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BTW, super easy to verify CORRECT TIMING with any TDC tool. Start with TDC for cyl #1 (like your 1st column). It's actually TDC overlap (as opposed to compression) for cyl #1. Put a TDC tool in cyl #3. Rotate crank 120 degree, cyl #3 should be at TDC (compression). Then put the TDC tool in cyl #5, rotate crank 120 degree, cyl #5 should be at TDC (compression). Repeat the above for cyl #1, #6, #2, #4. Firing order 1-6-2-4-3-5 With your current TIMING, I expect #1 to hit TDC compression simultaneously. Similarly for #2, #3.
If your timing was correct, you start at column 1 reading, rotate the crank 360, you should see column 2 on bank 2. However, since your columns 1&2 were taken at the SAME TDC without crank rotation, you have the classic problem of failing to turn the crank 360 before timing (and installing the cams) on the second bank. The engine will run on 3 cylinders only. This issue should not have caused valves damage though but I'm not sure why the engine is stiff when it's close to TDC (with the spark plugs removed).
Yes, that whistle works very well. If the problem is truly the 360 degrees offset, correct either bank should work. Btw, I thought you got your missing variocam solenoid spring fixed sometime ago and everything worked well afterwards? What happened?
Ahsai replied to longrowe's topic in 996 Series (Carrera, Carrera 4, Carrera 4S, Targa)Glad you got it sorted. It's a great demo of the voltage drop test.
Yup, bank 1 and bank 2 should be offset by 360 degrees crank angle and you should only be able to fit the cam lock tool to ONE of the banks at a time. Looks like you could have fit the tool in bth banks above (barring slight misaligment). To further convince yourself, I suggest you remove all the spark plugs and check compression of each cylinder one by one following the firing order. If your timing is correct, you should get compression of each cylinder in the correct order. With your existing timing, I believe you won't (two opposing cylinders will compress simultaneously).
Ahsai replied to longrowe's topic in 996 Series (Carrera, Carrera 4, Carrera 4S, Targa)The 0.7v voltage drop between the alt output and +ve term post in the engine bay points to the y cable. I had one turned bad after a yr of installation so it's not impossible.
Thanks. I was thinking this could be a good confirmation and easy diagnosis for others in thr future.
Ahsai replied to Brian Zaniboni's topic in 996 Series (Carrera, Carrera 4, Carrera 4S, Targa)Great, you got a self-healing 996! :)
Glad you've found your problem. Just curious when your a/c doesn't work, can you try if your wipers work? They get power from the same circuit after the igniti switch.
Check fuses C7 and D6 and relay #18 inside the left kick panel. Maybe your a/c compressor clutch is toast.
Yes, you got enough refrigerant for sure so that's not the problem. Does the a/c clutch click and engage at all when you turn on the a/c?
John is right. However, you can still check the static pressure when the engine is off. It should be ~70-80PSIG on either low/high side (temperature dependent). If you have some very low numbers, your pressure switch will prevent the compressor from being activated.
A few things come to mind. They may not be coherent... - Checked fuses C1-C4 and E1? - coolant temp reading correct? - have you tried e-gas calibration? - have you checked for sparks when the engine doesn't fire up? - retiming of bank 1...360 degrees offset of bank 2 was ensured? - No special tricks in Durametric AFAIK during staring - Perhaps worthwhile to check for compression in firing order - Have you tried with no MAF? - What's the MAF voltage reading with key ON engine OFF? (should be 1.1v or so)
Ahsai replied to Evert's topic in 996 Series (Carrera, Carrera 4, Carrera 4S, Targa)In that case, the strongest suspects are the starter y-cable and the engine ground strap (behind the right rear wheel on the cam cover). To diagnose the cables, this may help
Ahsai replied to Uwon's topic in 997-1 Series (Carrera, Carrera 4, Carrera 2S, Carrera 4S)A genuine water pump from Sunset is $323 + shipping https://www.sunsetporscheparts.com/oem-parts/porsche-water-pump-99710601106/?c=Zz1jb29saW5nLXN5c3RlbSZzPXdhdGVyLXB1bXAmaT02OTMzNTgwNSZyPTEmYT1wb3JzY2hlJm89OTExJnk9MjAwNiZ0PWNhcnJlcmEtcyZlPTMtOGwtaDYtZ2Fz I believe the pump is made by Pierburg so that may not be a bad option.