Jeff RX7

Hi, as I said in the title ,

when i push WOT my car smell fuel very strong !!!

I've checked purge system (solenoid, check valve), pressure regulator control, fuel damper, primary and secondary injectors, primary and secondary fuel rails ... NOTHING !!!

Have you an idea.....

amp

iTrader: (50)

could be an lim gasket leak... or a failed valve in your brake booster vacuum line..

twokrx7

iTrader: (1)

Maybe it's the higher fuel pressure under full throttle that is causing this noticeable leak. Do a fuel pressure test with the car parked and the engine shut off. The owner's manual gives the details. This will allow you to test the fuel system at pressure up to about 70 psi.

Jeff RX7

"or a failed valve in your brake booster vacuum line.."


??? I don't see... can you explain.

"The owner's manual gives the details. This will allow you to test the fuel system at pressure up to about 70 psi"

Can you give the section and page ? Thank you

amp

iTrader: (50)

vacuum line that runs from the brake booster to the firewall..
there should be a check valve there... my source of fuel smell was the lack of it..
previous owner replaced the hose without the valve...

rotorbrain

hmmm. . . maybe i should check mine.

alberto_mg

search for posts on fuel smell made by Mahjik

could be the aluminum check valve is bad, fuel pulsation dampener leaking, injectors leaking or something else.

either way, be careful driving the car, buy a fire extinguisher and keep it in the car and get it fixed asap to eliminate the risk of an underhood fire.

David Beale

If the vacuum booster check valve is bad you cannot apply the brakes while under boost! You are not as strong as the boost multiplied in the brake booster. This would, of course, only impact you if your throttle stuck open and you tried to slow the car with the brake pedal, instead of switching off the ignition.

I wonder if a failure of this valve also results in a "ticking" sound while under boost? Maybe I'd better check mine, as I just purchased a "Mityvac" hand vacuum pump.

mad_7tist

if it smells like gas under boost look into leaking injector grommets that seal the primary especially, to the block and as said a lim gasket leak

WanKeL FD RX-7

iTrader: (7)

might be an injector leak ...

Montego

iTrader: (1)

Fuel leaks are no joke.

That's how I totaled my first FD. Fix your **** ASAP.

Jeff RX7

I checked primary and secondary injectors ans fuel rails... there is no leak.
The aluminium check valve is fine too.

I've got brakes all the time... under boost or not.