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Remove spark plug tubes

14K views 25 replies 10 participants last post by  Tommy  
#1 ·
How do you remove the spark plug tubes? Do they just pull out or are they threaded? Ive tried getting one of mine out but it seems very tight! No movement at all.

Thanks
 
#8 · (Edited)
fredk said:
put a socket in it that just does fit, clamp onto the outside and pull, why are you taking them out?
Ok ill try that...anything specific to clamp it with? Are we talking hose clamps?

So it is threaded or not?

I'm taking them out on my other engine, thought id replace them all. The back ones are looking a bit grotty.
 
#10 ·
^ Didnt really understand the method ..

Tried again with some slip joint pliers, didnt work. All its doing is crushing the tube at the top and then slipping off.

Someone mentioned drilling a hole through it and using a screw driver to turn it out, but i don't really want to do that.

Hmm. Any other options?
 
#11 ·
I know what he's saying.

Get a piece of pipe thats a little larger in diameter then the spark plug tubes. Slip this piece of pipe over a spark plug tube, thread on a spark plug tube nut against this piece of pipe, push up on this pipe and hope the spark plug tube comes out.

I don't know if it'll help or not, but you can try the double nut method. Tighten 2 nuts against each other, use a breaker bar + socket on the bottom nut.
 
#12 · (Edited)
88 LE said:
I know what he's saying.

Get a piece of pipe thats a little larger in diameter then the spark plug tubes. Slip this piece of pipe over a spark plug tube, thread on a spark plug tube nut against this piece of pipe, push up on this pipe and hope the spark plug tube comes out.

I don't know if it'll help or not, but you can try the double nut method. Tighten 2 nuts against each other, use a breaker bar + socket on the bottom nut.
Yep understand that, however, the spark plug tubes on this motor dont have threaded sections...its just a bare tube...the nuts to hold the cam cover on are screwed onto rods around the edges..so yea..otherwise, the 2 nut idea wouldve been perfect.


 
#15 · (Edited)
One custom special tool to install the tubes may be helpful: obtain 14 mm outside dia. 240 mm long steel rod.
  • Cut, or better, machine threads same as the spark plug size on one end about 25 mm long.
  • Turn the outside diameter starting on the other end down to .5 inch on the lenght of 5 inches.
  • Drill 1/4 inch hole through the shaft about 5/8 in from the end on the portion of .5 in diameter.
  • Machine 1/2-20 thread on turned diameter.
  • Thread the bigger dia. of the tool into the spark plug hole, then insert the spark plug tube into its nest. Make sure it is not crooked.
  • Put thick 1/2 inch large washer over tube, then grease 1/2-20 nut and thread it over washer.
  • Insert long allen key into the cross drilled hole of 1/4 in. dia and hold the rod to prevent turning.
  • Then, place wrench on the nut and slowly turn it down until tube is pressed. The tricky part as to keep the tube straight and the threads well lubricated. Big note: this method works only on pressed tubes.
  • The dimensions are general recommendation, and can be specifically adjusted by the user, with regards to machine tools, skills etc.
 
#16 ·
#17 ·
To pull the tube out you may use a device that is similar to pulling bridge with 30 mm hole in the center. The legs of the bridge are placed on the edges cylinder head. Tube nut is used to pull the tube. But all my tool recommendation are only cost effective if used on large work volume and even dealer usually does not use anything like these.
 
#18 ·
Thanks guys, Doc J, appreciate the write up there on installation!..very informative!
88 yea i saw that, looks like it would fit, i think it simple spreads outwards and then u can turn it out, but yea, cost it a bit high.
I could just leave it..and then get a head place to remove/replace em when i get them done, but.. i wanna do it myself hahaha (atleast try anyway)

Ill try on the weekend, using a socket inside the tube, and a big arse vice grip to squeeze it...might be able to get it that way. If not, then i reckon ill just leave it for the head place.

Ill let you know how it goes!
 
#19 ·
Image

Lisle sells this Spark Plug Tube Remover at $15 -$20.
Detailed Description 51870 Removes Toyota spark plug tubes.
This adjustable tool removes spark plug tubes that leak oil.
Spark plug tubes can be removed and reinstalled in minutes without removing the valve cover and intake plenum.
Includes:
51870 Spark plug tube remover 51880 Body 51900 Wedge 51910 Bolt
 
#22 ·
ok, heres the straight poop, if you dont use the toyota thingie you will probably bugger them up worse than they already are but do this, put a kinda tight fitting socket into it and grip the outside with some monster pliars and pull like hell, you are probably better off getting new ones because the old ones will be all beat up
 
#23 ·
Doctor J said:
One custom special tool to install the tubes may be helpful: obtain 14 mm outside dia. 240 mm long steel rod.
  • Cut, or better, machine threads same as the spark plug size on one end about 25 mm long.
  • Turn the outside diameter starting on the other end down to .5 inch on the lenght of 5 inches.
  • Drill 1/4 inch hole through the shaft about 5/8 in from the end on the portion of .5 in diameter.
  • Machine 1/2-20 thread on turned diameter.
  • Thread the bigger dia. of the tool into the spark plug hole, then insert the spark plug tube into its nest. Make sure it is not crooked.
  • Put thick 1/2 inch large washer over tube, then grease 1/2-20 nut and thread it over washer.
  • Insert long allen key into the cross drilled hole of 1/4 in. dia and hold the rod to prevent turning.
  • Then, place wrench on the nut and slowly turn it down until tube is pressed. The tricky part as to keep the tube straight and the threads well lubricated. Big note: this method works only on pressed tubes.
  • The dimensions are general recommendation, and can be specifically adjusted by the user, with regards to machine tools, skills etc.
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