DIY Throttle Body Removal to get at rear spark plugs
#1
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DIY Throttle Body Removal to get at rear spark plugs
One of the most painful aspects of doing the spark plugs are the rear plugs as I did in this thread, https://www.clublexus.com/forums/sho...d.php?t=264967
A few of you I have seen have taken the steps to remove part of the throttle body (as I am about to show) in order to get better at them.
You will need:
A ratchet set with a 10mm and 12mm extension (both a long/short for the 12mm and a short one for the 10mm, make them as short as possible). You will also need a 10mm wrench.
I will edit my spark plugs DIY and add a link to this particular thread.
You can start from this point of view (I have no airbox).
A few of you I have seen have taken the steps to remove part of the throttle body (as I am about to show) in order to get better at them.
You will need:
A ratchet set with a 10mm and 12mm extension (both a long/short for the 12mm and a short one for the 10mm, make them as short as possible). You will also need a 10mm wrench.
I will edit my spark plugs DIY and add a link to this particular thread.
You can start from this point of view (I have no airbox).
Last edited by Lexmex; 07-01-07 at 05:25 PM.
#4
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Then time to remove the two baffles from the throttle body. Here you can use a screwdriver, 10mm ratchet, though it is also possible to use a 10mm wrench as shown.
Last edited by Lexmex; 09-16-08 at 10:29 AM.
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#8
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Next step is to prepare the 12mm ratchet with extension. I actually had two, one as shown and one that had a thinner width on its extension (as shown in the next photo). The thicker in terms of the circumference of the extension the better.
#11
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The next one is underneath and you can stick the extension through this area as shown.
On a side note, not the dirty part on the left, this is where most of the oil/gunk that comes through that crankshaft vent hose goes...back into the combustion. Disgusting but part of the design.
On a side note, not the dirty part on the left, this is where most of the oil/gunk that comes through that crankshaft vent hose goes...back into the combustion. Disgusting but part of the design.
#13
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I recommend grabbing the nut by putting your hand in with your palm facing the driver's side of the vehicle and carefully unscrewing the remainder by hand. Otherwise, if you are lucky you can just go looking underneath your RX300 for the nut if it dropped or if unlucky prepare to go fishing on the back side of the engine with a flashlight for it.
Note that the throttle body begins to become separated from the intake manifold.
Note that the throttle body begins to become separated from the intake manifold.
#14
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For some of you that little opening might be enough to get at the rear plugs (I don't need any opening at all, but for others, it might be difficult).
Thus, comes the next step that is to locate this 10mm bolt circled in blue.
Thus, comes the next step that is to locate this 10mm bolt circled in blue.
#15
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Used 10mm short extension on the ratchet. I recommend putting the extension on the bolt first and then connecting the ratchet to the extension. After you have gotten it loose to the point where you can unscrew it by hand, do so, because there is not much room to move the ratchet around, no matter how big the extension is (reason for it being as short as possible).