A misfire caused by the ignition system exhausts unburned fuel into the exhaust system that enters the catalytic converter and causes its temperature to rise dramatically. An exhaust issue could cause for cylinder 4 to misfire. The camshaft lobes, which are responsible for opening and closing the intake and exhaust vales, are another source for a misfire and rough running engine. The cam lobes for the No. 4 cylinder should be inspected to see if they have been worn down due to lack of oil or other mechanical problem. A damaged camshaft lobe will not allow a valve to open properly if at all.
If the cat was damaged and restricting the exhaust it could cause a random misfire (P0300) but you would also have a severe loss of power.
Well there several things that can cause this. The first is an exhaust leak. Have your exhaust inspected. The second is engine misfire due to the timing being off. In turn could cause other problems. If you have a exhaust leak at the engine, you could of burnt a valve. You may have a worn out cam shaft or timing chain. It could be a collapsed lifter, bad valve spring. The first 2 things to check are the exhaust and the engine timing. You need a good mechanic that knows these chevys for your best fix.
Could be a misfire. In need of a tune up.
Probably a misfire, it could be in need of a tune up.
Anything that could cause a cylinder misfire can cause the check engine light to flash. A restricted fuel filter is one.Anything that could cause a cylinder misfire can cause the check engine light to flash. A restricted fuel filter is one.
If you have a "check engine" light on, start with having the codes read. A misfire code can tell you which cylinder or cylinders are having problems. A misfire could be the cause of your engine vibration.
The exhaust couldn't get out of the engine, it could get in your vehicle and kill you with carbon monoxide poisoning as well as ruin your engine.
You could try a catalytic converter
you could have a small hole in your exhaust between your engine and your muffler....you can patch the exhaust or replace your exhaust
Yes, if the wire is old and frayed or if it is rubbing against metal the wire could ground out and discharge into the engine block before it get to the spark plug causing the plug to misfire. If the contacts are worn or loose you could also get an intermittent misfire.
The Concorde could misfire for several reasons. Start by checking for proper fire to the spark plugs. Then check engine compression to see if a cylinder compression is down.
It could just be condensation which forms in the exhaust system outside of the engine, or you could be leaking coolant into your engine (typically via the head or intake manifold gasket).