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Author
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Topic: smoking/gas smell in oil
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94cobra5.0
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Member # 9955
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Hey guys i just recently put sum gt40heads on my 94 cobra but now i see smke out my tail pipes n it dnt fade away i also get a strong smell of gasoline in my oil what can i do and what timing should i run my car in since its a 306ci if anybody can help lmk and if anybody does good side jobs and can fix my pro lem of my car at a reasonable price lmk im located in hayward thanks guys HELP PLZ ![[patriot]](graemlins/patriot.gif) ![[Big Grin]](biggrin.gif) ![[worship]](graemlins/worship.gif) ![[dance]](graemlins/dance.gif)
Posts: 152 | From: 510 | Registered: Apr 2010
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coupe5oh
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Member # 10411
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posted
quote:
Originally posted by 94cobra5.0:
Hey guys i just recently put sum gt40heads on my 94 cobra but now i see smke out my tail pipes n it dnt fade away i also get a strong smell of gasoline in my oil what can i do and what timing should i run my car in since its a 306ci if anybody can help lmk and if anybody does good side jobs and can fix my pro lem of my car at a reasonable price lmk im located in hayward thanks guys HELP PLZ
uh your car came stock with gt40 heads...why would you swap them out for the same heads?
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R.I.P Willie Guzman (5ltrsvt)
96 4.6- H/C/I 5.3 LS swap
95 5.0- SOLD
94 5.0- SOLD
Posts: 2288 | From: Hayward | Registered: Oct 2010
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NEIGHT
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Member # 8741
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posted
quote:
Originally posted by coupe5oh:
quote:
Originally posted by 94cobra5.0:
Hey guys i just recently put sum gt40heads on my 94 cobra but now i see smke out my tail pipes n it dnt fade away i also get a strong smell of gasoline in my oil what can i do and what timing should i run my car in since its a 306ci if anybody can help lmk and if anybody does good side jobs and can fix my pro lem of my car at a reasonable price lmk im located in hayward thanks guys HELP PLZ
uh your car came stock with gt40 heads...why would you swap them out for the same heads?
Maybe GT40X/Y?
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-Savage Habits-
1992 Summer Edition
1986 Hatch- catfish killer
1964 Impala hard top
Posts: 18533 | From: EA$T $IDE REDWOOD CITY | Registered: Nov 2008
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94cobra5.0
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Member # 9955
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posted
My car was bought as a roller i first had a stock 95gt motor then i bought a 306ci with no heads...
Posts: 152 | From: 510 | Registered: Apr 2010
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coupe5oh
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Member # 10411
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posted
quote:
Originally posted by 94cobra5.0:
My car was bought as a roller i first had a stock 95gt motor then i bought a 306ci with no heads...
should of said that in the OP
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R.I.P Willie Guzman (5ltrsvt)
96 4.6- H/C/I 5.3 LS swap
95 5.0- SOLD
94 5.0- SOLD
Posts: 2288 | From: Hayward | Registered: Oct 2010
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wilit
Mustang Messiah
Member # 3367
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posted
quote:
Originally posted by coupe5oh:
quote:
Originally posted by 94cobra5.0:
My car was bought as a roller i first had a stock 95gt motor then i bought a 306ci with no heads...
should of said that in the OP
Why? It has absolutely nothing to do with the problem.
quote:
Originally posted by 94cobra5.0:
Hey guys i just recently put sum gt40heads on my 94 cobra but now i see smke out my tail pipes n it dnt fade away i also get a strong smell of gasoline in my oil what can i do and what timing should i run my car in since its a 306ci if anybody can help lmk and if anybody does good side jobs and can fix my pro lem of my car at a reasonable price lmk im located in hayward thanks guys HELP PLZ
Are the heads rebuilt (valve job and new seals)? Is the 306 a fresh rebuild (new rings and/or pistons)?
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"If a man hasn't found something worth dying for, he isn't fit to live." - Martin Luther King Jr.
Posts: 4793 | From: 37.78514° North 122.40100° West | Registered: Oct 2003
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Venomousnotch
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Member # 8695
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Sounds like your fuel pressure regulator has a hole in the diaphragm allowing fuel to go through the vacuum hose..You should disconnect the vacuum line that goes from the fuel pressure regulator to the back of the upper intake while the car is running and check to see if you have fuel traveling through the vacuum hose and if fuel comes out you know that the regulator is your problem.The vacuum line allows fuel to travel from the regulator to the back of the upper intake manifold and into the oil..Good luck..
[ 2013-04-10, 10:15 PM: Message edited by: Venomousnotch ]
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🏁•2004 MUSTANG SVT COBRA•🏁
"WHEN THE WHINING STARTS,IT MEANS JUSTICE IS ABOUT TO BE SERVED"..
Posts: 7604 | From: *NORTHERN*KILLA4NIA* | Registered: Oct 2008
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94cobra5.0
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Member # 9955
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Yes has rebuilt heads n it is a fresh built 306 thanks for info WILI VERY HELPFULL.....
AT VENPMOISNOTCH thanks for feedback i will go ahead n check the regulator thanks guys very helpfull info
Posts: 152 | From: 510 | Registered: Apr 2010
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94cobra5.0
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Member # 9955
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Yes has rebuilt heads n it is a fresh built 306 thanks for info WILIZTVERY HELPFULL.....
AT VENPMOUSNOTCH thanks for feedback i will go ahead n check the regulator thanks guys very helpfull info
Posts: 152 | From: 510 | Registered: Apr 2010
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94cobra5.0
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Member # 9955
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I meant WILIT SORRY FOR ERROR
Posts: 152 | From: 510 | Registered: Apr 2010
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nasty93
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Member # 8935
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What intake you running?..some of the chinese made cobra intakes don't have a big enough oil baffle and suck oil thru pcv.
Posts: 464 | From: windsor ,ca | Registered: Feb 2009
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94cobra5.0
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Member # 9955
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Im running a holley systemax no pcv on that
Posts: 152 | From: 510 | Registered: Apr 2010
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norcalfiddy
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Member # 11207
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also timing would be no different with a 302 or 306.. its just .030 over.
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600HP 1996 7.3L powerstroke single cab short bed race truck
Posts: 3393 | From: Brentwood | Registered: Aug 2011
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68StangTAY
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Member # 11114
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My 308 had this problem like yesterday lol but it was my diaphragm had to replace that an problem solved especially if it has new rings
Posts: 416 | From: oakland | Registered: Jul 2011
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94cobra5.0
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Member # 9955
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So regulator should be change thanks 68stangtay
Posts: 152 | From: 510 | Registered: Apr 2010
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