allenhah

iTrader: (4)

Hey guys...I know this question's been thrown out all the time, but I'm now having the problem and have no idea where it's coming from. I have a dp, hfc, cb, intake, M2 IC, and M2 ECU. I know the car runs really rich even at idle, but the fuel smell emanating from around the turbo area is becoming overwhelming, and I'm concerned about the possible dangers.

Do any of you have any ideas or suggestions where to look? I have a driver's school coming up and want to fix everything before I go...

Thanks!

mike172rg

I had this fuel smell prob... Check the turbo Y-pipe coupling, it may have a crack in it. When I replaced mine with a silicone part, (it had a big crack in it), the smell went away

JONSKI

First off, get yourself a fire extinguisher, PRONTO. Second, If it's coming from around the turbos, then it could likely be the Fuel Pulsation Dampener. When is the last time you had it changed?

allenhah

iTrader: (4)

I've been carrying around a small halon extinguisher in the passenger side bin for a while now, but obviously avoiding an engine fire is preferable. =]

I've been doing some research now, and it definitely sounds like the FPD may be the culprit. The fuel smell has definitely developed for several months now, and only now am I realizing that the smell is simply too strong to pass off as a rich-running motor.

I'm going to take off the UIM this weekend and check all the crap down there. I figure since the FPD is such a common problem, I'll probably go ahead and order one now as well as some new injector o-rings. THEN I'm figuring that since I have the injectors out anyway, I'll go ahead and send them to RC or Marren for servicing too.

I'm also going to check the y-pipe for cracks while I'm in there.

Luckily, I'm now in a position where I can have the car out of service for a period of time w/o dire consequences since I moved into the city and have a roommate and friends with cars close to me.

Still...I KNOW I'm going to run into some other problem while doing this work. That's just my luck. =]

I've flipped through the workshop manual, and the job doesn't look TOO difficult since I've removed and isntalled the UIM several times now. It looks like I'm going to have to remove the solenoid rack too? Or are the primary injectors and fpd accessible w/o doing that?

On a side note, I'd like to just say that the times we live in these days is so awesome when you think about it. The internet is such an amazing resource when it comes to these things, and I've learned SO much b/c of the ease of communication.

Thanks to everybody that's ever made a suggestion or reported results or simply b!tched about certain dealers!

=]

JONSKI

Because of the fuel leak, it's possible that your vacuum hoses have been damaged, so you might want to replace them. I *believe* that the FPD job is possible to do with just removing the ACV (Air Control Valve), but when Mindphrame and I did it, we took the rack out and did the turbo simplification. I would try to take out just the ACV first, and if that doesn't work, then take out the rack.

allenhah

iTrader: (4)

Cool! IIRC, there was one bolt on the ACV that was a PITA to get at the last time I tried that, but I gotta do it anyway.

Which vacuum hoses?? All of them? Can I just get some silicone hoses for this?

JONSKI

With mine, all of the vacuum hoses under the UIM were either firm or crispy, and they were only about seven months old! I took a little vid of Mindphrame testing the flexability of one of the hoses we were replacing.
http://www.rpi.edu/~skrzyj/rx7/MVC-460V.MPG
They were all pretty much like that. It might be a good time to go silicone, or maybe even viton.

allenhah

iTrader: (4)

Yeah I'm doing that now too. Ha ha ha...I guess it's a good and bad thing that this happened, and I figure since I'm in there anyway, might as well take care of all the crap at the same time.

Any MORE suggestions?

=]

JONSKI

Maybe get your injectors cleaned in addition to new o-rings.

allenhah

iTrader: (4)

Already planning on doing that too. =]

mjw

iTrader: (1)

You can get both rails out by removing the ACV, that lower nut is a pain in the a$$ to get though.. I know it. The secondary rail is easy to get out with the ACV out of the way, the primary is tougher to get to but you can get it out without removing the rack.

Matt

dpasseto

Be careful doing so many things at one time. You'll start to forget where things were and what it's supposed to look like....etc!!! I'd just do one project at a time. Just because you've got it all ripped apart doesn't mean you have to do it all at once. Solve the original problem first, then go forward with the rest. Good luck

allenhah

iTrader: (4)

Bah!! That's true, but it's such a pain for me to get in there! I have a digital camera, so I definitely plan on taking lots of pictures as I rip it apart. I can pretty much do the removal/reinstallation of the UIM with my eyes closed...especially since a lot of the connectors and a few vacuum hoses actually DO need to be replaced without being able to see them! =]

allenhah

iTrader: (4)

Ugh...I've run into some problems removing the injectors. First of all, do I need to remove the vacuum hose mess/bracket thing? I've removed the ACV, but I'm still have a little problem getting to the primary injectors...I actually can't see them yet!

Do I need to remove the fuel rail to get to the injectors and FPD? Can I just pop the injectors out once I get the covers off? It seems a little tough, and I don't wanna force anything I'm not supposed to.

Thanks for any help!!

allenhah

iTrader: (4)

Oops...just read through the other posts, and I guess I do have to remove the rail...the question is then can I just remove the two bolts holding it in and the lines going to it? Any warnings on what to be careful of? Do I remove the injectors first and then the rail or take out the rail with the injectors still on them?

Also which shop should i send the injectors to for balancing/blueprinting? RC and Marren are good from what I hear.

Thanks again!

allenhah

iTrader: (4)

How difficult is it to pop the injectors out? Any tips on how I might be able to do that?

mjw

iTrader: (1)

Ok, to get the primary rail out you still need to move some of that crap out of the way.. a few vacuum lines need to be removed, and I had to disconnect the wiring harness from the solenoid rack and move it out of the way. You will need to take the rail out to take out the injectors and replace the FPD, the injectors can be very, very hard to get out so removing them with the rail on the car could be almost impossible.

All you need to remove to get the primary rail out is the two bolts and the fuel lines. There aren't really any tricks to it, just make sure your fuel pressure has been released.. or just put a rag below the area where you disconnect the first fuel line. From there it is a game of moving crap out of the way to pull the rail out, the harness will **** you off. To get the injectors out I sprayed some liquid wrench around the tops of them.. you just have to twist them back and forth to get the lube down to the o-rings.. just keep twisting and pulling and they will come out eventually. RC and Marren are both good, send them to either one.

Matt

allenhah

iTrader: (4)

Perfect. Thanks for the help Matt...I'll work on it tonight. What harness are you talking about pissing me off?

mjw

iTrader: (1)

I just mean that the wiring harness will get in your way, there isn't much room to work in there..

allenhah

iTrader: (4)

ah...yeah I've noticed that. The wiring harness has already caused me problems when I was removing the bloody solenoid rack.

Thanks again for the info...it helps me quite a bit.

93TTRX7

You may need new injectors as a whole like I did...mine were leaking but not through the O rings

allenhah

iTrader: (4)

How would I know if this is the case? Will the guys at RC be able to tell me that when I send them in?

sszablya

Should I expect that Mazda replaced this with my reman? Or should I kill Mazda?