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1992 Camaro at first barely runs, now doesnt at all

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Old 08-12-2015, 02:59 PM   #1
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Car: 92 Camaro RS
Engine: V-8 305 TBI

1992 Camaro at first barely runs, now doesnt at all

Hello I need help

this was friday.....
So I've got a problem. 1992 camaro 5.0l tbi.
No throttle response. Barely goes. Does act like it's starving for gas. But never stalls or dies outright. Starred this last Wednesday within 30 min undrivable. Parked at idle, if u hit the throttle by hand it makes that starving for gas sound.
Replaced fuel filter, map sensor, Tps switch, fuel regulator.
As most people know it's hard to hook up for a fuel pressure test to these tbi units. So I haven't checked the pressure but there is fuel flow and typically fuel pumps just quit. This one is pumping.
I'm at a loss. And I guess in denial that it is the fuel pump.


Today....
i bought the fuel pump yesterday and was all prepared to tear it apart. I had to try and drive it to move it to where I wanted to work it about 100 ft away. it didn't make it, now it wont even start.problem has gotten progressively worse. I had hoped the pump had quit completely. It hadn't. The fuel is still spraying out of TBI. So I got a thought to get some starting fluid to see if it would then fire up. Even a car with NO gas will fire then. this one NOPE.

Im starting to think my instincts were right and its not the pump. I put a spark tester on it and its really light and it does have an aftermarket coil on it, maybe it took a crap? but even that coil has been running for 2-3 months.

Any suggestions??????????????????????

OK now changed the Ignition Coil=no change
sprayed tons of starter fluid, still doesnt start. in fact then acts even more like it doesnt want to start.

and I found oil in my distributor, not alot at all enough to pool up a drop but all wet inside from oil

Last edited by 92camaroJoe; 08-12-2015 at 06:04 PM.
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Old 08-12-2015, 07:10 PM   #2
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Re: 1992 Camaro at first barely runs, now doesnt at all

If it doesn't pop on starting fluid, I would aim towards spark. What do your plugs look like? Test ign wires, test the ign module at the parts store.
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Old 08-12-2015, 08:48 PM   #3
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Re: 1992 Camaro at first barely runs, now doesnt at all

Is that oil on the 8 plug contacts that the rotor makes contact with? When water gets inside the distributor cap it can short out the contacts and cause a no start. I'd wonder if that oil is causing that.
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Old 08-12-2015, 08:50 PM   #4
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Re: 1992 Camaro at first barely runs, now doesnt at all

Is there any fuel coming out of the injectors?
The positive side of the coil should have steady 12v, the neg side should have flashing 12v while cranking. If it doesn't I'd replace the ignition module.
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Old 08-12-2015, 09:46 PM   #5
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Re: 1992 Camaro at first barely runs, now doesnt at all

Cleaning the distributor cap,rotor and inside distributor let the car start again but still real rough and barely any throttle.

Quote:
Originally Posted by TylerSteez View Post
Is that oil on the 8 plug contacts that the rotor makes contact with? When water gets inside the distributor cap it can short out the contacts and cause a no start. I'd wonder if that oil is causing that.
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Old 08-12-2015, 09:54 PM   #6
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Re: 1992 Camaro at first barely runs, now doesnt at all

Yes fuel from injectors. That would have made it easy.

It's got fuel. It's got spark. Started at 9:30 am by 20 minutes in could barely drive in parking lot. Today would make it 50 feet. Acts like it's dying for gas but starting fluid doesn't help.

New map sensor, tps, fuel filter, coil, rebuilt fuel regulator.
Quote:
Originally Posted by ex-x-fire View Post
Is there any fuel coming out of the injectors?
The positive side of the coil should have steady 12v, the neg side should have flashing 12v while cranking. If it doesn't I'd replace the ignition module.
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Old 08-13-2015, 07:07 AM   #7
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Re: 1992 Camaro at first barely runs, now doesnt at all

Check the fuel pressure, that way you'll know what it is.
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