TheTwinTurboRX-7

I was driving home yesterday and I took her up to 8000 rpms on the way. Car started to smell like gas. When I got home I saw there was a trail of gas behind me. I was quite distrubed. It is running right out of the back of the engine. From the left rear corner when you are looking at the engine bay. I can't get my head in there to see what is wrong. I thought mayhaps someone might have an idea what is wrong and/or broken so that I can fix it. The car is a 91 convertible with less than 35,000 on a remanufactured engine. Thanks a lot.

Aaron Cake

iTrader: (1)

Jumper the test connector and set the key to "run" but don't start the engine. Walk over to engine compartment and observe where gas is spraying out from. Replace hose or tighten clamp. The test connector is the yellow two pin connector on the passenger side near the shock tower.

scathcart

First, check the pulsation dampner.
You can read up on it in this subforum's archive in RETed's thread.

TheTwinTurboRX-7

thanks y'all, one of my friends was just telling me that it might be the pulsation dampener, I will go read up on that now

Barwick

before you check the PD, do what aaron cake said. It's right by the pressure sensor.. wait you don't have a TurboII.. like he said it's the yellow connector in front of/right by the passenger shock tower. Watch the fuel flow out of one of the (probably) fuel lines.

djantlive

Check fuel line leak first,

Check PD or leaking injector next, PITA. If you have the injectors off, you might as well get them flowed and cleaned.

Don't drive the car and get an fire extinguisher on the car JUST IN case if you set off a fire while fixing the car.

TheTwinTurboRX-7

Ok, it's not the pulsation dampener. The gas is leaking from the back of the engine, spraying all over the bell housing. The PD is on the front of the engine. There are four lines, three metal ones and one fuel one that has the plastic cover over it. It has to be one of those. They attach to the back of the manifold below the TB. Any idea what these are? I think I am going to have to take the TB off to see what is going on. Will the system still run so I can see the leak with no TB on and will that cause any problems??

djantlive

Not sure about 2nd gen, but the 3rd gen's PD is in the rear of the engine on the passenger side.

Good luck and let's hope it's just a fuel line.

TheTwinTurboRX-7

well the second gens is on the front, I am not clueless, I found the PD it is fine. I hope I can find the line when I get it apart.

scathcart

No one said you were. We're just trying to help!

Those three lines you mention are vacuum lines. They are not the culprit.

My next guess is going to be failed clamp or failed fuel between the primary and secondary fuel rails. You are correct, the PD is on the primary fuel rail on the front of the car on your second gen. It is incorrect to say that it is on the front b/c you have a second gen, b/c on the TII's, the pulsation dampner was on the rear side of the primary fuel rail.

It is unlikely it is the banjo bolts or the copper sealing washers. I've never heard of them going.

You might wanna have some clamps and 5/16" (IIRC) fuel-specific rubber hose on hand before you start. Once you get the dynamic chamber off, it'll all become very easy and very clear.

Label your vacuum lines, just as a reminder, and check all of the vacuum hoses as gasoline can break them down. You don't need a vacuum leak down the road.

Only other option really is a bad injector o-ring, but I seriously doubt it. If it is, remember that these nitrile o-rings are gasoline-specific, and generic hardware store ones can NOT be substituted.

You may have some trouble scraping the gasket off the intake manifolds. To save yourself this trouble again, put some synthetic grease on both sides of the gasket before you reassemble. Also, I recommend you do use a gasket upon reassembly, and no sealant, as I have had problems with vacuum leaks using permatrex. In a pinch, cut your own gasket out of cereal box cardboard.

Good luck, and let us know how it turns out.

Sean Cathcart

Aaron Cake

iTrader: (1)

Pretty sure it's 3/8" fuel hose.

TheTwinTurboRX-7

thanks a lot guys, you have no clue how much I appreciate this. I am going to tear it apart tomorrow. thanks again.