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edebes

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Posts posted by edebes


  1. Jeff,

     

    I concur. However, before I move in that direction, there are a few variables I need to address. It may be a few weeks to provide the results of the bore score scope. My purpose is I don't want to do a repair K$ range..I would rather send to Jake and have him do the entire engine and know I have all the possibles covered going forward. I appreciate your willingness to work with me on this problem and I will keep you advised.

     


  2. I was running DT40 until Jack Raby recommended 10w30 diesel to protect the engine from getting worse if bore scoring was the problem.  So I changed oil Fall, 2019. Regardless of what oil I have used, the tapping continues.  I have not used a recommended 5w50. Thoughts on this?  What about the idle issue, 665 rpm is not correct when hot? Can bore scoring create a very low hot RPM?  


  3. Jeff, Loren, and Mike:

     

    Here is my data for my BoxS regarding oil pressure and warm-up condition. As you will note, I observed the car for an hour and took readings over that period. 

     

    Summary of results: Cold temp oil pressure was 89 psi at start-up idle (and no knocking sound) and as the engine fully warmed to 98 degrees C, and oil pressure at idle (665) dropped (at the end of the test period, 60 minutes) resulted in a reading of 17 psi with the a very loud knocking sound. The trend data shows a correlation between engine temp and oil pressure and oil pressure and rpm. One aberration is at the the 48:00 minute mark where the engine/ecm voluntarily raised the idle speed to 800 for 3 minutes. The engine had no knocks and ran like a new engine over that 3 minute period. Then the low idle returned to 665 and the knocking was present until end of test.

     

    Please refer to the data collection sheet attached to this email for full test results.

     

    Jake Raby suggests a few tests and data collection regarding bore scoring using Durametric. Fuel trim, cam deviation,  and rough running index. All  data from these variables  I have observed is within the range Jake has set on his video.

     

    Gentlemen, what is the next step? If you require more data, please tell me as I still have the OPG attached to the port and my PC in my garage.

     

    Thanks again!

    edebesoilpresstest04 BoxS.pdf


  4. Jeff,

     

    That was replaced last year upon your suggestion...unless there was an update in the last year, I used the kit purchased at the local Porsche Dealer In Lancaster PA in early 2019.

     

    Durametric does not measure oil pressure on a 986...so I need to do a manual setup. Is there a kit made-up to do this for a Porsche 986?  Pedro has one to install in the dash...I just don't have the time now to do that install. I am a college professor and because of Covid19, I have to teach this summer.

     

    Ed


  5. Loren and Jeff,

     

    Thanks for the recent responses. I have additional data to share...

     

    Currently, cold start idle is 1100 RPM (+/-10 rpm),  as the engine warms, the idle reduces to around 910 RPM. When the engine is at 90 degrees C (800 RPM)  at full OT at 99 degrees C, the idle is at 650 RPM (+/- 10 rpm). (At 90 C, the tapping noise begins quietly, then becomes louder temp increases and the rpms fall). On the forums, correct idle is 780-800 RPMs. (If I am wrong here, please say so.) If by increasing RPMs by 20 (say 670 to 690), this quiets the tapping 95%. By my data collection, I am not at the factory spec for idle speed, then perhaps I should correct the idle issue first before I condemn the engine to a lifter repair?   

     

    First, do both of you agree with my analysis? 2. What could be the cause of the low RPM? 3. My plan would be to start with changing plugs. (Past owner's shop used Bosch 4471's which I believe are  incorrect and for 97-99 2.5 L.) Next, remove TB and clean it. (Here is the data from the throttle area: T-Plate POS 1&2 , 3.9 cold, #2- 2.3 hot; TPS1 (.66) hot, TPS2 (4.35) hot). Any other ideas or data I can provide?

     

    Again, I appreciate all the advice both of you have shared!!

     

    Ed


  6. Hello again Loren and Jeff!

     

    Well, the injectors are all good and not emitting a loud tapping sound, just the typical rattle injectors make. Thought it could be the AC Compressor, so I removed the drive belt and started the engine, the tapping started again at 80 C. I have isolated the sound now in the general area directly below the ac compressor. I understand this is where one of the chain tensioners resides.

