So my idle for my 1986 mustang was acting up so I bought a fuel injector because a dumb friend told me it was my fuel injector so my friend got me one. I tried to replace it but noticed that there was something stuck between the wire for the peddle. I removed and put the fuel injector together but didn't have a washer because the old one was kinda mealted on the injector so I scraped the old one ad place a new washer and connected everything back together. I turned on the car and it was working fine. Idle wasn't acting funny no more. But after 5 minutes lots of smoke from the exhaust started coming out and I checked under the hood and saw there was a leek between the fuel injector. I said what ever and pressed a little gas and it turned off I didn't bother touching it again( as you can read I don't know