Engine Noise
Thread Starter
Intermediate
Joined: Feb 2013
Posts: 30
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Thanks jumper5836, that seems to be the same noise that my engine is making. Did you ever find out what was causing that noise. I saw earlier that you said it went away after warming up and heavier oil made it louder, and it drinks oil, is the engine still running like that or did you have it repaired?
Nordschleife Master
Joined: Mar 2004
Posts: 8,573
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From: great white north
No repairs. It's been like this since 2008, it used to go away after being warmed up but not anymore. I had the cylinder borescoped and the mech said I had a scored cylinder and that 5 of the 6 cylinders had abnormal oil pooling. Meaning that 5 of the 6 are ovaled.
I've driven it hard at the track in this condition many times, even today after 3 months storage. Drive it hard any it just keeps ticking. No issues other them it burns oil.
My dyno under current condition and had other similar or newer 996 3.6l with same results the same day on the same dyno.
I've driven it hard at the track in this condition many times, even today after 3 months storage. Drive it hard any it just keeps ticking. No issues other them it burns oil.
My dyno under current condition and had other similar or newer 996 3.6l with same results the same day on the same dyno.
Nordschleife Master
Joined: Mar 2004
Posts: 8,573
Likes: 97
From: great white north
I bought a 996 Turbo as I didn't want to miss another season at the track. The C4S really won't be driven until a I can afford the engine rebuild. Hopefully this summer. I only brought it out of storage to do a drive clean test to renew the license plate.
Instructor
Joined: Jun 2010
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SO TeamSadistic.............
We are still waiting for the final answer.....2 weeks ago you were asking questions and questions...now we would like to know the answer......like many others ( AOS story) you just disappeared....
We are still waiting for the final answer.....2 weeks ago you were asking questions and questions...now we would like to know the answer......like many others ( AOS story) you just disappeared....
Captain Obvious
Super User
Super User
Joined: Aug 2003
Posts: 22,846
Likes: 348
From: Cambridge, Ontario, Canada
No, it can be either or something totally different in the engine. Noises like this are tricky to diagnose. Last week was working on an engine that sounded like a really bad camshaft tapping. Turned out it was an idler bearing for the serpentine belt was coming apart and the pulley was rubbing against the casting webbing of the block.
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Rennlist Member
Joined: Jun 2012
Posts: 574
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From: Cambridge, Ont
Thanks Imo000. Ran the car for about 20 mins yesterday after storage. Had a slight tick as well but did not notice if it went away after it reached operating temps. I'll have to check it out again.
Instructor
Joined: Mar 2009
Posts: 100
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From: Beyond the sun.
Soft ticking sounds like the lifters. I agree, get it out and get the oil good and warm (that will take driving it around for as much as half-and-hour; oil warms up more slowly than coolant). If the ticking stops, it was the hydraulic lifters. If it doesn't, then it's something else. Unlikely to be the IMS bearing, and a plug or coil misfire would definitely trigger a CEL. Not feeling piston slap -- could be, I suppose, but that's usually more of a clatter than a soft ticking and unlikely that a spun bearing resulted from just sitting.
Banned
Joined: Mar 2010
Posts: 7,697
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From: Chicago
Any updates from OP btw?
Thread Starter
Intermediate
Joined: Feb 2013
Posts: 30
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Sorry guys, I have been too busy with other projects and was a little bummed with what I have learnt about these engine problems. Oil and service parts have arrived so I will probably attempt some service and troubleshooting? Quick question, fuel level is really low so is it okay to fill up with regular fuel and add a fuel stabilizer or should I use vp race fuel? Should I fill tank completely or 3/4 or what? Thanks
Nordschleife Master
Joined: Mar 2004
Posts: 8,573
Likes: 97
From: great white north
Sorry guys, I have been too busy with other projects and was a little bummed with what I have learnt about these engine problems. Oil and service parts have arrived so I will probably attempt some service and troubleshooting? Quick question, fuel level is really low so is it okay to fill up with regular fuel and add a fuel stabilizer or should I use vp race fuel? Should I fill tank completely or 3/4 or what? Thanks
Thread Starter
Intermediate
Joined: Feb 2013
Posts: 30
Likes: 0
Alright guys for everyone that read the post, I recently posted what happened to engine on a post titled island update. I got the dt40 oil, put in high octane fuel, changed all filters and stated motor, sound actually began to go away, after couple minutes pressed gas and kaboom, no more noise, no more engine. Bottom part of connecting rod came thru case. Not familiar with how engine is built, but can engine be repaired?