about 4 weeks ago i put in a 4-2-1 header on my 94 civic dx sedan. Ever since then after you start the car and give it some gas you can smell gas until the car warms up. I only smell it for a second after i start the car from inside of it but if your in the engine bay and make the engine rev i smell gas. Its not overpoewring but you can definatly tell its gas. Would my gasket be bad or something?

 

Maybe the aftermarket manifold/gasket is letting some of those gasses escape? What type of gasket did you use and did you torque everything down in sequence and to spec?

 

You may have a leaky donut gasket. Try tightening around there. Mine was the same way before. Re-Torque the bolts on the head as well.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by [civic &raquo;</TD></TR><TR><TD CLASS="quote">]You may have a leaky donut gasket. Try tightening around there. Mine was the same way before. Re-Torque the bolts on the head as well.</TD></TR></TABLE>

donut gasket??? is that the one between the engine and header? I was thinking maybe gasket because i used the same gasket that was with my stock header. Everything is tourqued down to spec thou.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Cypher0117 &raquo;</TD></TR><TR><TD CLASS="quote">

donut gasket??? is that the one between the engine and header? I was thinking maybe gasket because i used the same gasket that was with my stock header. Everything is tourqued down to spec thou.</TD></TR></TABLE>

the donut gasket is between the header and cat.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Cypher0117 &raquo;</TD></TR><TR><TD CLASS="quote">

donut gasket??? is that the one between the engine and header? I was thinking maybe gasket because i used the same gasket that was with my stock header. Everything is tourqued down to spec thou.</TD></TR></TABLE> thats your problem man. When you change ANYTHING that uses gaskets you MUST change the gaskets too. If not you will have a leak to where you can smell the gas and oxygen sensor might pick it up making the mixture too rich. Thats what happended to me except i didnt have a cat so i welded header into the pipe and had a leak and smelled same thing until I fixed the leak.

 

where do you buy new gaskets?

 

Any parts store or at honda

 

atpturbo.com

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 4DeepCivic &raquo;</TD></TR><TR><TD CLASS="quote">Any parts store or at honda</TD></TR></TABLE>exactly.