How to replace spark plugs - Jetta
Estimated time: 30 minutes
Are you noticing a slight misfire upon idle? chances are if you haven't replaced your spark plugs in years they probably need replacing. Today I'll show you how to do it.
- 5/8" Spark plug socket
- 3/8" Socket + extension
- Vice grips
- Philips screwdriver
- Spark plug gap tool (optional)
- OBD2 Reader (optional)
- Five Autolite spark plugs #5224 (4$ each)
Important to note:
Most spark plugs come pre-gapped but if they don't come pre gapped I'll provide a link with a guide on how to gap them yourself
Step 1 (getting access to the plugs)
Break free the engine cover by pulling towards you (don’t be afraid to be aggressive)
Remove the maf sensor
Use vice grips to squeeze the O clamp and seperate the intake pipe from the maf sensor
Using a Philips screwdriver, loosen and remove the two screws that hold the intake vent
now that the big hunk of plastic is removed and out of the way. Towards the back of the engine bay disconnect the secondary air injection check valve (pliers may be necessary)
and remove the vacuum hose connected to the valve cover.
This step it’s important to use caution.
Gently lift up and pull all 5 of the coil plugs out from the cylinder head.
note: Remove coil plugs from cylinder 1-5 to prevent any damage to the electrical cable or plug
Take your 5/8” spark plug socket with your 3/8 ratchet + extension and gently break free the seal of the plug to the block (counter-clockwise)
Remove all 5 spark plugs
I like to apply a little anti-seize to my spark plugs just a dab is all you need.
Now install all 5 spark plugs. Be sure not to over tighten.
I don’t know exact torque specs but just hand snug like this ( gripping the center of the ratchet head)
Step 6 (putting everything back together)
Now that all 5 plugs are hand tight in the head make sure you don’t forget to plug In the spark plug wires!
Now the wires are back in make sure to plug in both the:
- Secondary air injection check valve
- vacuum hose connected to the valve cover
Now put the cover back on the top of the engine following step 1 backwards.
Step 7 (clearing the check engine light code - optional)
Plug a obd2 reader into the diagnostic plug (located near the brake pedal on the floor) and clear the codes