Q: I think my Distributor O ring is leaking and can see oil run down from under the Distributor

asked by on

How do I change this O ring . I don't know where timing Mark is to bring #1 piston to TDC prior to removing the cap and Distributor from the engine to make it easy to drop it back in after O ring is replaced.

My car has 131000 miles.
My car has an automatic transmission.

On your ’86 Cadillac Deville, you should be able to find the timing marks down toward the bottom of the water pump. There will be a cylinder looking tube attached to it with numbers on it reading from 0-20. These are degree indicators for ignition timing. If you do not feel comfortable performing this yourself, I recommend having a trained technician, such as one from YourMechanic, replace the distributor O ring for you.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. I think my Distributor O ring is leaking and can see oil run down from under the Distributor

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Hello i have an appt for friday and i just want to make sure that lugnuts comr with the wheel studs because i only have one

Hi there. I have forwarded your question to our service experts who should be able to confirm that the wheel studs will include lug nuts as well for your Cadillac DeVille. They should reply to you soon. Thanks!

Q: No pressure in LF brake line and no oil leak,

In extreme cases, a brake caliper piston can be seized in the caliper bore so even with pressure in the line, the piston might not appear to move. If you request a caliper inspection/diagnostic, a certified mechanic would use gauges...

Q: Oil leak around distributor

This is common in these vehicles. There are two possibilities that come to mind. You could simply have a valve cover that is leaking. The repair is rather simple and requires the gasket to be replaced. The other possibility is...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...