My 93 Z28 use to be in pristine condition. it only has 75k miles and all maintenance work has been kept up. Just recently, I noticed it starting to get ever so slightly sluggish, I thought it was my imagination. About 2 days ago it really started getting sluggish, and I have to give a little bit more gas than I usually do to accelerate and at the same time the motor is running a little more rough. I thought maybe it was congested or it was just working something out so I gave it 75% throttle and it backfired a couple times? I noticed now when I give it a lot of gas like that it will occasionally backfire. I checked the oil and coolant, they have not mixed so it's not a blown headgasket. I also noticed a weird smell coming from the car today, some sort of burning smell. My first guess about all of this is some sort of fuel issue, maybe it's running to rich or too lean? O2 sensor maybe? I'm not a Camaro expert or even very familiar with domestics, so I'm hoping someone can help here?
2007-06-30 01:23:34 · 4 answers · asked by Sandfrog 3 in Cars & Transportation ➔ Maintenance & Repairs
Just noticed something else, I smell a pretty strong burning smell after hard acceleration. Doesn't smell like fuel, but I could be wrong.
2007-06-30 14:45:52 · update #1
I know it's coming from the exhaust too, not the engine bay, since the rear of the car had the smell but not the bay.
2007-06-30 14:49:09 · update #2
Lean it is! Now it is time to change that fuel filter. Do you hear any more electric fuel pump noise? If that doesn't do it test the fuel pressure.
2007-06-30 01:29:35 · answer #1 · answered by John Paul 7 · 0⤊ 1⤋
Don't be surprised if after all else checks out they come back at you with bad injectors. You need to have everything checked as stated by other answers and if all else checks OK ,check the resistance of each injector.Should be 15 ohms each ,if memory serves me. GM has a problem with them. If you find injectors with low/no resistance you have found your problem. They should all be almost exactly the same.
2007-06-30 10:21:32 · answer #2 · answered by David S 5 · 0⤊ 0⤋
Sounds like your timing is off. a backfire through the carburetor indicates that the timing is to far advanced and through the tail pipe to far retarded. you may have to change out your timing chain. good luck
2007-06-30 08:50:49 · answer #3 · answered by jack w 4 · 0⤊ 1⤋
1,,check plugs and wires...2 check cap and rotor.[ they go fast] 3...throw can of injector cleaner [sorry jack no carb]
2007-06-30 09:10:15 · answer #4 · answered by Anonymous · 0⤊ 0⤋