2003 H2. Spark plug replacement. Do I just pull on the metal tube covering the spark plug to get access to the spark plug? I'm afraid I'll damage the wire if I pull on the wire. Is there a tool I can use on the metal tube?
An expert who has achieved level 3 by getting 1000 points
An expert that got 10 achievements.
An expert that got 5 achievements.
An expert whose answer got voted for 500 times.
Re: How do I remove the spark plug wires?
The metal tube stays in the heads. They make a special pair of pliers to remove the spark plug boots from the spark plug. You should replace the wires at the same time as the plugs on those models anyway though.
A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones). click here to download the app (for users in the US for now) and get all the help you need. Good luck!
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Buy valve cover gasket kit with plug tube seals .. remove valve cover.. Clean everything .. replace seals replace valve cover gasket and reinstall valve cover. Clean sparkplug wires connectors.. Try Rockauto .com for this part about $25. about 1/2 price of local auto parts store. Tighten Valve cover screws to correct torque specs.. for best job.
Starting on the pasenger side. Remove the intake tube running from the air filter box to the throttle body and disconnect enough tubes to swing it out of the way. The sparkplugs are down below the small coils you see at the end of the sparkplug wires. With a 10mm socket remove bolt holding the coil, disconnect the plug at the top of the coil by squeezing it at the top and pulling straight off the coils.
Pull the coil straight up. there will be about a 6 inch tube that connects to the top of the spark plug when inserted. You will need a 5/8 sparkplug socket and about 2 feet of extensions to make it easy on yourself. Insert the spark plug socket and extensions down the hole you removed the coils with the tube from and remove and replace the sparkplug. Reinstall your coil onto the engine and move to the next one until you have replaced all the plugs on the passenger side.
Make sure you reconnect all the plugs to the coils, hoses to the intake tube and reinstall your intake tube. The drivers side is a little easier. Pop the spark plug wires from their plastic holders to free enough slack to be able to pull your sparkplug wires out of the block. For the plug closest to the front of the engine you will need to remove the 10mm bolt holding the ground wires to the intake manifold to be able to free enough space for removing the plug.
For the middle plug you will need to remove the 10mm bolt holding the bracket that is holding one of the throttle cables at the top of the intake manifold. For the rear plug just pop the flexible hose that runs behind the black metal bracket straight up out of its clip and push it out of the way along with any other hoses that run through this area. Pull the spark plug wire from its place by pulling straight up just like with the coils. there will also be about a 6 inch tube running down to the spark plug at the bottom of these plugs.
Remove and replace the plugs same as before. make sure you reconnect all your hoses and wires to their previous locations. Doublecheck to make sure you reconnect all the ground wires/ brackets. Also you will need to use " twin ground electrode plugs" (see sticker on front of your plastic timing belt cover? to the right of the radiator hose).
when you open the hood on your H2 the is a cover over the top of the motor. to remove it you have to remove the oil filler cap and pull out the dip stick. when those are removed you should be able to remove the cover by pulling up on the front edge. after that is out of the way the ignition coils are right on top of the spark plugs and are usually held in with 2 bolts per each coil pack. unbolt the coil pack and pull on the coil and it should pull out of the hole( may be stubborn) them find out what size the plugs are and the plugs are in the bottom of the hole
There are no spark plug wires on the 2000-up Northstar engines. They use coil on plug design. First remove the engine service cover.(The Pretty plastic peice that has the Cadillac symbol on it) Then disconnect the coil connector which sits to the right of the coil and should just snap off by hand. Next If you remove the screws that holds the coil pack (8 screws) to the top of the cam covers, you will see 4 black round rubber boots that sit on top of the plugs. Pull the boots free to expose the plugs. The tops of the spark plugs sit directly underneath