     

    Further research from prior responses to this topic have the possibilities of bore scoring to worn pads.  

     

    So here is where I am with this investigation:

     

    I believe I have moved past the high level of damage, but concluding,... No CELs, It is not a noisy injector, Not the A/C compressor, Not exhaust leak, I have a clean oil toxicology report, The sound can only be heard at idle, however, just a slight increase in RPM say 50, the sound is gone. The reality here is increases in oil pressure results from a rise in RPM is worth considering  as a suspect.

     

    Here is some data from Durametric from my analysis today all through from cold start and after 30 minutes of driving: (If I need to post other data, just state description)

     

    Camshaft Position Variance Offset 1: 1.28

    Camshaft Position Variance Offset 2: 1.33

     

    I believe a difference of 6 and under is favorable and a difference of 6 and over is a concern.

     

    IF I have no other evidence (i.e. CEL's, failed oil report, and positive Camshaft shaft data, etc). I am now down to a  few other possibilities:

     

    I replace the tensioner regardless and determine if the problem still exists?

     

    Noisy lifter? Do I run an engine cleaner and if so, what do I use? Then a complete change of oil and filter.

     

    Check the #4 coil pack and plug. (Number 5 was fine). 

     

    Oil pressure issue at idle?

     

    Take to Porsche Service Center for cam cover removal and diagnosis?

     

    Any other ideas?? I would like to repair the car myself. I have only put a limited amount of miles on the car over the last 3 years. It has remained  mostly in the garage because I am afraid to drive it.

     

    Ed


  7. Loren and Jeff....Using the advice provided last year, I am still trying to solve the tapping sound of my 986S. In review here is a brief report. Car starts fine. I have NO CELs. On cold start, there is no tapping noise. Once started and engine temp is rising, tapping starts on the left side around 180 degrees and continues to become louder as the operating temp hits (210 degrees). Now, here is where I am in my investigation: I have taken a sample of oil and sent to LN for analysis. There were no issues to report. The report had all "green" areas. I was on the phone with a Porsche vendor who  asked if I have Durmetric and have I checked the injectors? I borrowed an "ears" analyzer and I can confirm the ticking is coming from the #5 cylinder on the left side of engine when at OT. When cold, there is no sound, in fact both sides have no noise prior to OT. I went to my Durmetric and used the injector "defeat" feature. I tried all 6 cylinders and when I removed #5 from the circuit, the ticking sound stopped. When I placed it back in operation, the ticking began about 8 seconds later. Have I confirmed that the injector is failing? I plan to replace the plug, coil pack and the injector in that order. Am I thinking correctly here?

     

    Ed


  8. Thanks for referral....after viewing videos, I noticed there are some statements and conditions that do not match my symptoms. I will do the spark plug torque, inspect oil filter element, view drained oil from latest oil change, and send oil for analysis. Have ordered Engine Ear to determine if "ticking"   is case related or cam cover.  Will report when I have more info...Thanks to GSpence2, and Ahasi, for input!

     

     


  9. Loren, Jeff, and Others:

     

    Over the last two years, you have assisted me with addressing the "tick, tick, tick" my 04 986s, 3.2 engine exhibits. No success achieved.. Did thermal spring upgrade, no success. 

     

    After reading more on the blog, I now have data I pulled from my Durametric software for interpretation.

     

    A review: I have a tick that gradually develops from a oil temp of 75C to 82C and after. The engine during warm-up has no issues, quiet, then when nearing 80C it begins its ticking. I also have two codes that are now present. P1325 (inlet camshaft Bank 2) and P1126 (Ox sensing lower load range, Bank 1). So, I addressed the 1325 first by reading about cam, pads, tensioners, and solenoids. The only info I could find was for the 996. Not sure if that would apply. Two items to mention is when raising the RPM slightly (100 rpm) when at operating temp, the ticking disappears and idle is slightly ill regular at cold start, then disappears.

