Running insanely rich. JDM D15B
Thread Starter
Honda-Tech Member
Joined: Apr 2006
Posts: 1,543
Likes: 0
From: Yer boat be mine ARR
Running insanely rich. JDM D15B
So I have a 1994 CX Hatch with a OBDI D15B. I did search but when I tried to bump old topics no-one answered my questions.
The problem is as it follows. I start the car and I can distinctly smell gasoline from the tailpipe. Raw unburned gas. There are no codes and I jump the connectors just in case, nothing. Also, when on high rpms, there is a black smoke out the tailpipe.
Question. I did my own timing belt and all my work. I burnt a valve a while back on nitrous and rebuilt the head as well so I did all of it.
Q? Could my timing being off cause this gas smell and the high rpm problem?
Q2? When I connected the nitrous I had the fuel line split. Would the high pressure from the nitrous cause a faulty FPR and this way causing the shitty mileage and extra gas thrown in the engine.
The plugs seem fine, I had a turbo GSR so I can read them just fine.
I got 30 mpg on a recent trip, maybe 4 days ago. However I get maybe high teens in city driving and both are way below the gas mileage it should be getting.
The problem is as it follows. I start the car and I can distinctly smell gasoline from the tailpipe. Raw unburned gas. There are no codes and I jump the connectors just in case, nothing. Also, when on high rpms, there is a black smoke out the tailpipe.
Question. I did my own timing belt and all my work. I burnt a valve a while back on nitrous and rebuilt the head as well so I did all of it.
Q? Could my timing being off cause this gas smell and the high rpm problem?
Q2? When I connected the nitrous I had the fuel line split. Would the high pressure from the nitrous cause a faulty FPR and this way causing the shitty mileage and extra gas thrown in the engine.
The plugs seem fine, I had a turbo GSR so I can read them just fine.
I got 30 mpg on a recent trip, maybe 4 days ago. However I get maybe high teens in city driving and both are way below the gas mileage it should be getting.
Honda-Tech Member
Joined: Apr 2008
Posts: 243
Likes: 0
From: Naperville/Chicago, Ill
Re: (leoaa777)
Really sounds like a valve is blown. However seeing as no one is perfect and you did your own timing adjustment, i would look into that, too much overlap can cause injected fuel to escape out the exhaust valve. Any backfiring?
Honda-Tech Member
Joined: Apr 2008
Posts: 151
Likes: 1
Re: Running insanely rich. JDM D15B (leoaa777)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by leoaa777 »</TD></TR><TR><TD CLASS="quote">So I have a 1994 CX Hatch with a OBDI D15B. I did search but when I tried to bump old topics no-one answered my questions.
The problem is as it follows. I start the car and I can distinctly smell gasoline from the tailpipe. Raw unburned gas. There are no codes and I jump the connectors just in case, nothing. Also, when on high rpms, there is a black smoke out the tailpipe.
Question. I did my own timing belt and all my work. I burnt a valve a while back on nitrous and rebuilt the head as well so I did all of it.
Q? Could my timing being off cause this gas smell and the high rpm problem?
Q2? When I connected the nitrous I had the fuel line split. Would the high pressure from the nitrous cause a faulty FPR and this way causing the shitty mileage and extra gas thrown in the engine.
The plugs seem fine, I had a turbo GSR so I can read them just fine.
I got 30 mpg on a recent trip, maybe 4 days ago. However I get maybe high teens in city driving and both are way below the gas mileage it should be getting. </TD></TR></TABLE>
Have you checked the fuel pressure?
The problem is as it follows. I start the car and I can distinctly smell gasoline from the tailpipe. Raw unburned gas. There are no codes and I jump the connectors just in case, nothing. Also, when on high rpms, there is a black smoke out the tailpipe.
Question. I did my own timing belt and all my work. I burnt a valve a while back on nitrous and rebuilt the head as well so I did all of it.
Q? Could my timing being off cause this gas smell and the high rpm problem?
Q2? When I connected the nitrous I had the fuel line split. Would the high pressure from the nitrous cause a faulty FPR and this way causing the shitty mileage and extra gas thrown in the engine.
The plugs seem fine, I had a turbo GSR so I can read them just fine.
I got 30 mpg on a recent trip, maybe 4 days ago. However I get maybe high teens in city driving and both are way below the gas mileage it should be getting.
</TD></TR></TABLE>Have you checked the fuel pressure?
Trending Topics
Honda-Tech Member
Joined: Jan 2003
Posts: 3,156
Likes: 0
From: can't find parking in baltimore
Re: Running insanely rich. JDM D15B (leoaa777)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by leoaa777 »</TD></TR><TR><TD CLASS="quote">So I have a 1994 CX Hatch with a OBDI D15B. I did search but when I tried to bump old topics no-one answered my questions.
