Most of the time when a small engine cranks over, starts and then dies shortly afterward the problem is in the fuel system. Normally it is caused by bad gas that has gummed up the fuel system. (normally in the carburetor) If this is the problem you will probably need to take the carburetor off and clean it out.
In very small amounts, yes. In large amounts the engine won't start or run.
If the timing is off by a few degrees the engine can start but will run rough. More than a few (depending on the engine) it will not start.
Diagnosis: Engine Won't Start or Run Check related link below
The year, make, model and engine info would help.
It is required for a computer controlled engine to run at all.It is required for a computer controlled engine to run at all.
That engine needs fuel, compression and spark to start and run. You are missing one of those.
It won't run, or it will run for a minute and not start again.
The engine will not start or run.
Makes it hard to start and run poorly.
The engine needs fuel, compression and spark to run, it is missing one of those.
Nothing as long as you do not start the engine. If you start and run the engine with no oil, then it will self destruct in short order from lack of lubrication.
Start and run, no. Cough, backfire, yes.