Technical Q&A
Welcome to PCA's source of expert advice, where our PCA National Technical Committee experts answer your questions about all things technical.
I do not understand how a Top Tier gasoline cleans the intake valves on the intake side of the valve with direct fuel injection. The gasoline never passes over the intake side of the valve. This question is not particular to my Porsche.
Wednesday 10/08/2025 | 2007 | 911 Carrera 4S Cabriolet | Fuel System
READ ANSWERNeed tips for installing small front spoiler.
Monday 10/06/2025 | 2006 | 911 Carrera 4S Cabriolet | Body
I’m having trouble installing the front spoiler (photo below). The valence is flexible, so it simply bends upward when I try to push the tabs into the slots. It is the correct part, and the slots all line up. Any tips?
READ ANSWERI asked about EPR service in conjunction with oil change - it is described at https://www.bgprod.com/catalog/engine/bg-epr-engine-performance-restoration/ is this a valuable service?
Monday 10/06/2025 | 2006 | 911 Carrera | Engine
The tech who responded to my question was not familiar with the EPR cleaning process.Have others done this, or was I sold an unneccessary service (about $460).
READ ANSWERis my engine purge fan failing?
Sunday 10/05/2025 | 2009 | 911 Carrera | Accessories
When I activate the fan in the deck lid to stage 1, there is no movement. When I activate it in stage 2, it spins but sounds really rough unlike before. This happened after a 5 hours drive in 80 degrees. I removed the fan and it spins freely.
READ ANSWERIMs Bering
Sunday 10/05/2025 | 2000 | Boxster | Performance Modifications
Shock replacement
READ ANSWERI have an '06 997.1 with 70,000 miles - is EPR service recommended during an oil change?
Saturday 10/04/2025 | 2006 | 911 Carrera | Engine
READ ANSWERWhat happened! The new panel for my warped one is $2600,00 from Porsche. No, I'm not kidding. This has been a problem with the 981 cars. Any stepping up to the plate by Georgia??
Saturday 10/04/2025 | 2013 | Boxster | Interior/Upholstery
CELL: 574 333 8183EMAIL: galaxysportsinc@sbcglobal.net
READ ANSWERThe interior door panel (left) is warping. I understand this has been a problem with the 981 series. A new panel from Porsche is $2,600.00.
Saturday 10/04/2025 | 2013 | Boxster | Interior/Upholstery
READ ANSWERI removed my passenger door handle to replace it with a carbon fiber one, when the door closed it will not unlock mechanically. I’ve tried pulling the door cable and hear the actuator engage, but it still does not open. I tried the key fob, disconnecting the battery, and the electronical lock inside. They all do not work, any suggestions?
Saturday 10/04/2025 | 1998 | Boxster | Electrical
READ ANSWERI have a 1975 Carrerra with Orange single stage paint. To re-touch rockers what paint brand color code should I use? Car was repainted 2016 and don't have the brand/codes. Any good Porsche painters in SF/Bay Area?
Friday 10/03/2025 | 1975 | 911 Carrera 2.7 (Euro) | Body
READ ANSWERweere is the fuse or link in main power systeh
Tuesday 09/30/2025 | 2008 | Cayman S | Electrical
battery was dead used jumper at fuse box jumper had 19 volt battery and went hooked up I heard a small pop and now I can not get the jumper do do any thing checked fuses in fuse box all ok
READ ANSWERThe rear spoiler is not retracting
Tuesday 09/30/2025 | 2001 | Boxster S | Other
READ ANSWERHi there - I have had to replace the driver's side convertible top transmission as a result of the plastic drive wheel breaking.
Tuesday 09/30/2025 | 2006 | Boxster S | Other
The installation was straightforward and the top is operational again but since installing the new CT transmission I have notice the passenger side of the clamshell is not flush with the rear quarter panel on that side, while the driver's side is flush. It is quite noticeable when the top is down (the clamshell is about 1/4in above the pax side hind panel when the top is fully retracted - see pic attached) vs when it is up (about 1-2mm above the pax side panel and barely noticeable). The od ...
READ ANSWERSteering wheel vibration between 75 - 85 mph and a vibration from the rear at around 65.
Tuesday 09/30/2025 | 1999 | Boxster | Other
Both (front and back) vibration seem to occasionally disappear and then come back. some days are worse than others. I've tried: Four wheel alignment. New tires balanced with a Road Force balancer, twice. New front PowerStop carbon ceramic brakes with matching rotors. Torqued all axle nuts to spec. Put a wrench on every steering/suspension bolt I could find to ensure it's all tight. Swapped wheels side to side. Checked runout and wobble on all wheels. Inspected steering and suspension, all se ...
READ ANSWER2004 996 x50 turbo replacement
Monday 09/29/2025 | 2004 | 911 Turbo Cabriolet | Other
I have to replace my lift side turbo . Is at the dealers for repair.. when they pulled the turbo it was a K 14 not a K 25 turbo model. Does anyone know why a k14 would’ve been put in an X 50 turbo was there a modification done to the turbo or the engine that did not require the larger K 25 turbo be installed at the time of manufacturer?
READ ANSWERhow do I decode the paper sticker under the front hood? I want to know all the options as I don't have the window sticker
Sunday 09/28/2025 | 2002 | 911 Carrera 4S | Paint
I would like to know what each code is on the stickerThanks,
READ ANSWERCertificate of authenticity
Sunday 09/28/2025 | 1988 | 911 Carrera Cabriolet | Other
Hi,How do I go about getting an "authencity certificate"? I have a 1988 Porsche 911 Cab with the rare Metallic Diamond Blue color and marine blue interior but it's not an anniversary model. Definitely ordered from the dealer as a special request. Mark
READ ANSWERWindshield Replacement
Friday 09/26/2025 | 1984 | 911 Carrera | Body
I have an 84 911 with a windshield that has the defroster heater element incorporated @ the base of the windshield. I have a couple of chips, and the glass has started delaminating. Is it possible to get a replacement and if so, can you provide vendor info?
READ ANSWERDo after market ECU, "Tuners" really provide any benefit?
Wednesday 09/24/2025 | 2009 | Cayman | Engine
Being as an ICE is basically an air compressor and more air in and out would be required for an increase in performance, do the various after market ECU, "Tuners" or re-flash really provide any benefit and or, "Unlock" as they all claim additional motivation in an otherwise, bone stock engine?Is the juice worth the squeeze, as these so called, "Tunes" all hover in the $1k range.The car is plenty fast, with exceptional handling and brakes for the tight, twisty and tech ...
READ ANSWERWill a new, model specific replacement TPMS computer create fault codes on the dash?
Wednesday 09/24/2025 | 2009 | Cayman | Electronics
Recently, without any wheel or tire changes, (Stock 18") the TPMS function on the dash refuses to, "learn" or display any tire pressures.There are no ICar soft scanner codes displayed and after numerous attempts to re-set the system, including disconnecting the battery, the display is stuck on right side only 29F and 30R.No display for driver side.It is unlikely that all of the batteries in the tires suddenly expired and the TPMS system has always worked and quite accura ...
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