Redding CA | Registered: Jul 2000
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