I think, I frequently write but leaking oil, yeah, this is another story…
Once upon a time, the old O-Ring become very old until he didn’t care about what goes around anymore…
DISCLAIMER: I can not say this is the best or safest way to do. I am not responsible for any thing you damage, or what ever harm you cause to yourself or others. This is how I did it and it worked for me.
Some oily below the distributor? Sometime, this old O-Ring playing tricks on you, until you thought, your head is leaking! (I mean, your engine head). There will be oil around the corner, where the block mate with the head, this is good replacement after you replacing the camshaft plug and VTEC solenoid gasket.
This procedure is specifically for Honda Tec distributor, other brand may have same or different procedure. So, the first step is to remove the 2-P connector from the distributor.
I didn’t remove the spark plug cables for easy installation. Remove three distributor cap bolts.
Marking the related position between distributor and cylinder head, to make sure the ignition timing didn’t out of spec during installation.
Then, remove the distributor mounting bolts, then remove the distributor from the cylinder head. As you could see the picture below, where is the leaking point and O-Ring that responsible for this problem location (external leak). If you just want to change this O-Ring only, ignore the entire procedure below, just make sure everything is clean and install the new O-Ring.
To prevent 180° out of time when install back the distributor end, mark the center shaft and distributor end. Note : The lugs on the end of the distributor and its mating grooves in the camshaft are both offset to eliminate the possibility of installing the distributor 180° out of time.
Turn circlip remove point to the pin hole, flat screw driver is good enough to remove this circlip.
Turn the distributor ignition rotor until you see the screw that hold the rotor, remove the ignition rotor and leak cover.
Remove three screws (cream color circle) that hold the ignition control module (ICM), TDC/CKP/CYP sensors and two screws (black color circle) that hold the ignition coil.
Remove the wires grommet.
Optional : Remove the two last TDC/CKP/CYP sensors for more work space. TheTDC/CKP/CYP sensors have a small bump on the bottom that fits into corresponding holes in the distributor case so that the sensors will only fit in one place and can’t be adjusted.
My oil seal seem ok, there’s no major leak, but, it’s a good practice to change it since it run over 100k.
This is what the entire system look like.
Pull out the oil seal using the flat screw driver, it should be easy.
Cleaning time! I clean using silicone spray. Before:
There are 2 type OEM Honda distributor O-Ring common type. The dealer tell me that OEM Honda distributor O-Ring make from viton material, that why the price is high that normal rubber type (about 4 times!).
Install the new oil seal, make sure the seal seat properly, I using 14mm socket to slowly push it down.
Install back all together reverse of removal, install the new O-Ring, and don’t forget the marking points that I mentioned before or your engine won’t start.
Install the distributor on the cylinder head, don’t forget the ignition timing marking point! That all, wait for the next chapter of the leaking oil story (I hope not!).