What causes a Porsche Boxster engine to leak?
On the early cars, Porsche also used a center bolt to secure the IMS bearing that was too weak and sometimes snapped. If this bolt breaks, then the intermediate shaft begins to float around in the bottom of the engine, and you can soon experience catastrophic engine failure. This area is also highly prone to leaks.
What causes the crankshaft to shuffle on a Boxster engine?
It also may be caused by the fact that the crankshaft carrier support is only pinned minimally in one plane to the outer case. This can lead to shuffling of the carrier: shuffle pinning the crankshaft carrier as is commonly done when prepping an early 911 engine for the track can help the problem.
What kind of engine does a Boxster 2.5 have?
The problem affects mostly the 2.5 and Carrera 3.4 engines: the 3.2 Boxster S engine appears to be unaffected because it has thicker cylinder walls than the 3.4 engine. When this failure happens, you will see oil and coolant begin to mix together, or a slight unexplained coolant loss.
On the early cars, Porsche also used a center bolt to secure the IMS bearing that was too weak and sometimes snapped. If this bolt breaks, then the intermediate shaft begins to float around in the bottom of the engine, and you can soon experience catastrophic engine failure. This area is also highly prone to leaks.
Why do I hear a bang when I drive over a bump?
If the bushing wear down, the noise is not dampened and you may hear a resulting bang when driving over bumps. Loose Brake Caliper: Your vehicle’s brake calipers are pistons that engage the brakes when the brake pedal is applied. Calipers are typically secured with bolts and do not move.
The problem affects mostly the 2.5 and Carrera 3.4 engines: the 3.2 Boxster S engine appears to be unaffected because it has thicker cylinder walls than the 3.4 engine. When this failure happens, you will see oil and coolant begin to mix together, or a slight unexplained coolant loss.
It also may be caused by the fact that the crankshaft carrier support is only pinned minimally in one plane to the outer case. This can lead to shuffling of the carrier: shuffle pinning the crankshaft carrier as is commonly done when prepping an early 911 engine for the track can help the problem.
What are the issues with a Porsche Boxster?
Rapid and uneven tyre wear is a major problem on Boxsters where the wheel alignment is not right. It’s awkward to check when the car is on the floor as more often than not the wear is on the inside edge, which on the rear tyres, is very difficult to see.
How are the brakes on a Porsche Boxster 987?
The brakes on the Boxster 987 are excellent, although you may not think so the first time you drive one. Porsche braking systems are not as heavily servo assisted as those in most cars and your unfamiliarity with them may lead you to assume the response is poor.
What’s the best way to cool a Porsche Boxster?
The complete solution to both problems, though, is sleeving the cylinders. We use an aluminum/Nikasil sleeve to keep the same metallurgy. The cooling system needs some special attention. Road debris will build up on the radiators from the back side.
When to change clutch and flywheel on Porsche Boxster?
If it sees track use, you should really change it after every event—or, at most, every 10 hours. Expect to need a clutch and flywheel at around 60,000 miles. The rubber isolating two sections of the dual-mass flywheel falls apart, which causes an audible clunk. Don’t be tempted by cheaper aftermarket single-mass flywheels.
Can a Porsche 996 Boxster have IMS failure?
If you own a Porsche 996, Boxster 986 or a very early Boxster 987, Cayman 987 or 3.6 or very early 3.8 997, you are sure to have read some of the horror stories about IMS bearing problems.
How often should I clean my Porsche Boxster engine?
Notes: Some of these problems have been resolved in the manufacturing process and should not recur in new engines. The Boxster should not eat much oil (maybe a quart every 7500 miles), and should never drip oil underneath the car. If you have an oil leak repaired, make sure the dealer thoroughly cleans the engine.
What kind of car was the Porsche Boxster?
Known as the car that saved Porsche in the 1990s, the 986 Boxster is a 2-seater sports car that debuted back in 1997. It featured a mid-mounted flat-six engine and was Porsche’s first originally designed roadster since the 550 Spyder.
Why does my Porsche Boxster have smoke coming from the engine?
A quick puff of smoke as you start a cold engine is not uncommon, especially on the Porsche flat six engine in the Boxster. There are many theories and various thoughts as to why this happens – none are proven.
Are there any problems with the 986 Boxster?
The upgraded aos features a doubling in size of capacity for scavenging and is less prone to sucking up oil during high speed cornering. M96 engines fitted to the 986 and 987 Boxster can have issues with a bearing at one end of the engine intermediate shaft. The shaft connects the two ends of the engine timing gear.
Why does my Porsche Boxster have an AOS problem?
The AOS has caused numerous issues on Porsche engines and is an item to be closely monitored. As the membrane in the AOS fails, oil is sucked into the air intake. Initially this can show up as a check engine light for fuel adaptations with oil being deposited on the o2 sensors causing emission faults.
Where does the oil go in a Porsche Boxster?
The oil is recycled to the sump, while the gas is passed through the combustion path to be burnt and cleaned by the catalytic converters. The AOS has caused numerous issues on Porsche engines and is an item to be closely monitored. As the membrane in the AOS fails, oil is sucked into the air intake.
Why is coolant coming out of my Boxster?
There are many potential problems associated with this sign – oil could be getting in to the coolant from a blown head gasket, from a crack in the cylinder head, a crack in a cylinder liner or through the oil cooler. For sure, coolant in the oil and visa versa is a bad sign, the question is how lucky will you be as to where the problem is?
Why is casting porosity important in Porsche engines?
Engine Casting Porosity: As mentioned in the previous section, Porsche used a new cost-effective method to cast in most of the oil and water cooling passages directly into the engine case. This reduced the total part count for the engine, and also helped to reduce assembly time and production cost.
The upgraded aos features a doubling in size of capacity for scavenging and is less prone to sucking up oil during high speed cornering. M96 engines fitted to the 986 and 987 Boxster can have issues with a bearing at one end of the engine intermediate shaft. The shaft connects the two ends of the engine timing gear.
The AOS has caused numerous issues on Porsche engines and is an item to be closely monitored. As the membrane in the AOS fails, oil is sucked into the air intake. Initially this can show up as a check engine light for fuel adaptations with oil being deposited on the o2 sensors causing emission faults.
What’s the timing tool on a Porsche Boxster?
Normally, you would use Porsche tool 9624 to hold the camshafts onto the end of the motor (see Photo 3 of Pelican Technical Article: Boxster Engine Teardown ), but I found that the camshaft timing tool also pretty much did an adequate job of holding them in place as well.
Why do Porsche Boxster bearing last so long?
The track-day Boxster bearing longevity may be explained by the fact that these cars often have their oil changed after ever trip to the track. The best solution to the problem is to replace the bearing prior to its failure. Porsche Club of America tech advisor]
Where is the chain tensioner on a Porsche Boxster?
Porsche marked the top of each tensioner with different rings in order to help distinguish amongst them. A- The chain tensioner for cylinders 4-6 located under the air conditioning compressor. B- The main intermediate shaft tensioner]