Recently one morning when the engine started, the car started vibrating/shaking and smelled of burning gas or something. since it was out of gas and maybe due to cold weather, i thought to fill the gas and i should be fine. the problem is still there even after i filled half tank. Anyone know whats going on? it is a 8cylinder car. My mom used to be the prior owner of the car. She has mistakenly driven the car in gear 1 or 2 instead of Drive few times.
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It sounds like a plugged catalytic converter. It's kind of like a muffler type thing on your exhaust system. It burns all the unburned fuel that your engine sends through the exhaust for emission control. After a while they can get plugged up & need to be replaced. It's not letting exhaust out so it's choking your engine.=vibration, smell & backfire. You might be able to limp it to a service garage.. Save yourself a tow charge. Good luck
if your smelling gas then it sounds like an ignition problem or timing, could be something in the distributor, coil, or plugs worn out. if this has the corvette motor in it with the distributor mounted at the front of the motor behind the water pump they are known for distributor problems.
I would guess that one or more of the spark plugs, or spark plug (high tension leads) have failed. That would cause the engine to run uneven , off balance,and create fuel vapours due to unburned fuel.
Worse case scenario it could be leak on fuel injectors or fuel line, if possible have some turn engine over with hood open, if you can see or smell fresh fuel, get professional assistance as this is a extreme fire hazard.
this could be a few things. if the odor was of rotton eggs...it's either a broken/loose motor mount that shakes the exhaust system causing the catalyitic converter to make that smell, or, in a worse case, its your transmission overheating and burning up ATF (automatic transmission fluid) and this is causing the torque converter plates to rotate out of harmony with each other causing the vibration. if the smell is more a burnt rubber, it's much more likely you have a timing issue or a worn main bearing on your crankshaft. this causes vibration and wear on the belts causing them to "burn" or emit that burnout smell. either way, take it to your mechanic right away because none of these problems will end well if left unattended. good luck!
The smoke you could be seeing may be steam, your heater inside the vehicle may have a leak and causing steam to rise out of the vents, if you are smelling the steam this is what I suspect. Engine vibration could be a number of things, check the engine mounts to start, one of them is probably broken.
Try getting your tire balaced as you ight have a tire that has seperated from the inner wall, as it sits overnight it will cool down then when you drive it the rubber sofens and the vibration will improve. I have had water in the tire too but i don't think thats your problem.
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