Best Answer

If the engine is the 3.1L V-6, the answer may be a simple one depending on where you notice the oil leaking. 1. If it is coming down the back side of the engine mainly and leaving marks toward the middle of the car, it has a very common problem, GM assembled the cars with an improperly designed seal around the oil pump driver. This driver mounts in the block where the distributor would normally go, however they changed the system to a DIS ignition (distributorless) however the distributor in most if not all GM motors not only controls spark but links the camshaft to the oil pump. So by replacing the distributor the driver had to be created. The fix is somewhat simple if you are slightly inclined and you have a larger toolkit at your house. You need to remove the air duct, throttle body, EGR valve and upper plentum. Once all these parts are removed you should be able to see a different color round part below, near where the transmission mounts to the engine block. There is one hex bolt that holds a small wedge on the round (about 2" diameter) top of the pump driver. You remove the hex bolt, the wedge and pull the driver straight up and out, you might need to pry up with a screwdriver first to get it loose. You will need to replace the O ring that is seated on the unit you removed. Assembly is opposite of removal and it should solve your problem. 2. another more simple problem if it is mostly leaking from the front is the front pressure sending unit, it should be located on the front of the block to the driver's side of the oil filter. If you remove the wire that goes into it, you will notice oil on the inside of the plug if it is bad. You can purchase this at a parts store for a small price and it is very simple to replace with a 1 1/8" socket if i remember correctly. Both of the above are more annoying causes of leaks if you have checked the obvious such as loose oil filter, loose oil plug, or leaking valve cover gaskets.

User Avatar

Wiki User

โˆ™ 2007-05-02 01:14:03
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: What are the possible problems when oil is leaking into my 1995 Chevy lumina engine?
Write your answer...
Related questions

Can you exchange a 1996 motor to a 1999 motor for a Chevy Lumina 3.1 engine without it giving you electrical problems Will they be Interchangable?

what is the spark plug gap for a 98 Chevy lumina sedan 3.1Liter engine

Why is Coolant leaking on the lower passenger side on my 96 lumina?

most likely heater core leaking

There seem to be some type of plug on the top of your 91 3.1 lumina that you think is leaking any info would be appreciated?

Please clarify your question. Is the plug on top of the engine or the car? Is it leaking water, gasoline, or oil?

What is the firing order for 3.1l engine 91 Chevy lumina apv?

When troubleshooting problems within an engine, it can help to know the firing order. The firing order of a 1991 Chevy Lumina 3.1L is 1-2-3-4-5-6.

Will a transmission out of a 96 lumina work in a 95 lumina they both have the 3100 engine?


MY 1996 Lumina is leaking antifrezze and you dont know where it would be coming from it looks like its coming from somewhere around the thermostat?

Check the head gasket and the intake, both are common problems on that car

When starting my Chevy lumina apv engine will run as long as starter is engaged but then dies when I let the key off?

Had same problem with My 91 Lumina APV. Changed Starter Relay. Haven't had any problems sence.

What could be leaking on the drivers side floor board on a 1995 Chevy Lumina?

Heater core, windshield, or a clogged cowl drain line. If the liquid tastes sweet it is coolant and the heater core is leaking. Heater core must be replaced. If not, it is one of the other 2 problems.

Is my water pump going out in my 1996 Chevy lumina?

If the pump is leaking or noisy then assume it is failing.

Why does a 1997 Chevy Lumina Ls have coolant in the oil?

Sounds like head gasket is leaking

Where is oxygen sensor on lumina 3.1 engine 1990?

behind the engine

Why will antifreeze be coming out of firewall on 93 lumina 3.1 euro?

you likely have a leaking heater core. Is this on the inside of the vehicle? if so then it defintately is a leaking heater core

My moms 1991 Lumina LS 3100 v6 engine is overheating within 10 block every time she starts the car It is leaking water not coolant and the thermostat was just replaced Any suggestions?

3.1L V6 are famous for bad intake manifold gaskets that are made of plastic. See if you can find the source of the leak and how bad. Too much leaking could cause overheating problems. A bad water pump will also cause problems. btw, I blew my engine by not getting the intake manifold gasket repaired in a timely fashion. IF you have the money I would get it changed to avoid problems down the road.

Is the radiator on a 1995 Chevy Lumina and a 1997 Lumina the same?

depends on the engine size and the transmission type.

Why is 1997 Chevy lumina leaking water behind motor?

i had this problem the intake manifol gasket is blowed

Where do I find a 1997 lumina engine diagram?

Having the diagram of the engine to the car being driven can come in handy. A person can find the 1997 Chevy Lumina Engine diagram in the maintenance manual.

Can a 3.4 liter engine transmission from a car fit into a 96 lumina minivan?

yes if its the not the DOHC from the Lumina Z34

Where is the engine block plug on a 96' Lumina?

There is no engine block drain plug on a 1996 Chevy Lumina. You drain from the radiator using the plastic plug at the bottom.

Where to find knock sensor in a 1997 Chevy Lumina?

The knock sensor, in your 1997 Chevrolet Lumina, can be found on the front of the engine. The knock sensor is near the top of the engine.

Why is the oil pump shaft leaking 95 Chevy Lumina?

Oil pump driveshaft (also referred to as distributor) o-ring is bad. Replace, and oil will stop leaking there.

Will a 99 Buick century 231 engine fit into a 96 Chevy lumina?

The 99 Buick Century 231 engine will fit into a 96 Chevy lumina with a little fabrication.

What does it mean if your security light stays lit when the engine is running on a 96 lumina 3.1?

my 97 lumina has the same problem. the user manual says that the security system is not working properly. it will not cause problems, but the system should be checked by a technician. hope this puts you to rest, it did me....:)

Where is the starter at on a 1992 Chevy Lumina apv?

under the engine

Freeze plugs on a 96 lumina?

Freeze plugs in a 96 Lumina are located at several places on the engine block. They are designed to expand and burst in a freeze instead of the engine being damaged.

Will a 1994 Chevy lumina Z34 3.7 liter fit into a 1993 Chevy lumina that had a 3.4 liter?

No, Chevy Lumina Z34 ever came with a 3.7L engine. So probably not.....