What causes an oil leak in a Porsche 911?
A failing air oil separator (aos) is the likely cause of rear main seal failure and oil leaks, as it is in other VAG cars. Crankcase vacuum exceeds the normal range in the engine under heavy acceleration and sucks in air damaging the rear main seal.
What causes smoke at the start of a Porsche 911?
The smoke at startup can also be caused by a air oil separator (AOS) that is going bad but not completely failed yet. The M96 and M97 engines are famed for cylinder scoring – deep gauges in the cylinder liner, usually associated with a knocking noise and eventually catastrophic engine failure.
Why is the Check Engine light back on on my Porsche 911?
The fault codes will suggest faulty O2 sensors. This results in many folks replacing the front O2 sensors in the hopes of solving the problem, only to discover that within a few hundred miles the check engine light is back on. The problem is actually caused by the MAF failing and by owners blindly believing the reported engine faults.
What causes a Porsche Cayman to start smoking?
Worn and leaking fuel injectors cause fuel to sit in the intake path while the car is parked. The fuel leaking is not enough to cause starting problems, but it can be responsible for the smoke and wear in the cylinders – the excessive fuel heading into the cylinders washes oil off the cylinder walls causing wear on the piston rings and liners.
Are there any mechanical problems with my Porsche 911?
Listed below are Porsche 911 common mechanical problems with their likely resolutions. These are the most frequent 911 problems diagnosed by our repair shops over the years. An accurate diagnosis of an issue by a Porsche mechanic typically saves you time and money – see our guide to local independent Porsche repair shops that can help.
Is the fuel line vent valve on a Porsche 997 Carrera?
If you have a 2005 or later 997 Carrera, Porsche has redesigned the tank ventilation system and eliminated many of the components and lines including the fuel line vent valve. If playback doesn’t begin shortly, try restarting your device. Videos you watch may be added to the TV’s watch history and influence TV recommendations.
The smoke at startup can also be caused by a air oil separator (AOS) that is going bad but not completely failed yet. The M96 and M97 engines are famed for cylinder scoring – deep gauges in the cylinder liner, usually associated with a knocking noise and eventually catastrophic engine failure.
Why does my Porsche 911 have oil starvation problems?
As a result of the lower oil holding capacity and other factors, the M96/M97 engines tend to suffer more from oil starvation problems, particularly during high performance driving. There are a few things you can do to protect against oil starvation problems. Firstly, be sure that your oil level is always at the high-level mark of your dipstick.
Why does my car have a water leak?
Some of the most common causes of a water leak are the exhaust, the cooling system, and the windscreen washer system. If you see a clear and odorless fluid under your car, then it’s possibly just water from your car’s AC system.
What causes a Porsche 911 engine to wobble?
The wobble occurs at the bottom of the stroke and results in the piston skirt dragging against the cylinder wall thereby scoring the liner. More recently, this issue has also been seen on the later engines. An early telltale sign can often be one exhaust tailpipe being more sooty black than the other.
What kind of problem does a Porsche 911 have?
Less common are leaks from the cam seals and scavenger oil pump seals. Valve cover leaks are obvious and fairly straightforward to fix on most models. The valve covers do not have a gasket – instead a liquid gasket sealer is used.
Why does my cabriolet top keep leaking water?
The drains in the Cabriolet top can clog, causing water to leak onto the carpets. Water can also accumulate in the doors, causing various electrical problems. Good news! We found 23 RepairPal Certified shops near you.
What causes water to leak from Porsche Boxster?
Water Leaks from Cabriolet Tops Due to Clogged Drains on Porsche Boxster. Problem Description. The drains in the Cabriolet top can clog, causing water to leak onto the carpets. Water can also accumulate in the doors, causing various electrical problems.
A failing air oil separator (aos) is the likely cause of rear main seal failure and oil leaks, as it is in other VAG cars. Crankcase vacuum exceeds the normal range in the engine under heavy acceleration and sucks in air damaging the rear main seal.
Is the 2005 Porsche 911 Carrera 2s cabriolet?
Lavishly luxurious, this 2005 Porsche 911 Carrera 2S Cabriolet (AKA 997) represents a faultless convergence of unparalleled power and beauty. With a 6-cyl engine powering this automatic transmissio… More Info › We have a premium selection of Pre-Owned Luxury Vehicles and we are committed to providing a great experiences for our customers.
Can a Porsche 993 air cooled car leak oil?
Despite the old saying, “If it does not leak oil, it is not an air-cooled Porsche,” the 993 was not designed to leak oil. Read on to determine the cause of an oil leak in your 993. This article applies to the Porsche 993 (1993-1998).
What causes an oil leak in a Carrera 4?
On same of the car the there is an oil cooler on top of the engine (rear) which it’s orings can leak. On the LH side of the car, there is an air oil seperator which can leak. On to top of the engine, oil can pool from various sources, AOS and it’s various tubes and orings, oil filler tube and it’s orings, and oil dipstick and it’s orings.
What happens if you have an oil leak in your car?
If you must drive a car with an oil leak, you will need to check your oil frequently, and you will need to be the judge of how bad it’s leaking and how often it will need to be topped off. Oil leaking from an engine can cause a huge mess wherever you park and permanently damage asphalt surfaces,…
Where is the oil leaking on a Porsche 911?
Adjacent to the right cam oil line on the later cars is the oil pressure sending unit. This unit has a tendency to leak where it is attached to the case, and also from its own housing. Carefully inspect the sender, and replace it if you think that it might be leaking.
