2.7 motor won't start I changed the plugs and it

Is the the same engine that you replaced the plugs and wires on ?
Are the plugs getting spark ?

Check your switch that runs to your aternator.make sure is grounded .if not get a sand paper and sand it down.also check the switch that plugs in to the alternator.

Check fuel pressure at motor with a gauge or scan tool data ,
if that is avail & see if it holds when pump is off

You have to change spark plugs every 3 years,change air filter & clean maf sensor once a year

If your combining your explanation of the problem,
then maybe you just have a bad battery

Did you check out the rotor and distributor cap?

i would check and see if spark pluges are firing. you can take one out and plug into spark plug wire then let the bottom of the plug sit on engine and get someone to try to start while you look at the plug to see if there is any fire. if you have no fire or fuel it would be the crankshaft sencer. it could be the timing belt but the motor would sound different turning over then it used to.

try selionoid..bump the neg and positive together with a screwdriver..if it cranks walah go get another selionoid

did the timing belt let go?sounds like it

probly need a tuneup-change plug wires and distributer cap--------clean throttle body and idle control motor---------get a scan and data stream done as an option

Now you have a good battery & a starter that turns over the motor

Have you cycled the key on & off with a fuel pressure gauge on the
fuel rail?

Do you have a fuel filter that isn't over 3 or 4 years old?

Have you checked for spark while cranking ? Use an old plug on the wires,
if you have ignition wires,don't ground the wire without resistance

If you removed the ducting & MAF Sensor it won't start

Tell us what you checked & exactly how that was done.