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Registered
Join Date: Feb 2006
Posts: 63
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Any way to diagnose an IMS problem at test drive?
Is there a way to tell if there is an IMS problem with a 996 at a test drive? I know you can cut apart the oil filter to look for debris but that's not gonna happen when you meet someone to see their car. If they don't have records of cut apart oil filters or of the bearing being changed is there anything else to go on? Can you hear a pending problem with a stethascope?
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1974 Super Beetle. Turbo Twist 18" wheels. 928 front spindles and Brembos. 944 Aluminum Trailing Arms. 230hp Acura longitudinal V6. Work in Progress Near Tahoe |
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05-23-2019, 02:29 PM
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Registered
Join Date: Jan 2004
Location: Pittsford, NY
Posts: 3,701
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IMS bearings fail without warning. You can measure cam deviation as part of a PPI. If the car checks out, negotiate in the IMS and clutch as part of the deal.
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05-24-2019, 03:19 AM
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Registered
Join Date: Jan 2004
Location: Northern Virginia
Posts: 3,347
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Agreed. Hidden time bomb issue unless you cut the filer looking for shavings, or have receipts for IMS upgrade or maybe even oil analysis reports. As to lore about IMS failings, frequent oil changes and higher mileage engines seem to have less issues than garage queens. I believe the class action lawsuit reported about a 10% failure rate issue.
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1970 914-6 Past: 2000 Boxster 2.7, 1987 944, 1987 924S 1978 911SC, 1976 914 2.0, 1970 914 w/2056 |
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05-24-2019, 03:30 AM
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Registered
Join Date: Apr 2007
Location: I live on the road, I just stay here sometimes...
Posts: 7,104
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Make the deal conditional on passing the inspection
Then either renegotiate based on what was found or walk away
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73 RSR replica (soon for sale) SOLD - 928 5 speed with phone dials and Pasha seats SOLD - 914 wide body hot rod My 73RSR build http://forums.pelicanparts.com/porsche-911-technical-forum/893954-saving-73-crusher-again.html |
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05-24-2019, 06:51 AM
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Join Date: Feb 2006
Posts: 63
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So it looks like the short answer is no, as I thought. Thank you
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05-24-2019, 07:25 AM
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Registered
Join Date: Aug 2010
Location: Earth.............
Posts: 2,877
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The problem with diagnosing a pending IMS failure has always been timing; it could look perfect on Monday and make your engine a boat anchor on Wednesday….
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Accrochez-vous bien de vos rêves..........." |
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05-24-2019, 07:44 AM
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Puny Bird
Join Date: Nov 2002
Location: Port Hope (near Toronto) On, Canada
Posts: 4,566
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I wouldn't consider a '98-2005 without a PPI from a shop that knows these cars. If an owner won't let you get a PPI walk away. Cutting a filter only gives you a half story I'd drop the sump, free oil change for the owner is cheaper than an engine.
Way more issues than just IMS, scored bores are a bigger issue here. Borescope, code check, manometer would also be on my list.
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'74 Porsche 914, 3.0/6 '72 Porsche 914, 1.7, wife's summer DD '67 Bug, 2600cc T4,'67 Bus, 2.0 T1 Not putting miles on your car is like not having sex with your girlfriend, so she'll be more desirable to her next boyfriend. |
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05-26-2019, 10:13 AM
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