Fuel injector? (Page 1/2)
GeorgeT AUG 11, 09:15 AM
So I recently bought a fiero, got it starting and it was redlining when idle. So I was investigating and saw that fuel was pouring out of the injector. Replaced all of the vacuum lines and still nothings changed. Could this be the TPS? Or something else? There is a YouTube link showing my issue: https://m.youtube.com/watch?v=4sGP-YyXeBs
Any help would be appreciated.
Many thanks
jelly2m8 AUG 11, 11:58 AM
The Spray pattern is probably correct for that RPM, What I see is the Fuel pressure Regulator cover gasket leaking, that will cause a vacuum leak leading to high idle and incorrect fuel pressures
GeorgeT AUG 11, 12:01 PM

quote
Originally posted by jelly2m8:

The Spray pattern is probably correct for that RPM, What I see is the Fuel pressure Regulator cover gasket leaking, that will cause a vacuum leak leading to high idle and incorrect fuel pressures



Ok so replacing that should fix the issue? Thanks for the reply I’ll look into a replacement thanks a lot
jelly2m8 AUG 11, 12:09 PM
Where about are you in NS? I may have a few complete throttle bodies still.
GeorgeT AUG 11, 12:11 PM

quote
Originally posted by jelly2m8:

Where about are you in NS? I may have a few complete throttle bodies still.



I’m just outside ahmerst how much would you charge for one? It’s be greatly appreciated
jelly2m8 AUG 11, 01:56 PM
I might be able to get one dropped off to you soon, I want nothing for it.
GeorgeT AUG 11, 01:59 PM
It’d be better to meet in Amherst if that’s be ok?
And it would fit an 1986 iron duke 4cyl?

[This message has been edited by GeorgeT (edited 08-11-2023).]

Patrick AUG 11, 04:46 PM

quote
Originally posted by jelly2m8:

What I see is the Fuel pressure Regulator cover gasket leaking...



Good eye!

Should also mention... nice clear sharp video by the OP.

[This message has been edited by Patrick (edited 08-11-2023).]

theogre AUG 11, 06:42 PM
Ignore injector spray.
High idle is something else wrong and fuel matches air to run like that.

The TBI need a "rebuild kit" to fix the fuel leak. The kit has all gaskets, other soft parts & F-regulator diaphragm.
Used TBI sitting on a self for months/years may need same.

Besides TBI problems can still have vac leak. see that @ https://web.archive.org/web...cast.net/~fierocave/

------------------
Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)

The Ogre's Fiero Cave

GeorgeT AUG 11, 07:27 PM
So I’ve tightened the torx screws on the fuel meter body and the revs have come down to 3k rpm so I’m assuming it’s the gaskets causing the rest of the leaks if I’m correct? Thanks for the responses saved a lot of time and money