Oil pan leak (Page 2/4)
Vintage-Nut AUG 10, 10:16 AM
IMHO

When removing the V6 distributor to replace the O-ring; it is the perfect time to inspect and service other areas if needed....

GM Part Numbers
10477565 - O-Ring, distributor base-to-manifold
10469668 - Screws, ICM (2) {Thread Size: M3.5-0.6 X 19mm}
10497450 - Shaft, main distributor
10482829 – Module, Ignition Control
10495089 - Coil, pick up

Distributor Cap with Brass Contacts
Rotor

And YES - Lube the new distributor O-Ring with engine oil

BTW - I have a V6 Distributor / Full Service "write-up" if you need it........

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Original Owner of a Silver '88 GT
Under 'Production Refurbishment' @ 136k Miles

hunter29 AUG 10, 06:33 PM
Thanks for the part numbers..
Patrick AUG 10, 08:20 PM

Here's a good thread - The better Viton Distributor O-ring
hunter29 AUG 11, 01:24 PM
Thanks Patrick
Vintage-Nut AUG 13, 10:47 AM
BTW

GM 10477565 O-Ring IS "The better Viton Distributor O-ring" and it is the 'tan' colored material which is listed in that thread as ACDELCO Part # 10477565

GM GENUINE 10477565

------------------
Original Owner of a Silver '88 GT
Under 'Production Refurbishment' @ 136k Miles

82-T/A [At Work] AUG 13, 12:03 PM

quote
Originally posted by Vintage-Nut:





Something I noticed when my daughter disassembled her Iron Duke distributor, but the distributor shaft had a spiral groove going up the shaft. Best we could figure, this was to help naturally drive oil up the distributor shaft (or create a vacuum which would suck it up through the ducting past the bushings) for lubrication. It's been a long time since I've disassembled a Fiero V6 distributor, so I don't know they had them also... but I noticed your replacement shaft doesn't have that. Did the original V6 distributor have this as well? I assume GM wouldn't issue something intentionally worse if they didn't think it would matter; however, I question if longevity is a concern in mind for them with replacement parts (since the assumption is to keep the old car running a few more miles, so to speak... rather than the thought of a car being built to last another vehicle lifetime).


[This message has been edited by 82-T/A [At Work] (edited 08-13-2024).]

Vintage-Nut AUG 13, 09:26 PM

quote
82-T/A:
It's been a long time since I've disassembled a Fiero V6 distributor / I noticed your {GM / ACDelco} replacement shaft doesn't have {spiral groove going up the shaft}. Did the original V6 distributor have this {no spiral groove} as well?



YES - My original V6 distributor main shaft and the GM replacement shown above were identical and lacking any spiral groove.....
82-T/A [At Work] AUG 14, 07:49 AM

quote
Originally posted by Vintage-Nut:

YES - My original V6 distributor main shaft and the GM replacement shown above were identical and lacking any spiral groove.....



RGR, thanks!
hunter29 AUG 14, 12:57 PM
Ok so I took a look preparing to do the O ring, Definitely oil under the distributor, However when checking to see if my timing mark is still on the timing gauge I noticed it was wet with oil as well as the (Flywheel ? )

So another leak elsewhere ? or can the distributor oil reach that area ?

thanks
Vintage-Nut AUG 14, 05:27 PM

quote
hunter29:
Definitely oil under the distributor...



Then replace the O-ring and worry about other oil leaks after....

Remove the Distributor from the Engine:

NOTE: Follow the MARK steps below to ensure the correct timing when reinstalling the distributor!

Remove the spark wire from ignition coil to the distributor and all of the spark wires notice their positions.

Remove the distributor cap (7/32" nut driver). Unplug two connectors from the ignition coil. Remove the ignition coil & shield (13mm socket)

Unplug two connectors from the ignition control module. Remove the ICM screws (7/32" nut driver) Unplug the pick-up coil connector from the back of the ICM.

MARK: Rotate the engine until the rotor is pointing roughly 3:00 o’clock (to the plenum) and orient the protruding prong of the rotor to a fixed point on the plenum.
{Use tape with a 'sharpie' mark at the rotor prong)

Remove the bracket/bolt at the base of distributor (15mm socket) WITHOUT moving the distributor base on the manifold

MARK: Make alignment MARKS at the distributor base AND on the manifold (for timing)

Gradually remove the distributor by turning Counterclockwise AND pulling up taking NOTICE as the rotor turns when it STOP TURNING as it is released from the internal gear in the engine and MARK to orient the protruding prong of the rotor to a fixed point on the engine. This third reference point is the position of the rotor prong when reinstalling the distributor back into the engine.

Remove the distributor from engine.

------------------
Original Owner of a Silver '88 GT
Under 'Production Refurbishment' @ 136k Miles