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#1
02-18-2007, 05:20 PM
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What Is Wrong With It
when i rev the engine and it comes back down when it gets to about 1500 and then again at about 1000 it makes a wierd vibration/rattle but only at these speeds coming back down in rev. also sometimes when I rev it hard it will spray black liquid out the exhaust, not oil though is it just the condensation coming out with the cabon in the exhaust? pretty funny though my buddies white 98 camaro z28 always seems to be behind when it happens
 is it just that my car knows a piece of sh@t when it sees one?
__________________
Finally getting my swap done, Thought I would be relieved and satisfied, now I just wanna spend money on other car parts, WHERE DOES THE MADNESS END!!!! 
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#2
02-18-2007, 06:47 PM
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Re: What Is Wrong With It
Could be condensation and carbon..id still look at it, maybe do a compression test as well. And as for the vibration, you may have a broken or very worn out engine mount, check all 4, especially the rear. if you cant find any evidence of damage, mayeb the next place to look is the clutch assembly.
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Cheap, Fast, Reliable..Pick two  Current project: Rio Red 91 hatch. A6/Z6 build, Hondata S300, Tokico illumina/Ground Control. "I'd rather run 12's on steelies than 15's on rotas."
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#3
02-18-2007, 08:46 PM
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Re: What Is Wrong With It
Check the heat shield on your catalytic converter...
When they come unwelded, they tend to rattle about every 500rpm starting at 1000rpm... usually can't hear it above 1500-2000rpm until it gets worse because of the engine and exhaust noise... As for the black crap coming out... probably carbon and condensation build up.... nothing too uncommon.
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Honda Enthusiast
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#4
02-18-2007, 10:45 PM
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Re: What Is Wrong With It
no i have no heat shield, i took that loud bitch off, and i justput a stage 2 clutch and and si tranny n its all tight, it is something in the engine though.
__________________
Finally getting my swap done, Thought I would be relieved and satisfied, now I just wanna spend money on other car parts, WHERE DOES THE MADNESS END!!!!
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#5
02-18-2007, 11:25 PM
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Re: What Is Wrong With It
Quote:
Ah well... hard to tell what a sound is via text.
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Honda Enthusiast
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#6
02-19-2007, 08:07 PM
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Re: What Is Wrong With It
you might have the same problem I do ...
except mine only makes the sound when I'm accelerating and I've removed all of my heat shields from the exhaust manifold down 
__________________
91 CRX HF D16A6 Swap
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#7
02-20-2007, 03:36 PM
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Re: What Is Wrong With It
Black smoke could be running rich. The rear mount could very well be the culprit to your vibration problem. Even though you think it's tight it may be messed. I forget which member had this problem and finally sure enough that was what the problem was - rear mount. He had a light blue civic hatch and was from VA I think.
Anyway, I'd take that Z28 in a heartbeat!
__________________
2008 KIA Spectra5 SX 2010 Honda CR-V EX 
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