On same of the car the there is an oil cooler on top of the engine (rear) which it’s orings can leak. On the LH side of the car, there is an air oil seperator which can leak. On to top of the engine, oil can pool from various sources, AOS and it’s various tubes and orings, oil filler tube and it’s orings, and oil dipstick and it’s orings.
If you must drive a car with an oil leak, you will need to check your oil frequently, and you will need to be the judge of how bad it’s leaking and how often it will need to be topped off. Oil leaking from an engine can cause a huge mess wherever you park and permanently damage asphalt surfaces,…
Is there an oil leak on the LH side?
On the LH side of the car, there is an air oil seperator which can leak. On to top of the engine, oil can pool from various sources, AOS and it’s various tubes and orings, oil filler tube and it’s orings, and oil dipstick and it’s orings. HTH and good luck! Hi and thanks for your reply.
How do you fix a valve cover on a Porsche 911?
Valve cover leaks are obvious and fairly straightforward to fix on most models. The valve covers do not have a gasket – instead a liquid gasket sealer is used. The time consuming part is removing the old gasket sealer from the valve cover to ensure a good seal for the replacement.
What to do if your Porsche Carrera engine is leaking?
If you find that your engine is leaking from the rear main seal (also known as the flywheel seal), then simply install a new one while adding a little bit of Curil-T sealant to help keep it dry (see Photo 10 of Pelican Technical Article: Clutch Replacement on the Porsche 911 Carrera ).
What causes oil starvation in Porsche 911 Carrera?
In addition to the standard issues associated with the non-traditional sump system, the flapper windows on the bottom of the engine are manufactured out of plastic and can break off inside the sump and clog the oil pickup tube. This leads to oil starvation and complete engine failure.
Why are the rear seals leaking on my Porsche 911?
It’s not really 100 percent clear what the causes the leaky rear main seals. One cause may be the fact that the crankshaft has insufficient support on the rear end. It also may be caused by the fact that the crankshaft carrier support is only pinned minimally in one plane to the outer case.
What happens when the air separator fails on a Porsche 911?
When this unit fails, the result is oil sucked out of the engine and into the intake. While the air-oil separator will not cause immediate mechanical damage to your engine, it may make it smoke tremendously and/or run roughly (see Pelican Technical Article: Porsche 911 Air Oil Separator).
What happens if you have a coolant leak in your Audi?
If your Audi becomes low on coolant it can overheat, causing damage to the engine. Overheating your engine is one of the easiest ways to cause long-term damage to an engine, so it is important to get a coolant leak fixed as soon as possible. Where do coolant leaks occur? Coolant leaks are either internal or external.
Why does my Porsche 911 have a vacuum problem?
Crankcase vacuum exceeds the normal range in the engine under heavy acceleration and sucks in air damaging the rear main seal. This is commonly seen on Audi engines as well.
What kind of engine problem does Porsche 911 have?
Wayne R. Dempsey Figure 1 This photo shows the flywheel end of an Figure 2 This is the infamous “D-Chunk” problem t Figure 3 Here is a fully repaired M96 engine with Figure 4 Although it may not look like much, this
How can I tell if my Porsche 911 has a problem?
An early telltale sign can often be one exhaust tailpipe being more sooty black than the other. The sound of this problem is not a tick like a bad lifter, it’s more a rhythmic knock and usually shows up first on the passenger bank of the flat 6 engines.
What kind of engine does a Porsche 996 have?
Results from this can be fun – we made 425HP from a 4.0L engine rebuilt from a broken 3.6L – however, you’re going to need a $25K budget to start the project! M96 engines fitted to the 996 and early 997 can have issues with a bearing at one end of the intermediate shaft. The shaft connects the two ends of the engine timing gear.
Valve cover leaks are obvious and fairly straightforward to fix on most models. The valve covers do not have a gasket – instead a liquid gasket sealer is used. The time consuming part is removing the old gasket sealer from the valve cover to ensure a good seal for the replacement.
Less common are leaks from the cam seals and scavenger oil pump seals. Valve cover leaks are obvious and fairly straightforward to fix on most models. The valve covers do not have a gasket – instead a liquid gasket sealer is used.
What’s the part number on the Porsche 911?
The part number for this rocker arm shaft seal is 911.099.103.52, and you need two of them for each rocker for a total of twelve. Another common oil leak comes from the oil return tubes.
What do I need for an oil change on a Porsche 993?
Some of the most important tools and items needed for this DIY is a oil filter socket, and over sized drain pan. There are two oil filter in the 993 engine, Porsche added an additional oil filter on the 993 engine to provide extra filtration of the oil for the protection of the hydraulic lifters.
How do you jack up a Porsche 993?
(Related Article: Porsche 993: How to Jack Up Your 993 – Rennlist.com) Figure 1. Car supported and wheels removed. In the front trunk, remove the brake fluid reservoir cap and siphon the old brake fluid from the reservoir. This is best accomplished with a syringe or baster. Be sure to place old fluid in a suitable container and dispose of properly.
What kind of brake fluid does a Porsche 993 use?
This article applies to the Porsche 993 (1993-1998). Brake fluid is one of the most neglected maintenance items on vehicles today. However, it is a vital part of the brake system that is used each and every time the vehicle is driven.
Some of the most important tools and items needed for this DIY is a oil filter socket, and over sized drain pan. There are two oil filter in the 993 engine, Porsche added an additional oil filter on the 993 engine to provide extra filtration of the oil for the protection of the hydraulic lifters.
Where is the oil cooler on a Porsche 911?
It should be noted that all o-rings when installed should be liberally coated with fresh, clean motor oil prior to installation. Located in the same general area is the oil cooler. The three seals that mate the oil cooler to the engine case also have a tendency to become brittle and leak.