My '98 is leaking gas from what appears to be an injector? (HELP) - Toyota Nation Forum : Toyota Car and Truck Forums

Maim Menu · 03-17-2009, 04:16 PM

The car developped a faint smell over the course of the last couple days, but yesterday and today the smell became very distinctive.

Gas is leaking from the fuel rail, on the passenger side area.

There are electrical connectors there I can only assume are for the injectors, if I slide my fingers from the connector down the rail, I can feel gas soaking up my fingers, wich can't be good from any angle you look at it. It feels like some gasket or grommet on the injector broke and leaks. I'd like to take a look at it,

Any ideas if this is an easy thing to fix? I see there are two bolts holding the fuel rail down to the engine wich is easy enough to undo, but the Haynes Manual isn't exactly clear on how to relieve fuel pressure from the system. And I'm curious as to how the injectors will pull out of the head, will I need new gaskets and everything?

Need some advice here...

Maim Menu · 03-17-2009, 05:01 PM

Went back to take another look, it's definitely the injector, I have no idea if the thing is cracked or if it's just a O-ring on it that crapped out. The engine is running fine so I'm assuming if the injector was cracked it would've been running pretty badly but it's not.

Here's a picture of the offending injector, injecting a little bit of misery in an otherwise pleasant day :

Maim Menu · 03-17-2009, 07:20 PM

Thanks a lot, basically the fuel rail will just lift right up the head after the bolts are loose?

I'll post a DIY of course

The exhaust pipe wasn't me, but I sure hope whoever gets screwed over car parts on the net gets his money back.

frenum49 · 03-17-2009, 07:45 PM

Quote:

Originally Posted by JJJJJJ

Just try replacing the gasket with a new one first. If that doesn't work you might get lucky and find a used injector.

To relieve pressure, undo the gas cap and let vent.

Disconnect the inlet and outlet banjo bolts at fuel filter using a flare wrench (if you use anything else you risk damaging the fuel lines) to reduce pressure to rail.

Seeing as you replaced the O2 sensor, you should be able to handle this quite easily.

Needless to say keep a fire extinguisher, gloves, and a water source nearby.

Also wear eye protection and keep the duMauriers away.

By the way, did you ever recover your cash for the exhaust pipe you ordered ?

Venting the gas cap will not bleed fuel line pressure. Depress the schrader valve on the fuel rail. If yours does not have one, just put a rag under the injector and pluck it out of the rail. Lube the new o-rings to avoid cutting them on re-assembly.

Maim Menu · 03-17-2009, 08:00 PM

How about disconnecting the fuel pump under the back seat and running the car until it stops?

frenum49 · 03-17-2009, 08:03 PM

Quote:

Originally Posted by Maim Menu

How about disconnecting the fuel pump under the back seat and running the car until it stops?

Just disconnect the negative battery cable and pluck the injector into a shop rag. There will be some pressure release but you will laugh at how little it actually is.

Maim Menu · 03-17-2009, 08:39 PM

You mean it's not gonna piss out when I remove the fuel rail itself? Sorry about the stupid questions, I just love crunchy details

frenum49 · 03-17-2009, 08:42 PM

Quote:

Originally Posted by Maim Menu

You mean it's not gonna piss out when I remove the fuel rail itself? Sorry about the stupid questions, I just love crunchy details

Sure it is gonna piss out some fuel but your acting like you are preparing for a geyser to erupt under the hood. Thats just not gonna happen. You are over-thinking a simple task.

Maim Menu · 03-17-2009, 09:04 PM

Perfect, that's what I wanted to hear

nuron · 03-18-2009, 03:34 AM

1965 Impala, very nice...

Maim Menu · 03-18-2009, 07:15 PM

^^ Yeah they are gorgeous IMO, I'm going to see one on Saturday, I hope it's not a piece of junk, it looked good on pictures.

Well, did the job, fairly easily. The injector seat looked all scraped up so I bought the seat and changed it. All smelled well on the first test drive but then I got home and realized I had nothing to eat so I drive to the convenience store, come back, lift the hood out of sheer curiosity : Fuel smell, the same injector seemed to be at fault again, left it at the dealer.

They are open until 2 AM wich is good so they might have time to look at it and call me back tonight wich is awesome.

EDIT : I didn't re-install the new seat properly and it got somehow squashed. Oh well all is good now. I hate working when it gets dark but I was a bit short on time, didn't take any pictures for that same reason...

nuron · 03-19-2009, 04:02 PM

Make sure to post that up!