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987.1 2.7 Possible IMS or engine knock problem

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987.1 2.7 Possible IMS or engine knock problem

 
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Old 02-09-2019, 08:33 AM
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987.1 2.7 Possible IMS or engine knock problem

Hello,

I did PPI for a used Cayman and the mechanic found the car has possible IMS or some engine problem.
PPI was done by PCA sponsor shop (shop owner had 20years of Porsche Audi dealer technician career)

Here is more information about the car.

2007 (late 2006 build) Cayman base 987.1, 2.7 engine about 100k miles. MT.
Test drive went well, but after engine warmed up I felt some rattle like sound in the cabin. It only happen after warmed up and throttle on condition. idle and throttle off makes no rattle, Clutch on or off do not matter (so I think the noise is not related with clutch or transmission at least).

Did PPI with Porsche specialist. They found that the noise is not normal (I did not asked about the noise before PPI, but they just found same thing after test drive themselves). The noise was more like knocking under the car. They removed both engine covers to check pully, pump etc., but confirmed that the noise is coming from Engine. Unfortunately I forgot to record the noise.

They think, it is IMS failure start symptom for very early stage, but can not confirm until open the engine.

Asked over rev report and this is it.
Range 1: 53254
Range 2: 1696
Range 3: 9
Range 4: 0
Range 5: 0
Range 6: 0

I am not sure but feel like the engine rev up is much faster than another 07 Boxster I tested same day. So maybe LWFW has been installed.
The car has Action cam mount in the cabin, and PCA member's car, so maybe used on track (HPDE).

The reason I interested in this year (07~08) base model was that 987 2.7 engines do not have bore scoring issue and the IMS failure rate is rare (I know it is not 0%). But some how I found a rare example.

So I did not purchased the car, but really want to know if any one had IMS failure with 2006-2008 987.
 

Last edited by 958e39f56; 02-10-2019 at 11:37 AM.
 
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