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In this video we do a basic ignition tune up on a Subaru 2.5 EJ engine. It consists of just replacing the plugs and plug wire. It is a really simple task and can be done easy at home with the correct tools. -Enjoy!
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46 thoughts on “Subaru ej25 – basic ignition tune-up / plugs and wires”
  1. Avataaar/Circle Created with python_avatars Micah Harman says:

    A new battery terminal is under 20 bucks from Subaru it's one nut store simple to change no reason to use that stupid style of battery terminal

  2. Avataaar/Circle Created with python_avatars FRANK HOPPER says:

    Good job

  3. Avataaar/Circle Created with python_avatars Daubinks says:

    Best spark plug video ever

  4. Avataaar/Circle Created with python_avatars Brad Cass says:

    The plug warning is because their crap fails often and if you shouldn't put your safety in their quality control

  5. Avataaar/Circle Created with python_avatars paul ellis says:

    we miss Hanna

  6. Avataaar/Circle Created with python_avatars Alan Robison says:

    I always used a piece of rubber tubing about 6 inches long to get my spark plugs started back in the day.

  7. Avataaar/Circle Created with python_avatars Dr. Craig D. Smith says:

    LMFAO, "If I was Ivan or Russian"…No parts required fix! All take Vodka shots!

  8. Avataaar/Circle Created with python_avatars lavon roads says:

    I have heard you mention Champion spark plugs. my Father and I have had terrible experiences with Champion plugs in the passed.. DAD barely made it back home. me i could not find out why my Buick wouldn't start…But When I pulled off the spark plug Boot I knew what the problem was.. put in AC's and problem fixed… I even done an expertise.. … I put in old 50,000 mile Autolite's in my 68 charger i built. .and done a test run. .then put in a new set of Champions and ran again. .I noticed a notable loss of HP with the Champions…threw them in the trash and got new Autolite….i wish it was easier to buy plugs for small engines.. everything is better than Champion plug..

  9. Avataaar/Circle Created with python_avatars B Souza says:

    If it doesn’t click it’s not legit 😡

  10. Avataaar/Circle Created with python_avatars Gary Gruber says:

    I have to yank the battery on my 2009 Forester to access the plugs on the driver's side. First time I changed the plugs: 1.5 hours. I can do it in 40 minutes now. Two small extensions and a ratchet. It is a tight squeeze regardless of which tools you use.

  11. Avataaar/Circle Created with python_avatars Ad Nast says:

    How would you test individual high voltage coil plugs?

  12. Avataaar/Circle Created with python_avatars KEN MCCORMICK says:

    That is what I was told, to decrease the carbon track misfire.

  13. Avataaar/Circle Created with python_avatars Mark G says:

    I bet people ask you to sing tenor…. Ten or twelve miles away.

  14. Avataaar/Circle Created with python_avatars richard3141592638 says:

    another free tip friday – don't take out the spark plug if tube is full of oil – love it

  15. Avataaar/Circle Created with python_avatars Paublus Americanus AMERICANUS says:

    I thought Hannah was Eastern European rather than Hispanic but now I see Hispanic all the way. Oh kay

  16. Avataaar/Circle Created with python_avatars Paublus Americanus AMERICANUS says:

    If'n I had a Fawd truck that was a few years old. You know those Fawd's that had the spark plugs that were impossible to remove and seize into the luninus metal heads I would put copper coat on the threads of the plug to hell with what NGK recommends.

  17. Avataaar/Circle Created with python_avatars Gary Alford says:

    The 3.0 motors really suck to change plugs !!

  18. Avataaar/Circle Created with python_avatars Robert Gary says:

    Idk. Realistically one of those plugs would be seized.

  19. Avataaar/Circle Created with python_avatars Benjamin Lagace says:

    Is that a dewalt batt on a snap on tool 🤔

  20. Avataaar/Circle Created with python_avatars Terry Thurman says:

    Awesome videos very informative. Please get your self a better light for you and us. Thank you

  21. Avataaar/Circle Created with python_avatars Avery Wellsand says:

    Not for use in an aircraft

  22. Avataaar/Circle Created with python_avatars Charles Tredway says:

    And know when to run.

  23. Avataaar/Circle Created with python_avatars Raymond Jacobs says:

    Looks like Eric had four of a kind

  24. Avataaar/Circle Created with python_avatars oscar Papuchon says:

    Thanks

  25. Avataaar/Circle Created with python_avatars chevyengine307 says:

    I use a piece of rubber hose

  26. Avataaar/Circle Created with python_avatars Craig Slaunwhite says:

    RIP Kenny Rogers
    Know when to hold

  27. Avataaar/Circle Created with python_avatars Jesse Zaragoza says:

    Las pinsas medianas

  28. Avataaar/Circle Created with python_avatars Nikolai Romanov says:

    The ceramic rings are made for reducing voltage. The technology was taking from high power lines when it rains or ice build up the voltage gets reduced if it runs thru the ring compare to a straight line. There is a formula for that – physics. Don't remember the formula it was 35 years ago.

