Ive checked All the lines... Feed and Return.. cant seem to Find a leek.
Checked Exhaust Seals.. found no problem.
Checked the Air Pump Inlet on the Pipe as well.. nothing...
What Could Cause this to O cure?

 

Thats not gas smell thats the newest fragrance called "Rotary". FC's are known for having a gas smell...but if you take out the CAT expect it to increase...I have no CAT and my gas cap/lid is shaved so....my vented gas cap vents into my trunk (vert) and my car smells like gas to high hell! Four foot flames are worth it!

 

well.. ive had this rx for a long wile now.. it just started being Noticed.. I dont have a cat. its pretty much a Strait pipe system with a glass pack to Null out the volume a bit.. cops still pull me over for it.. But o well.

so its safe?

 

NO....if you just started to notice it..hell no..dont run the risk of an engine fire.

READ THIS! https://www.rx7club.com/2nd-gen-archive-72/pulsation-damper-failure-victims-read-60160/

 

If it's an s4, CHECK YOUR PULSATION DAMPER. It is at the end of the primary fuel rail, towards the front of the car. It has a diaphragm on the inside to absorb pulses in the fuel flow, and when it fails, the diaphragm tears and drips fuel onto the hot motor, causing a fire.

 

Then what Els Do i need to check?

 

READ THIS!-

https://www.rx7club.com/showthread.php?t=60160

 

Definitely check the PD, like Ted and 88 just mentioned. May want to check the charcoal canister as well. It absorbs your fuel tank vent odors, and I have heard they can become ineffective over time.

 

Anyone have a Pic of what im looking for... I see the one on Mazdatrix But I cant seem to locate it......

 

If you have a S4 its under your upper intake connected to your fuel rail...its not easy to get to...could take you a few hours labor if you have never ripped one apart before...its a little yellowed plastic cap ..inside is a screw...it falls off..dont just tighten it back..replace it!

 

When looking at the front of the engine, look between the alternator and the water-filler neck on the water pump housing. Now look under the upper intake manifold. You will see the PD either with or without the yellow plastic cap. It looks just like the fuel pressure regulator (FPR) on the front end of the secondary fuel rail, but it has no vacuum line.

 

It looks like this but on the end of your fuel rail.

 

Here we go! Top pic ...yellow cap!

 

Yeah....... I think.. By looking at it.. ive detected Dry Gas Residue on the Line behind it...
tell me what you think

 

That **** looks old. I wouldn't drive that car until it was replaced or fully inspected! Replace with and s5 PD $$$ or I've read of some kind of trick you can do for the s4 PD.

 

Also Check Under the Uim.. I had leaks there a few times.. the heat Cooks those fuel lines Sitting Right over the engine! Its hard to see under the uim need to look from many angles

 

Banjo bolt modification-

http://www.rotaryresurrection.com/2n..._dampener.html


If you can't find the cause of the smell I would pull of the upper intake manifold.
Replace all of your fuel hoses and vacuum lines while your in there as well as do the banjo bolt modification to your fuel rail.


Do you still have the emissions equipment installed?
If not what about your charcoal canister?

If nothing, then what did you do about your vent line coming from the tank that is against the firewall on the drivers side of the engine bay? I've noticed a strong fuel smell to come from that vent line when I removed all of the emissions equipment.



Any leaks down by the fuel filter?



Does your gascap make a "whoosh" sound when you unscrew it?
If not you could have a leak somewhere in the vacuum lines from the tank or the top lid of the tank or even your gas cap is defective and not holding a vacuum in the tank and the smell could be coming from there as well.

Pull up your rear carpet and remove the silver cover plate which will reveal your fuel tank. You will see 2 fuel lines and a vent line if I remember correctly. Possibly one of those lines is leaking.

 

If ive ran the fuel down a bit an go to Fill it.. Yes it makes a Pressurized noise. I checked the rear lines last night wile looking over the PD.

>< it sucks i gotta risk Driving it to work an back...
its the only car ive got.... which is my bad <.<

 

All FC drivers carry a fire extinguisher right??? I do.. a really small one fits in any of the compartments.

 

Ahaahaha, yeah I got one for my 88 because the wiring was pretty sketchy.

 

Pop open that upper intake manifold, I have a leaking pulsation dampner on my S5 Vert at the moment that I am trying to figure out what I am going to do with. Once you take the UIM off, pressurize the system using the yellow plug on the passenger side strut tower (jump the connectors with a wire and make sure to plug the incoming fuel line to the fuel rail that you took off). Do this for 5-10 seconds.

You should definetly see the leak after this.

 

i had a similiar problem in mine. The line going to my fuel pump had a hole in it.

 

ok.... I plug'd that Cable... Let the Pump run for a Good bit.. i can smell gas around that Area.. But cant See A leek.. so im in the right Area at least

 

let the fuel pump run for a bit, it is probably seeping out of some place. Once the lines are pressurized you will find it. Try running your finger along the ends of the pulsation dampner and around the ends of the fuel hoses. keep looking, you will find it.

 

Also look for a wet puddle on the top of the engine block near that area, or some place that looks damp/moist.