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1991 Deville vibrates and stumbles while accelerating

2K views 12 replies 7 participants last post by  CaddyDevilleOwner 
#1 ·
Hey guy my 1991 deville has a taking off problem and I don't know what it is. It smells like gas at the exhaust. I checked my FPR and no leaks or nothing. Any ideas on what it could be? I've replace the distributor and has a full tune up all the way around.
 
#12 ·
If the cat hollowed itself out and was replaced, its insides would still likely be clogging up the muffler. Also if the muffler was replaced but the lines weren't blown out once the cat was replaced by starting the motor with the old muffler off, anything left inside the lines could clog the new muffler once the engine started.
 
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