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.
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.
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 is there a problem with my Porsche 911?
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. A failing aos also causes too much oil to pass into the intake and will force the engine management to adjust fuel mixtures to compensate.
What happens when you shut off the a / C in a Porsche?
When the a/c electrical circuit to the clutch is excited with 12 volts and enough current the clutch’s magnet pulls the clutch hub into the pulley. Friction takes over and the two pieces turn in unison. So, let’s shut off the engine and locate the clutch’s wire.
How to troubleshoot a Porsche 911 Carrera engine?
Here’s a few useful 84-89 carrera tidbits that others sent me while going through my recent diagnosis. 1. Remove a spark plug wire and insert a test plug into the wire, place it next to the engine, have someone crank the engine and look for a spark (or remove one of the plugs and do the same).
Why does my Porsche air conditioner clutch not work?
If the clutch only works when you hot wired it your system “may” be low on refrigerant so that the low pressure cut out switch won’t allow the clutch to engage, or a relay or fuse is preventing current from reaching the coil. Check you wiring back to the source and read the section below “checking the site glass”.
Why does the a / C come on when the engine is running?
With the engine running (be careful here), the a/c turned on – use a circuit testing light attached to the wire/connector leading away from the compressor (the power lead) and ground. If the light comes on then we can assume the compressor is getting some amount of electrical power.
Why is the spark plug leaking on my Boxster?
Spark plug tube seals are also prone to leaking – leaks from the spark plug tube seals can be frustrating. Often, you wont see the oil initially, as it’s sealed in by the coil on top of the spark plug. The tube fills with oil and causes misfires by destroying the plug and the coil.
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.
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.
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.
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. A failing aos also causes too much oil to pass into the intake and will force the engine management to adjust fuel mixtures to compensate.
Why does my Porsche Boxster make a knocking noise?
The M96 and M97 engines found in the Boxster are famed for cylinder scoring – deep gauges in the cylinder liner, usually associated with a knocking noise and eventually catastrophic engine failure. The root cause of this issue is open to discussion, however, wear in the piston rings and liners causes the piston to wobble.
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.
The M96 and M97 engines found in the Boxster are famed for cylinder scoring – deep gauges in the cylinder liner, usually associated with a knocking noise and eventually catastrophic engine failure. The root cause of this issue is open to discussion, however, wear in the piston rings and liners causes the piston to wobble.
Are there any issues with the Porsche Boxster M96?
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. At one end, the shaft drives the oil pump and at the other, finishes in a sealed bearing.