The problem is as it follows. I start the car and I can distinctly smell gasoline from the tailpipe. Raw unburned gas. There are no codes and I jump the connectors just in case, nothing. Also, when on high rpms, there is a black smoke out the tailpipe.
Question. I did my own timing belt and all my work. I burnt a valve a while back on nitrous and rebuilt the head as well so I did all of it.
Q? Could my timing being off cause this gas smell and the high rpm problem?
Q2? When I connected the nitrous I had the fuel line split. Would the high pressure from the nitrous cause a faulty FPR and this way causing the shitty mileage and extra gas thrown in the engine.
The plugs seem fine, I had a turbo GSR so I can read them just fine.
I got 30 mpg on a recent trip, maybe 4 days ago. However I get maybe high teens in city driving and both are way below the gas mileage it should be getting. </TD></TR></TABLE>
guarantee it backfired into the intake manifold and cooked your intake air temp sensor. as this is the only sensor that has the power to make your car run unreason ably out of tune. and i've seen it happen so many times before.
replace that lil white sensor on the manifold and it should fix it. i bet it looks nasty when you take it out.
The problem is as it follows. I start the car and I can distinctly smell gasoline from the tailpipe. Raw unburned gas. There are no codes and I jump the connectors just in case, nothing. Also, when on high rpms, there is a black smoke out the tailpipe.
Question. I did my own timing belt and all my work. I burnt a valve a while back on nitrous and rebuilt the head as well so I did all of it.
Q? Could my timing being off cause this gas smell and the high rpm problem?
Q2? When I connected the nitrous I had the fuel line split. Would the high pressure from the nitrous cause a faulty FPR and this way causing the shitty mileage and extra gas thrown in the engine.
The plugs seem fine, I had a turbo GSR so I can read them just fine.
I got 30 mpg on a recent trip, maybe 4 days ago. However I get maybe high teens in city driving and both are way below the gas mileage it should be getting.
</TD></TR></TABLE>guarantee it backfired into the intake manifold and cooked your intake air temp sensor. as this is the only sensor that has the power to make your car run unreason ably out of tune. and i've seen it happen so many times before.
replace that lil white sensor on the manifold and it should fix it. i bet it looks nasty when you take it out.
Honda-Tech Member
Joined: Jan 2003
Posts: 3,156
Likes: 0
From: can't find parking in baltimore
Re: Running insanely rich. JDM D15B (wonder squirrel)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by wonder squirrel »</TD></TR><TR><TD CLASS="quote">Grab a multimeter and test the sensor. No sense in throwing money at it blindly.</TD></TR></TABLE>
true
but if it looks like over-cooked hot dog, its usually a good indicator
true
but if it looks like over-cooked hot dog, its usually a good indicator
Thread Starter
Honda-Tech Member
Joined: Apr 2006
Posts: 1,543
Likes: 0
From: Yer boat be mine ARR
Re: Running insanely rich. JDM D15B (wonder squirrel)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MonkeyMagic »</TD></TR><TR><TD CLASS="quote">
true
but if it looks like over-cooked hot dog, its usually a good indicator
</TD></TR></TABLE>
Ill check that as soon as possible. I just got to find my multimeter.
true
but if it looks like over-cooked hot dog, its usually a good indicator
</TD></TR></TABLE>
Ill check that as soon as possible. I just got to find my multimeter.
Thread Starter
Honda-Tech Member
Joined: Apr 2006
Posts: 1,543
Likes: 0
From: Yer boat be mine ARR
Re: Running insanely rich. JDM D15B (wonder squirrel)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MonkeyMagic »</TD></TR><TR><TD CLASS="quote">
guarantee it backfired into the intake manifold and cooked your intake air temp sensor. as this is the only sensor that has the power to make your car run unreason ably out of tune. and i've seen it happen so many times before.
replace that lil white sensor on the manifold and it should fix it. i bet it looks nasty when you take it out.
</TD></TR></TABLE>
But wouldnt a sensor like that throw a code? I am not getting any CEL
guarantee it backfired into the intake manifold and cooked your intake air temp sensor. as this is the only sensor that has the power to make your car run unreason ably out of tune. and i've seen it happen so many times before.
replace that lil white sensor on the manifold and it should fix it. i bet it looks nasty when you take it out.
</TD></TR></TABLE>
But wouldnt a sensor like that throw a code? I am not getting any CEL
Thread
Thread Starter
Forum
Replies
Last Post
venomzz
Honda Civic / Del Sol (1992 - 2000)
28
Dec 14, 2007 05:44 AM
XxJDMugenCivicxX
Honda CRX / EF Civic (1988 - 1991)
29
Feb 14, 2007 06:25 PM
