12-10-2009, 12:31 PM #1
Accidently Cross Threading Spark Plugs
Can anyone offer some advice on how to avoid accidently cross threading when putting in a new spark plug? It's my first time replacing the plugs on my RXT and I want to make sure I don't screw it up. Also, how tightly should I screw the plugs in?
I'm using a socket wrench and a regular metal spark plug socket.
12-10-2009, 12:47 PM #2
- Join Date
- May 2006
Put the spark plug in the end of the Coil, Insert into teh head and turn the plug in by hand until it's seated. It should go in very easy with little resistance.
If you have a spark plug socket with the rubber inside to hold the plug, use it and an extension and again use your fingers to tread the plug in all the way until it seats.
Then attach the ratchet to tighten the last turn.
Good idea is a little anitseize on the plug threads to help when changing next time.
12-10-2009, 12:47 PM #3
I use a tad bit of anti-seize on each plug and then use a coil to install plug finger tight first. I then just snug down the plug just a bit.
12-10-2009, 12:52 PM #4
Thanks for the tips. I've never worked with anti-seize, do you just rub a little of it on the spark plug threads?
12-10-2009, 01:59 PM #5
12-10-2009, 04:24 PM #6
- Join Date
- Sep 2009
I have been using anti-seize on spark plug threads into aluminum heads for 30 years. I just put a small dab on the side of the threads, and use my left index finger to spread it into the threads. But I only then hold the insulator end of the plug with my right hand, with latex gloves on, for a very good reason: Most anti-seize greases are conductive at high voltages. DON'T get any anti seize on the insulator of the spark plug!
I make it a general practice to never touch spark plug insulators with bare hands, let alone getting anti-seize on them.....
12-10-2009, 06:40 PM #7
I use a long extention with a spark plug socket and start it by hand. Also IMO its best to change the plugs when the motor is cool, addin cold plugs into a hot motor there will be a greater chance of stripping it. I had a 95 saturn back in the day when i knew nothing about cars. well it was running like shit so pulled the plugs and tryed to put the new ones in. well couldnt get it started for the life of me. So i gave up and went in side watched TV for a bit then I back to work on it and it went right in. So from now on if possible i alway let the motor's cool befor doing a plug change.
12-10-2009, 06:44 PM #8
use sense of feel when putting in plugs with an extension and socket by hand.
it should seat and twirl in nice and easy until it bottoms out on the head.
then just 1/4 turn with the wrench to make them tight.
put a little dielectric grease inside the coil rubber boot so it slides onto the ceramic plug insulator real easy.
12-10-2009, 06:45 PM #9
12-10-2009, 07:23 PM #10
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