997.2 Engine Reliability
12-07-2018, 06:12 PM
#482
Three Wheelin'
Just being lighthearted here. Likely not a big deal at all. Have 2 cars with 9a1 engine and occasionally will get some ticking at cold startup. It goes away and I don't overthink it.
I will say however, if the video is a cold start and the oil is not warm then revving the engine up like that might not be the best idea.
I will say however, if the video is a cold start and the oil is not warm then revving the engine up like that might not be the best idea.
12-07-2018, 06:41 PM
#483
RL Community Team
Rennlist Member
Rennlist Member
I'm reopening this thread again. I own a 997.2 C2S with 80000km which now is making a distinct tapping noise at cold start. Goes away after 5 minutes of driving but during the first 5 minutes you can hear it in the car while driving and engine braking, but now when accelerating. Also standing still and revving it only tapps when letting off the accelerator after you rev it. So not while revving up, only when revving down. And not on idle. The car has center muffler delete, serviced every 15000 km and running 0W-40 Mobil 1 oil, no engine mods. After the engine gets up to normal temp you can't hear the tapping while revving like in the movie below. So only when its cold.
It's currently at the local Porsche dealer and they say they can hear the tapping noise also at idle, must be with some instrument I guess or standing under the car while on the lift and idling. They have removed all 6 spark plugs and are about the check the cylinders, fingers crossed it's nothing critical.
Any ideas?
It's currently at the local Porsche dealer and they say they can hear the tapping noise also at idle, must be with some instrument I guess or standing under the car while on the lift and idling. They have removed all 6 spark plugs and are about the check the cylinders, fingers crossed it's nothing critical.
Any ideas?
Peace
Bruce in Philly
12-07-2018, 08:50 PM
#485
Nordschleife Master
I'm reopening this thread again. I own a 997.2 C2S with 80000km which now is making a distinct tapping noise at cold start. Goes away after 5 minutes of driving but during the first 5 minutes you can hear it in the car while driving and engine braking, but now when accelerating. Also standing still and revving it only tapps when letting off the accelerator after you rev it. So not while revving up, only when revving down. And not on idle. The car has center muffler delete, serviced every 15000 km and running 0W-40 Mobil 1 oil, no engine mods. After the engine gets up to normal temp you can't hear the tapping while revving like in the movie below. So only when its cold.
It's currently at the local Porsche dealer and they say they can hear the tapping noise also at idle, must be with some instrument I guess or standing under the car while on the lift and idling. They have removed all 6 spark plugs and are about the check the cylinders, fingers crossed it's nothing critical.
Heres a movie: https://youtu.be/t8_6g-DUFJg
Any ideas?
It's currently at the local Porsche dealer and they say they can hear the tapping noise also at idle, must be with some instrument I guess or standing under the car while on the lift and idling. They have removed all 6 spark plugs and are about the check the cylinders, fingers crossed it's nothing critical.
Heres a movie: https://youtu.be/t8_6g-DUFJg
Any ideas?
Note: fresh oil and MoS2 to the proper oil filling level, of course; do not overfill.
12-20-2018, 04:34 PM
#488
Intermediate
I've put 27,000 miles on my 2009 C2S in Delaware and keep the car outside. I drive it in the snow and have run it on all the local tracks (within 500 miles). The car runs fine except for one random shut down when I pushed in the clutch after filling it up with gas. The car seems to be fine (knock on wood).
08-01-2019, 12:22 AM
#489
I am shopping for a 997,2 cayman 2009 to 2012 . I believe the 2009 base does not have the direct injection but the S does... I am moving up to a more expensive car so I dont worry about bore scoring or IMS. Is the direct injected engine a must have for reliability ??? The horsepower would be nice , but either car would be fine. I just do not understand if the base with intake injectors or the direct injection would be a better long term deal... I have been without a porsche since my 944 and it had 250 k miles with timing belt and front seal and waterpump replacements.. I want a cayman I can drive a long time. Please give me your honest opinion and any info you could share. thanks much Scott in wisconsin.
08-01-2019, 09:45 AM
#490
I am shopping for a 997,2 cayman 2009 to 2012 . I believe the 2009 base does not have the direct injection but the S does... I am moving up to a more expensive car so I dont worry about bore scoring or IMS. Is the direct injected engine a must have for reliability ??? The horsepower would be nice , but either car would be fine. I just do not understand if the base with intake injectors or the direct injection would be a better long term deal... I have been without a porsche since my 944 and it had 250 k miles with timing belt and front seal and waterpump replacements.. I want a cayman I can drive a long time. Please give me your honest opinion and any info you could share. thanks much Scott in wisconsin.
08-01-2019, 03:42 PM
#492
Rennlist Member
Fuel economy is the #1 reason. Better fuel control with multiple injections per cycle allow for higher compression ratios and theoretically reduced emissions, however they've now discovered that GDI (gasoline direct injection) engines are generating soot like diesel engines, requiring gasoline particulate filters to address Euro 6 requirements for soot control.
08-01-2019, 03:48 PM
#493
Most companies have had widespread problems with the DI injectors and the high pressure fuel pumps but the problems appear to have decreased somewhat in recent years. VWs and Audis sold in the EU often have both port and direct injectors ( Some Toyotas in the US market as well). DI is used for idling and for extreme power demand while the port injectors are used for cruising etc. ( about 60-80% of the time). I believe the EU has stricter limits on particulates than the US. These systems offer the best of both worlds with greater cost ( but you still have a HPFP on board).