My car wont start after replacing spark plugs

Usually @ 50-60,000. New air filter, Gas filter, Plugs and wires.......If car starts running rough or hard to start and miss fire is a good sign of a tune up needed..............Hope this helps.

Hows your battery and connections. If the engine is turning over slow suspect the battery is the end of its life. If it turns over great then it may be time to check the tune up. Cars out of tune become hard to start in the cold. If tune up check the spark plugs first you might get off cheap.

good day Sir, try to check the spark plugs and the coil hope this will help you.

ARE YOUR INJECTORS SPRAYING??

sound like you need a tune up the light flashing is a misfire take it to autozone and have the codes read

hi there the things to check are do you have a spark at the plugs?
do you have compression ?
are the cam shafts turning?
is the cam belt intact?
this are all needed to make the engine run it will turn over great but not start with this things not working infact if the last 3 are not there it will sound diffrent when you are turning it over with the key.

hope this helps Regards JR

Stang: Nissan had a TSB on weak spark related to the Altima's and Sentra's. It had to do with water getting trapped in the spark plug tubes due to the steam hole vents in the plug wires becoming clogged and/on the wires no longer sealing well to the motor, thus allowing water to accumulate into the plug holes. This would cause a weak spark condition. You would still get an injector pulse as long as the ignition can be triggered.
As far as fuses: There is a box on the driver's side which contains fusible links and fuses. Unless you are checking for power with the ignition on, most of the circuits will be dead because they are switched circuits through the ignition switch. The headlights will be hot without the key on, as will the running lights,horn and brake lights.
However due to the fact that you have light spark and have injector pulse, would tell me that you have power to the ECM. If you want to check circuits, buy a cheap test light and follow the instructions. it is a simple diagnostic tool for checking for open circuits.
Hopeful I might have given you some direction. Good luck.
PS: if you replace plug wires, do so with a good quality wire. I have found that NGK wires and the Original equipment wires seem to be the best quality, lasting the longest. Life time warranty parts mean nothing if they fail at inconvenient times and with frequency. Many of these warranty's are gambles made by parts houses based on the fact that people loose their information, don't keep the cars and or just forgot they had the warranty and went out and replaced the parts again.

First make sure you do a basic tune-up on the car i.e. replacing spark plug wires, spark plugs, distributor cap, rotor button, etc. Secondly, the plugs are probably just wet from fuel from not starting. The low oil pressure light coming on is normal when trying to start the car. Make sure to check for codes too and don't press the accelerator when starting the car, otherwise it will flood the engine.

Had any check engine lights come on before you made any changes?
The ignition system uses an ignition coil, crankshaft and camshaft angle sensor along with the car's computer or PCM (power control module). This system can stop working due to a failed ignition module or crankshaft angle sensor.
Testing the ignition system is an easy job that takes about five minutes and can be done using a test light or an extra spark plug. Connect a test light to ground and with one of the spark plug wires or coils disconnected. Crank the engine over while holding the tip of the test light about 1/4 inch from the wire or coil terminal. Keep your hands clear of the test area to avoid accidental shock (non lethal). You can also insert a spark plug into the coil or wire and hold it against a metal ground. You should see a light blue spark in the gap .. which tells you the system is working. If no spark is present suspect that the crankshaft sensor needs replacing which is the most common problem.
But you could also check your relay/fuse box and see if any ignition related relays are bad. One way to check a bad relay is to find another one in the box that is exactly the same ans switch them ... and see what happens.
Helpful?
Good luck on your troubleshooting

1. hold gas pedal to floor while trying to start. do not pump pedal.
2. holding pedal to floor is how you start a flooded f.i. engine