17 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHEngine knock - any ideas?
Leading reported evidence
Check play there was some
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
When my Boxster's water pump was making noise and I checked for play there was some but it was so slight I had to go around and check the other accessory drives again just to have some idea of what less play felt like.
Leading evidence: 'Check play there was some' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check any coolant leak sign' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed · Original poster
I removed the drive belt, cleaned the belt and pullies while I was at it.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
Along with bearing play check out give the water pump a thorough check for any coolant leak sign.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
Then check each accessory drive pulley for any play.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
When my Boxster's water pump was making noise and I checked for play there was some but it was so slight I had to go around and check the other accessory drives again just to have some idea of what less play felt like.
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
When my Boxster's water pump was making noise and I checked for play there was some but it was so slight I had to go around and check the other accessory drives again just to have some idea of what less play felt like.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
When my Boxster's water pump was making noise and I checked for play there was some but it was so slight I had to go around and check the other accessory drives again just to have some idea of what less play felt like.
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
If rather than flat bedding the car to a shop for diagnosis if you want to do some investigation for your own benefit, the first thing I'd advise is you remove the oil filter housing and carefully dump its contents into a clean drain pan and check for scary metal/plastic debris.
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
If rather than flat bedding the car to a shop for diagnosis if you want to do some investigation for your own benefit, the first thing I'd advise is you remove the oil filter housing and carefully dump its contents into a clean drain pan and check for scary metal/plastic debris.
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
say the transmission area or from the exhaust system area -- then shut off the engine and install the belt and button the car up and get it flat bedded to a shop qualified to diagnose the problem and repair the engine.
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
After you have done this and have found nothing scary and have installed the housing with the filter and topped up the engine oil then my recommendation would be to gain access to the accessory drive of the engine and remove the belt -- note carefully its routing and direction of rotation so you can reinstall it as it was before or install a new belt correctly if you replace the old belt.
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
17 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261026T112012Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
First let me say I'm not really worried about IMS
. I recently got this porsche and Ive just noticed a faint knocking I didn't hear before. Im sure it could be nothing but I've never heard it before so I'd appreciate any advice. It sounds like its coming from left side.
Previous engine related maintenance on this car:
2013 - IMS, chain tensionerx2, timing chain tensioner,cam plug
2012-clutch kit, pilot bearing, crankshaft seal.
https://www.youtube.com/watch?v=9CWj...ature=youtu.be
Hmm. Not sure if video is showing up, I used the youtube tags.
If rather than flat bedding the car to a shop for diagnosis if you want to do some investigation for your own benefit, the first thing I'd advise is you remove the oil filter housing and carefully dump its contents into a clean drain pan and check for scary metal/plastic debris.
While you are not really worried about IMSB you should eliminate this as a possible explanation for the noise.
After you have done this and have found nothing scary and have installed the housing with the filter and topped up the engine oil then my recommendation would be to gain access to the accessory drive of the engine and remove the belt -- note carefully its routing and direction of rotation so you can reinstall it as it was before or install a new belt correctly if you replace the old belt.
Then check each accessory drive pulley for any play. You will have a number of them to check and the one with the most play -- it may not be alot of extra play either -- is the suspected source of the noise.
The belt will tell you something too, if one or both edges are sharp.
Along with bearing play check out give the water pump a thorough check for any coolant leak sign. One telltale is a lump of dried anti-freeze residue under and behind the pulley.
If you find no obvious accessary drive if the noise appears from a dead cold start you can start the engine and let it idle with the belt removed long enough to determine if the noise is still present. If it is present and coming from the engine area -- vs. say the transmission area or from the exhaust system area -- then shut off the engine and install the belt and button the car up and get it flat bedded to a shop qualified to diagnose the problem and repair the engine.
So I got to it today. After having mechanic friend have a listen Im not convinced its a 'knock' per say. It sounds like its coming from lower left side and easier to hear from the rear left wheel well. The sound is alot less noticeable than when I posted the other day. I can only assume because it was cooler when I started the car that morning?
Anyways, I dropped the oil filter cover - oil is clean.
I removed the drive belt, cleaned the belt and pullies while I was at it.
Started the car with belt off and everything sounded ok for the 10-15 seconds I had it running, but it was pretty faint when I began the job so not sure.
I did look for play on the pullies and only the water pump had a little play. I posted a video. Not sure if this is enough to make a noise. When the belt went back on I tried to pry on it a tad and it was really tight (with belt on). No sign of coolant buildup but I couldnt get behind the pulley. Not even sure if you can take that out with the motor in the car? EDIT: Googled it and looks like this can be a DIY
When I started the car with the belt back on it was faint also.. and took a few seconds for me to hear the noise. But it's still there.
20150726 170342 - YouTube
What do you think?
Water pump is shot.
The longer you drive it the larger the chance that it will contact the engine block and either break off the plastic impellers sending them into the engine to obstruct small water passages and cause cracked heads, and or other serious damage.
If it is an aftermarket steel impeller pump on contact with the block it will gouge metal from the block's pump mating scroll, sending that into the engine to very possibly cause catastrophic damage. If it gouges the block deep enough the block will need to be replaced.
You should probably consider replacing the pump SOON. Like Monday morning?
What others have said. Do not run the engine any more. That's enough play to condemn a whole bunch of Porsche water pumps.
When my Boxster's water pump was making noise and I checked for play there was some but it was so slight I had to go around and check the other accessory drives again just to have some idea of what less play felt like. That the water pump had any play was enough to have me flat bed the car to the dealer and have the water pump replaced.
Might add that with that much play I would be concerned about broken/missing impeller blades from the play allowing the impeller to contact the block. The water pump impeller blades do not have that much clearance between themselves and the block.
If the pump comes out with the impellers intact that's great. But if not then steps have to be taken to ensure the impeller debris is removed. A thorough back flush of the car's various cooling system sub-circuits is called for. One wants to flush the radiators backwards to flush out any possible impeller debris from them and the block too with same goal in mind.
Do not drive the car or even run the engine any more.
You have dodged a very big bullet with the water pump showing that much play. I'm surprised that you can't peer in and see the impeller from the outside with that much play.
Have the car flat bedded to where it will be fixed and be sure you mention the possibility the impeller blades may be shredded and if so the engine and radiators can be back flushed to remove the debris.
If the water pump impeller comes out intact then buy a lottery ticket.
If you win remember me! A new GT3 -- any color -- would be just fine. Thank you.
From the video, it looks like the play is actually between the pulley and the shaft that drives the blade and the shaft is not wobbling. That would also explain how he got away with so much play.
Could be. Wonder how the pulley became that loose on the shaft?
Anyhow, I hope the OP flat beds the car in rather than drive it in. My Boxster's water pump was just grumbling and I flat bedded it 25 miles to the nearest dealer. Cost me $125 I think. Worth it.
Not as bad as the bill for having my Turbo flat bedded from Ely NV to Livermore CA back in 2009. I paid around $1750 for that. 540 miles or thereabouts.
Heres a lottery ticket and my old water pump. I caught it before disaster because I asked for help and you guys gave good advice. Thanks again!
Got the water pump changed and the thermostat.
*yes* i towed it. But come on... theres probly a few hundred miles left on that pump! Anyone need a spare
Zak
This is a source reference. Confirm exact model applicability in the original material.
