Spark plug on first cylinder will not screw in on my 2000 Ford Explorer with the v6 4.0 SOHC WHAT SHOULD I DO?

Spark plug on first cylinder will not screw in on my 2000 Ford Explorer with the v6 4.0 SOHC WHAT SHOULD I DO?

You have to be careful to get the threads started right with the plug straight in the hole. A good sparkplug wrench hel[ps. With aluminum heads, it is easy to damage the threads if you get it crossthreaded. If the threads are already ruined, you will need professional help

Check the pitch of the threads or try unscrew a spark plug from the other spot and see if it fits into the current one

Re tap the threads. You may need a heli - coil if it was cross threaded.