Because the replacement distributor and spark plugs wont fire correctly if it installed in any other position.
That the engine is cool.
The cap has a tang that must fit into the housing before you can engage the retainers.
Make sure you aren't leaking coolant into the crankcase. The engine will not start while there is moisture inside the distributor cap. Perhaps it was sprayed when you cleaned the engine, perhaps the car ran through some deep standing water and splashed the distributor... in any case, it must be completely dried out before the engine will start and if there is moisture in the crankcase it will condense to the inside of the distributor cap.
If the engine is EFI you must unplug the 4 wire plug behind the distributor before starting. Then rotate the distributor while using a timing light to the correct position. If the engine is NON EFI then you must unplug the vaccum line from the distributor and adjust the same way. You should plug the line off to avoid a high idle situation as well..
There is a gear on the distributor shaft and a gear on the end of the camshaft that it engages with. The gear on the camshaft cannot be removed as it is part of the camshaft. The gear on the distributor shaft can be removed if it is worn; however, this is rare. These two gears must be in proper mesh for the engine to run; one cog off and it will not start.If you need further assistance google ' finding top dead center on a 350 chevy'.
If you have made the mistake of removing the distributor from an engine without marking exactly where the rotor was, and where the distributor was, you have created a lot of work for yourself. First, you must get the crankshaft to Top Dead Center for the number one piston. There are timing marks on the pulley, which must line up with a pointer or mark mounted on the block. Once this is done, the distributor must be inserted into the head in such a way that the rotor will be under the number one cylinder plug wire position when the distributor is seated. This usually means having the rotor about 20 degrees offset when inserting the distributor, to allow for the worm gear to line up with the drive gear. Then, you have to turn the distributor until the lobe on the distributor shaft which opens the points is just beginning to open the points. Once this is done, the engine should start, and then will need to be timed with a timing light.
Well if you were working on an old ford engine you could slide the head out from under the intake with out removing it. But on a chevy you MUST remove the intake manifold to get the head off. Now that's means you would have to remove the distributor too be able to remove the intake. It can't be done CORRECTLY by leaving the intake on. SO NO.
its a vague question but i think you need to separate the transmission from the engine they are connected with a splined shaft and they must be pulled straight apart before removing
20mm
The safety must be in the on position
Must remove the entire engine
The intake air temperature sensor is located on the mass airflow sensor in the engine. It is in the engine's air cleaner's cover. Since it is electrical, one must disconnect the battery before touching or removing it.