C5042081

iTrader: (5)

Ok well my minor problem is turning into a bigger one, I had a small shake that turned into a pretty noticable one, The car stinks like gas when running, its runs like this from the start.( no engine lights on)

I asked a gm tech and they are leaning towards a stuck injector or something fuel related, is it possible to a injector to stick open?
I really can't drive the car so any suggestions welcome so i dont have to get it towed. The car is amost acting like it out of timing.

C5042081

iTrader: (5)

so far i checked all vacume lines, every sensor is plugged in, plugs and wires are good, injecters are clean

phantomLT1

iTrader: (2)

Mine did this and it ended up being a bad exhaust leak. Is the 95 ECM in it?

C5042081

iTrader: (5)

yup 95 ecm in it, also when i drove it last it used huge amounts of fuel, got like 3-4 mpg

LT1Falcon

iTrader: (3)

an exhaust leak could be causing the smell but not the shaking and gas milage. deffinitally fuel related. check regulator also

LT1Falcon

iTrader: (3)

i take that back. if the exhaust leak was before the 02, it could have a slight effect but probably not enough to notice and definitly not your problem

phantomLT1

iTrader: (2)

My car runs real rich it is a 96 with the same computer you have a 95 ECM. The performance shop that built my motor said 95 ECM can program more fuel delivery than a 96 and with my setup I would gain more. My car was missing real bad at 1 time . I changed plugs, wires, tune. Still did it . So I was like screw it I took it down to Waco to the people who built the car LG performance and they found real bad exhaust leak where you stated . If his car will not idle and trys to load up and die and at a certain rpm the car bogs real bad . I would check the exhaust leak. I would take it to a tuner and plug in scanner .

LT1Falcon

iTrader: (3)

could be the reason, i just wouldnt think that it would have that much of an effect. after all, the exhaust fumes are still getting to the 02, just not as much. in reality the 02 doesnt use all the fumes, so all the gas doesnt really have to pass it.

C5042081

iTrader: (5)

the car will idle and hold, the vapor of gas burns your eyes its so strong, I have the car on stands and i went over the whole exhaust and found nothing, the cat back looks like it was welded and the only other place couold be the cat and manifold flanges, they all look good

C5042081

iTrader: (5)

I am a pro at taking off the fuel rail so ill check out the regulator

LT1Formula007

iTrader: (66)

Just my .02 check the regulator first and if not, Check your pressure on the rails with a fuel pressure gauge to see if it is high for some reason; if a pump is bad it can spike pressure or lose pressure tremendously. Although pressure usally drops, just an idea. BTW I would also check to see if the plugs are fouled out with gas b/c if it's running rich plugs can get drowned out pretty quickly. Good Luck!

Puck

iTrader: (17)

What do your o2 readings look like? Is it popping out the exhaust?

It can be a number of things, o2's, fuel regulator,exhaust leak - hell, even the throttle body can cause it by causing split BLMs, making the computer think it is lean and dumping too much fuel.

Best bet is to scan that sucker.

edcmat-l1

iTrader: (10)

You dont have to remove anything to check the regulator. Just pull the vacuum hose off of it and see if theres fuel in it. If so, the regulators leaking.

C5042081

iTrader: (5)

ok i did some testing tonight , I used a pulse light to test the injectors and 3 of them were not pulsing , either not working for stuck open. would anything cause it to this or are the injecters just shot

LT1Falcon

iTrader: (3)

this is cliched but check connections

infinitebird

iTrader: (11)

If it's the stock injectors yes they can stick open if they aren't working.

C5042081

iTrader: (5)

all connections tested , all have voltage , moved injectors to different rail slot and still have 2 totally not working and 1 off and on, guess i have some dead injectors

C5042081

iTrader: (5)

that could explain my rich running condition, and bad gas usage

LT1Falcon

iTrader: (3)

how many miles do they have on ithem? ide say go ahead and replace them, youve got it narrowed down pretty good, not much else it could be

C5042081

iTrader: (5)

84k on the injectors, I thought something was acting wierd a few weeks ago when one went out , but 2 or 3 was big time noticeable

pretty sure this wil solve the problem but then again i wont know will i drop the new ones in. thanks everyone for the help