djjab57

iTrader: (17)

Well when i start my car in the garage to warm it up i get a strong gas smell, it did this before the header install and passed the sniffer test. now its getting worse and when i sit at a red light and take off it will stumble for a second then take off normal. and now im getting a random backfire more so with the stumble and back fire when im getting on it for a little while. Im starting to think a leaky injector?!?!?! ive pretty much changed everything else but have never even looked at the injectors. what do you guys think
Thanks for any input

Black93_Formula

it kinda seems like it could also be your opti going out. stumbling and backfiring is a symptom but idk about the gas fumes. mayb a fpr or pump to. id hook a fuel pressure gauge up n see if your pressure is low.

dlk1950

I don't know alot about this but sounds like problem i had last fall.car was missing and stumbling seemed just like opti but we had just put a new one in.
gas fumes were bad. after trying about everything turned out to be 1 injector had failed.

djjab57

iTrader: (17)

thats what im thinking, my new gm opti has about 3000 miles on it. and i know the feeling of the opti going out and this isn't it . it only misses that first brief second you push the gas like it has to much leaking in

ss.slp.ls1

iTrader: (36)

Easiest thing to do is to pull up the rail with the injectors still attached. Prime the pump, if you see any fuel come out of any injectors, those injectors are bad.

djjab57

iTrader: (17)

thanks ss i will be doing that tonite i hope. and if i need some how much are you selling your for?

RED PUNISHER Z

my car is kind of doing the same thing ...but only when the cars cold ...the check light will come on and it will stumble... but then when it warms up it runs fine...i also have a new opti on it..it has like 2500 miles on it...my guess was the maf so i changed it out with one of my friends and it work a lil bette...can it be the injectors too

ss.slp.ls1

iTrader: (36)

You mean my set of stock injectors? Not sure what they go for. How does 40 + shipping sound? These are like new.

djjab57

iTrader: (17)

thanks ill let you know as soon as i check mine out

djjab57

iTrader: (17)

I cant really remember,it is only 4 bolt holding the fuel rail on right !?!?! anything else???

RamAir95TA

iTrader: (2)

Yep - 4 bolts on top.

You might need to gently pry on the fuel rail to get the injectors dislodged from the intake manifold.

djjab57

iTrader: (17)

thanks, yes i was already informed to be careful not to let the O-rings fall in

djjab57

iTrader: (17)

well i pulled out the injectors and ran the pump a few times and seen no leaks, i guess that doesnt mean there is a bad one in the bunch

LaVy

iTrader: (5)

Did you figure out the problem? I'm experiencing a similar problem
My problem:
It will sometime run good
Then i'll be driving and at low RPM's it will cut out or stumble
I floor it and it hesitates for a second then it will take off hard and go smooth all the way to the redline
It seems like if I shut the car off let it sit a minute and start it back up it will run good till I go down the road a couple miles then it will stumble, hesitate, occasionally backfire and idle rough.

djjab57

iTrader: (17)

not yet, i did check to see if any of my injectors where leaking but seen nothing there. my car idles fine and only starts stumbling when i slightly push on the gas while driving. the back firing only happens after i have driven it hard, and the stumbling gets worse as well

Formula350

iTrader: (3)

When you install the injectors again, if there's no ripped O-Rings, use some vaseline on the lower O-Rings so they don't tear going back in.

djjab57

iTrader: (17)

well last night i was looking around a little more and found another plug wire laying on the header, so maybe i found the problem

ss.slp.ls1

iTrader: (36)

It's funny when some people say I "looked" at the wires and they "look" fine and disregard it, only to discover 1 or 2 burnt wires after needless hours of troubleshooting. Not talking about you in particular, just stating in general.

djjab57

iTrader: (17)

LOl i know ive looked at them a 100 times since the header install, i had to change 3 right away. i need some OTVC wires

ss.slp.ls1

iTrader: (36)

Nah, I used the factory looms and I added Accel heat sleeves to the plug boots and no problems whatsoever. Just tuck them close to the block, keep them away from the headers and you'll be good. Use zipties generously if you have to.