I just changed the spark plugs, and now when I try to start my truck it makes awful popping sounds, with a puff of smoke. I tried to make sure I didn%26#039;t get too much debris in the engine, but I%26#039;m hoping that%26#039;s only it. I%26#039;m pretty confident that I didn%26#039;t mix up any of the spark plug leads, and I started it earlier today just fine.|||did you make sure they was the same reach and everything,because other than them not being gaped right it should have run pretty good,go back over the firing order those are easy to cross up,one plug wire crossed will cause this,and you may have did like i did once, i bought a bad set of spark plugs,people say it cant happen,but it can,i bought a new set of ac delco plugs for a v-6 engine,and 2 of them was dead as a door nail and it made my truck back fire real bad,id go back over it and check it good,anythings possible,good luck with it.|||you have either a loose spark plug wire, its shorting to ground or its a spark jumping around a bad plug. might have loosened up|||Sounds like you have the plug wires mixed up. You need to go back and look at the manual and make sure you have them in the right spot. Also check the gap in your plugs.|||When you change new spark plugs, you should ALWAYS calibrate the new ones to whatever specifications your truck has. There%26#039;s usually a sticker under the hood that says the year, engine size, and the spark plug gap, they%26#039;re usually around 0.045%26quot;, and you will need a spark plug gapper to set them.|||You definitely have your plug wires crossed up. In the future only change one plug at a time removing and replacing each wire as you go.|||double check your wiring order,|||Mostly it could be a problem of any leakage of current,please check your sparkplug cables and also the correct connection..
All the best
Nataraj
bahrain|||Sounds like you%26#039;ve got a few plug wires reversed check your firing order and make sure all wires are on the right plugs. **** luck!
