Probably not if it still runs but it will be putting considerable strain on the engine due to the timing being wrong. Not all engines have an interference fit between valves and piston - somewhere on the www that information MUST be available, you just have to find the information for your engine.
On the 2.4L the intake valves can hit the exhaust valves and bend.
Smoke from the intake is an indication of a serious backfire. Sounds like your engine has slipped its timing belt or the distributor got moved.
most time it is caused by intake gasket failure
There are a few causes: Damaged or disconnected hoses (or component) from intake manifold. Worn out intake manifold gasket. Improper replacement of a part. Cracked or damaged intake manifold.
NO.
of course the valves get messed up in a timing belt failure. a simple way to fix it though would be to replace the timing belt and have one of your friends start the car. then proceed to try and keep the belt in place with your hand, in attempt to straighten the valves. This previous answer just shows the lack of knowledge allowed to answer questions on the internet. FYI, There are interference engines and clearance or non-interference engine. The former have longer valves that can hit the pistons when the timing belt or chain breaks or gets out of timing. In a Toyota, only the intake valves are usually damaged. In a BMW, the pistons are usually damaged requiring a near total engine rebuild. In clearance or non-interference engines, the valves are shorter and do not hit the pistons when the timing belt or chain breaks or gets out of time. In this case, the car stalls and needs to be towed to a mechanic for a new timing belt. As an unofficial rule of thumb, I look at the factory's recommended maintenance schedule. If it recommends changing the timing belt at 50 or 60,0000 miles, it is likely an interference engine. If the change interval is 100,000 miles or more, it is likely a clearance or non-interference engine. Also, if the timing belt is not well protected, like with a flimsy plastic cover, it is usually a non-interference/clearance engine. Timing chains can break or jump sprocket teeth and damage the timing chain cover. This can be due to a chain guide or tensioner failure. In an attempt to reduce vehicle weights or some such weak reason, many engines that had lifetime double link chains now have single link chains subject to failure. Yea, Toyota...
Improper engine timing usually Could also be leaking / damaged intake valve(s) or on an older engine with a carburetor if the accelerator pump is bad it will spit back when throttled up quickly
The e36 M50 has a timing chain. The e30 has a belt. Black plastic intake manifold = Chain Metal intake manifold = Belt
There could be many causes, but the first that comes to mind is that the timing [between the pistons/valves and distributor] has "jumped or slipped," causing the the fuel mixture to be ignited by the sparkplugs, WHILE the intake valves are still open.j3h.
That could happen if the timing belt slipped time. Something similar happened to a Nissan 3.0 liter I worked on a couple years ago. If the timing only skips a couple teeth it may only be off in one place. The car I was working on had a worn out timing belt tensioner pulley that caused the problem.
the timing mark on the crank goes down matches with v notch intake and exhaust both go up but be sure you use the intake mark for and exhaust on that gear.
A timing belt is driven by the crank shaft and allows the camshaft to turn,which opens and closes intake and exhaust valves in their proper timing sequence.