     

    Here is the data from the Cam fields:

     

    Oil Temp: 81C (both data sets)

     

    Idle: 750 (ticking)

     

    Cam Shaft 1: 1.45

    Cam shaft 2: 1.38

    *Act Cam 1:  1.0 to -.5

    *Act Cam 2:  .01 to -.6

    Spct Cam 0.00

    Spct Cam 0.00

     

    Held at 2K RPM (not ticking)

     

    Cam Shaft 1: 1.45

    Cam shaft 2: 1.38

    *Act Cam 1:  1.06 to -.7

    *Act Cam 2:  1.00 to -.6

    Spct Cam 1.00

    Spct Cam 1.00

     

    * These are averages as the values fluctuate during data collection.

     

    Any guess on what why I have the codes or the ticking? Suggested next steps to solve codes and ticking.

     

    Ed 

     

     

     


  10. Good Day RT members:

     

    My Durametric tool done not have the ability to measure oil pressure for my year of car, so I would like to attach a oil pressure test gauge to the 3.2. What is the best port to establish a temporary connection, its location and take readings. (I believe I need the "Euro" adapter?) Is one test gauge pack better to work with Porsche, than another?  I believe I still have a low oil pressure issue after updating the "thermal spring" last year.  After recording the data, I will post so members can interpret. 

     

    Thanks.

     

    Ed


  11. Hello Jeff and other Boxster Fans:

     

    Dealing again with my 2004 3.2L (100.5k miles). Today's topic: oil pressure relief valve repair. Can someone direct me to pics regarding location of the cap I need to remove from the oil pump and how to replace the internal valve components. Also what is the list of parts needed to completely do this repair. thanks so much for your time.

     

     

    Ed


  12. JFP (and others) …Today I installed the new fuel pressure line to address above problem with no success. With the brand new connector snapped on the existing sending unit, gas continues to leak between the male stem and the fitting on the pressure line at modest rate as previously reported. So I thought, was it possible when the fuel pump was replaced by prior owner, the sending unit was damaged or an incorrect sending  unit was attached to the new pump as part of the repair.  The part number from current sending unit is 996 620 032 01. Called Autohaus in Lancaster, PA and they reported to me it is not an active number nor could they find as inactive (no listing). Did ebay search and in fact the part did show as a fuel pump for “02, 03, 04 Boxster”.  If the 996 620 032 01 part is the same I have in the car now, why would an ebay one work of the same type?  A-Lan also told me the correct P/N for the sending unit for my ’04 Boxster is 996 620 832 02. Can I fit this correct sending unit on the currently installed pump?

    Any other ideas and advice appreciated. Thanks in advance.


  13. Quote

     

     Thanks for your reply.  thie stem exiting the top of the pump area where the line attaches is solid with no cracks. as I mentioned in the above post the connector seems to move when pressurized. if I put pressure  on the top of the connector, holding it in place, the leaking stops. I'm assuming the connector is bad your thoughts? 

    Quote

     

     


  14. Hello,  Have not posted for a number of years...recently rejoined due to divorce. Good to be back on the forum. I now own a Box 2004S with six speed transmission 100 K miles. Having issues with leaky connection at fuel outlet on top of tank. I recently noticed the smell on long drives since warmer weather arrived on east coast. What I am I seeing? After removing battery and tray I see the pump pressures the hose, which forces the line connector up and away from the stem slightly and the fuel sprays and collects inside the retaining ring area. A call to Porsche dealer resulted in the part ID as a front fuel pressure line. I am told by parts this runs to the fuel filter...later research today indicates 04's have no inline external fuel filter. So does this line attach at another point under car?

     

    I guess the question is, how is this line installed? Does the tank need to be dropped some distance to fit line? Is it possible to remove bad snap fitting and fit on a new one. Is there instructions posted on this repair on the forum?

     

    Thanks in advance!

     

    Ed


  15. I am purchasing a 1988 951. I wanted to know if a LSD is stock on this year and model. If not, can one be added either after market or part from another 944? If so, how? I elevated the rear of my new car and rotated the right tire forward. The left tire did nothing. Should I assume this rear is working properly or is it dis-repair and needs new clutches? Any other tests to run to confirm my condition?

    Thanks to all in advance!

    Ed

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