Engine - Are the spark plug tube seals serviceable? | Ford Escort Owners Association (FEOA)
  1. Wash your hands and do not touch your face, keep it safe and clean. Long live Feoa!

Engine Are the spark plug tube seals serviceable?

Discussion in 'Tech & Repair' started by TheDingus, Oct 30, 2019.

  1. TheDingus

    TheDingus FEOA Member

    Messages:
    8
    Likes Received:
    4
    Trophy Points:
    3
    Location:
    Earth
    So I was changing the spark plugs the other day on my car as I had a quite substantial missfire/ backfire issue and that was the cheapest place to start. The plugs looked terrible for 1 and the second cylinder plug was completely covered in oil which I know is either from the valve cover gasket not sealing or the spark plug tune gasket has failed. I've been searching everywhere to see if those seals are replaceable and haven't found anything so I'm wondering if they are even serviceable I just got the car and haven't taken the valve cover off yet to see I'd rather replace both while I have the cover off if at all possible and if it's not serviceable I have another idea to fix it that I've done on a past vehicle that worked like a charm with some RVT silicone. So my question is does anyone know if you can remove the spark plug tube seals, what they are made out of ( are they inset plastic or silicone / rubber ) and where I might be able to find replacements as every parts store I checked online said their seals won't won't fit the car ( I've only done compatibility checking haven't called the store yet) any help is greatly appreciated!!!
  2. Joey_Twowagons

    Joey_Twowagons FEOA Member

    Messages:
    2,435
    Likes Received:
    1,133
    Trophy Points:
    413
    Location:
    Vancouver Island, Canada
  3. denisond3

    denisond3 Moderator Staff Member

    Messages:
    10,080
    Likes Received:
    2,803
    Trophy Points:
    563
    Location:
    south TX or northern VA
    I presume your Escort is a DOHC; the SOHC engines dont have this problem. The seals between the valve cover - to head, usually come with a valve job or engine rebuild gasket set. The old seals should just peel off. They are made of some durable rubber compound, which could be approximated by using Permatex RTV. My favorite one is their "ultra black" product. You apply it liberally, after cleaning off all the old gasket and oil, and give it overnight to cure before continuing to use the engine.
    I dont know what your plugs looked like, but the oily aspect happened when you took the plugs out. Cleaning the oil off with solvent (kerosene or old gasoline or naptha) and putting them back into the engine would work. And for that matter, you can sort of ignore the amount of oil collecting around the plug. That would have to build up to where the oil was touching the spark plug wire before it would interfere with ignition.

    If you dont know how old the spark plugs and plug wires are, its likely time to replace them.
    austin86 and zzyzzx like this.
  4. marclar

    marclar Administrator Staff Member

    Messages:
    8,966
    Likes Received:
    548
    Trophy Points:
    413
    Location:
    seabeck WA
    tube seals should come in a valve cover set.
  5. TheDingus

    TheDingus FEOA Member

    Messages:
    8
    Likes Received:
    4
    Trophy Points:
    3
    Location:
    Earth
    I just went to replace the valve vocer gasket the other day and come to find out it's the valve cover gasket that's supposed to keep the oil put of those tubes there's really no spark plug tune seal that you'd see on other cars. Didn't even end up having to replace the valve cover gasket the bolts were just loose and letting oil get in tightened everything down and it's good now. Thanks for the help though was trying to have some insight before tearing everything apart but sometimes you don't know until you get into it yourself.
    denisond3 likes this.

Share This Page