  29. Avataaar/Circle Created with python_avatars Joseph Erhardt says:

    Ages ago, I did a mini tune up on my (then) gf's 1971 LTD–basically replacing plugs and wires and distributor cap to get it to run decently enough to get it to a garage for other work and save a tow. I knew enough to exactly replace the wires one by one and plug them into the new cap in exactly the same spot as the old cap (my mechanical abilities were limited). However, when I finally went to mount the distributor cap, I found that Ford had polarity-notched the cap in such a way to make it go in only one way–despite the fact that it was 180-degree symmetric (in other words, the plug impulses came straight through the cap without any logic or re-routing). I can see notching the cap so that it could only go in one of two (or even 4) ways, but this was overdesign. So I carefully removed the plugs from the new cap and reconnected them to the old cap, then rotated the new cap, and then moved the wires from the old cap to the new one. Totally nuts. Also, on this car, the windshield wiper squirt nozzles came in "left" and "right." Why? No reason to not to have just one nozzle type. Doofus. There were other things about that car that were similarly dubious. And, of course, it had the infamous Ford steering gear box wander. I drove a 1961 Fairlane with about 6 inches of play in the wheel. The 71 LTD had about the same. My (by then) wife got a 76 LTD later with the same problem, and we briefly had an 84 Ford with the same issue. At a time when just about every other car manufacturer built cars that went where you pointed them, Ford STILL hadn't gotten the message. What rot.
    Q: Does anyone know what year Ford FINALLY had steering that properly pointed the car? I'm curious.

  30. Avataaar/Circle Created with python_avatars Donald Venema says:

    Excellent video I have a 2025 Subaru with 37,000 and a intermittent rough idle, I will check the plugs.

  31. Avataaar/Circle Created with python_avatars Larry Fry says:

    Would love to watch you correctly replace that battery cable clamp.

  32. Avataaar/Circle Created with python_avatars Budster70 says:

    my employer makes gas tanks and mufflers and exhaust for Subaru

  33. Avataaar/Circle Created with python_avatars Michael Merta says:

    Where is Hana going? Great tune up.

  34. Avataaar/Circle Created with python_avatars Jc P says:

    Spark plug ribbin' only works with the proper lube, it's all about the lube ….

  35. Avataaar/Circle Created with python_avatars MrSubaru1387 says:

    Correct, NEVER use anti-seize on Subaru/NGK spark plugs.

  36. Avataaar/Circle Created with python_avatars Joe's Garage says:

    I own 2 h-type Subarus and my Rotator ratchet is handy for this. My Justys on the other hand. Pliers work just fine lol.

  37. Avataaar/Circle Created with python_avatars John Beaudoin says:

    I notice you don't use dielectric grease on plug wires, harnesses, etc. Can you explain why?

  38. Avataaar/Circle Created with python_avatars Puder McGavin says:

    Do not use anti seize on nickel coated plugs you can but nobody likes anti seize cuz if you see it it's already over anything you touch the rest of your day smh

  39. Avataaar/Circle Created with python_avatars Chris Clark says:

    If you don't have a spark plug installer tool or an old boot you can use a piece of 3/8 hose, it's what I've always used.

  40. Avataaar/Circle Created with python_avatars fins59 says:

    Glad I watched this, as I like to DIY it makes me happy I bought a Mitsubishi 🙂

  41. Avataaar/Circle Created with python_avatars Mexican Cervera says:

    enmedio

  42. Avataaar/Circle Created with python_avatars Greeks Garage says:

    My spark plug tool is a piece of large vacuum line

  43. Avataaar/Circle Created with python_avatars hatfez says:

    Do you only work on old vehicles? Always 1994 ~2007! Doesn't anyone drive newer cars in your area?

  44. Avataaar/Circle Created with python_avatars Brian Hind says:

    Mr. "O" you are correct in that the ribs on the insulator on the plugs is to increase the voltage potential required to discharge to ground.

  45. Avataaar/Circle Created with python_avatars Ion Racer says:

    Shitbarus… Only good thing they ever did was put cool exhausts on the wrx's

  46. Avataaar/Circle Created with python_avatars Hola! John Rodrigues says:

    What they're telling you is do not use the spark plug in an ultralight or an airplane. It's not faa-certified.

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