So i bought a 1986 iroc z28 camaro yesterday and drove it home all was okay next day it rained all day and I covered it up .The next day I came outside in the morning and try to start it but no power so I connect another car to the battery and give it a go.The car has power but when I turn the key it doesn't start and theirs a buzz sound coming from the motor. I'm new to this car and trying to learn please help.

 

sounds like your starter is failing. That is a pretty common issue with these cars but it's easy to replace them.

 

[QUOTE=cmiller2014;6347374]sounds like your starter is failing. That is a pretty common issue with these cars but it's easy to replace them.[/QUOTE
thx ill check it out

 

A bit too fast on the failing starter diagnosis , the buzzing sound is the result of not enough power being applied to the starter's solenoid , which in itself is usually not the starter's fault .

Step one , fully charge the battery . If it will not hold a full charge , it's bad

Step two , with a good and fully charged battery , does the car start ? If yes , put an accurate voltmeter to the battery with it running , looking for around 14 .5 volts , not much higher or lower .
(Since it started fine when you drove it home it's very likely to start with a good & charged battery , and know that most "jumper cables" suck and fail miserably at the task of actually starting an engine in a car with a discharged battery . Notice how lately the manufacturers are calling them "Booster cables" instead of "Jumper cables" ? That's because they damned well know that they can only be used for CHARGING the discharged battery from a live running car , a process of 1/2 hour or more if the recipient battery is merely discharged and not indeed "dead" /defective )

Step three , shut it off and disconnect either one of the battery terminals , either the plus + or the minus - , it doesn't matter which one . Connect a taillight bulb in a pigtail socket between the disconnected battery wire and the battery's terminal with the key off and the doors & trunk closed . If the bulb glows anything more than a barely there red glow in the middle of the filament somethings drawing power when it shouldn't and this could/would explain why the battery was drained overnight . The barely there red glow is proper , with everything shut off the radio and the ECM both draw a tiny amount of power to keep their memory alive , but any kind of normal bulb brightness is bad , indicating excessive power being drawn somewhere when all is supposed to be off .

Happy Troubleshooting ....