fuel smell when idling

fc nut · 12-18-2008, 09:10 PM

the smell is coming from the pass side of the engine.i can't see any fuel leaks.i only smell it when it idles.i've read that engine fires are common,could it be the pulsation dampner?

djmtsu · 12-18-2008, 09:15 PM

Could be, replace it anyway. Who knows when it was last checked, much less replaced!!

Phoenix7 · 12-18-2008, 09:16 PM

check before replacing.....could be an injector.....could be a really rich exhaust.....could be a bunch of things....get under the hood and get back to us

fc nut · 12-18-2008, 09:23 PM

i've heard of a modification to remove the dampner and replace it with a banjo bolt,does this work?

rx7 FC TII · 12-18-2008, 09:27 PM

theres always been a huge debate on that. i think it really comes down to personal preference.

do some searching and you can find tons of info...if not on this forum then the "other" one will

fc nut · 12-18-2008, 09:31 PM

i was just on rx7club and someone talked about it might cause a uncontroled rich or lean mixture.

farberio · 12-18-2008, 10:13 PM

The banjo bolt is the shitty way of doing it, replace it correctly.

fc nut · 12-22-2008, 07:54 PM

i took a good look at my 7 and what i could see is the upper intake manifold gasket is leaking.it's too damn cold right now, so i'm going to take care of it this weekend.it's supposed to be warmer this weekend.

Fidelity101 · 12-22-2008, 08:32 PM

Do your eyes burn when you have the hood open with the car idling? stock exhaust manifold or recent manifold change? it sounds like you have an exhaust leak. If you cant find it, seafoam can help find it for you.

a leaking intake gasket could give messed up AFRs and confuse the electronics because air is bypassing the sensors so the readings will be false thus the engine runs odd.

My5ABaby · 12-22-2008, 09:40 PM

Quote:

Originally Posted by farberio

The banjo bolt is the shitty way of doing it, replace it correctly.

Eh, nothing wrong with the banjo bolt. I'd rather have a couple rich spots (assuming that's even true) then have my car catch fire.

fc nut · 12-22-2008, 10:17 PM

i do have a slight exhaust leak at the manifold gasket.i have to retap the hole this spring. i can see fuel deposits on the area where the intake gasket is leaking.

12-18-2008, 09:10 PM	#1
fc nut member Join Date: Jun 2008 Location: Lebanon,Ohio Posts: 282 Rep Power: 18	fuel smell when idling the smell is coming from the pass side of the engine.i can't see any fuel leaks.i only smell it when it idles.i've read that engine fires are common,could it be the pulsation dampner? __________________ leaving my carbon footprint....one start up at a time

12-18-2008, 09:15 PM	#2
djmtsu My minds tellin' me no... Join Date: Feb 2008 Location: Murfreesboro, TN Posts: 4,043 Rep Power: 22	Could be, replace it anyway. Who knows when it was last checked, much less replaced!! __________________ 1976 Mazda Cosmo RX-5 1976 Mazda Cosmo RX-5 2003 Toyota Tundra TRD 2015 Toyota 4Runner SR5

12-18-2008, 09:23 PM	#4
fc nut member Join Date: Jun 2008 Location: Lebanon,Ohio Posts: 282 Rep Power: 18	i've heard of a modification to remove the dampner and replace it with a banjo bolt,does this work? __________________ leaving my carbon footprint....one start up at a time

12-18-2008, 09:31 PM	#6
fc nut member Join Date: Jun 2008 Location: Lebanon,Ohio Posts: 282 Rep Power: 18	i was just on rx7club and someone talked about it might cause a uncontroled rich or lean mixture. __________________ leaving my carbon footprint....one start up at a time

12-22-2008, 07:54 PM	#8
fc nut member Join Date: Jun 2008 Location: Lebanon,Ohio Posts: 282 Rep Power: 18	i took a good look at my 7 and what i could see is the upper intake manifold gasket is leaking.it's too damn cold right now, so i'm going to take care of it this weekend.it's supposed to be warmer this weekend. __________________ leaving my carbon footprint....one start up at a time

12-18-2008, 09:27 PM	#5
rx7 FC TII Rotary Fanatic Join Date: Feb 2008 Location: hoover Posts: 161 Rep Power: 18	theres always been a huge debate on that. i think it really comes down to personal preference. do some searching and you can find tons of info...if not on this forum then the "other" one will

12-18-2008, 10:13 PM	#7
farberio Rotary Fan in Training Join Date: Mar 2008 Posts: 38 Rep Power: 0	The banjo bolt is the shitty way of doing it, replace it correctly.

12-22-2008, 08:32 PM	#9
Fidelity101 Reliable Source Join Date: Nov 2008 Location: Michigan/Illinois Posts: 336 Rep Power: 17	Do your eyes burn when you have the hood open with the car idling? stock exhaust manifold or recent manifold change? it sounds like you have an exhaust leak. If you cant find it, seafoam can help find it for you. a leaking intake gasket could give messed up AFRs and confuse the electronics because air is bypassing the sensors so the readings will be false thus the engine runs odd. __________________ My Rx-7 Vids

12-22-2008, 10:17 PM	#11
fc nut member Join Date: Jun 2008 Location: Lebanon,Ohio Posts: 282 Rep Power: 18	i do have a slight exhaust leak at the manifold gasket.i have to retap the hole this spring. i can see fuel deposits on the area where the intake gasket is leaking. __________________ leaving my carbon footprint....one start up at a time