Coolant Leak After Engine Is Shut Off And At Operating Temperature...

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Notices Follow Rennlist on Facebook for News and Forum Updates 928 Forum 1978-1995 Sponsored by: Community Links Social Groups Pictures & Albums Users List Search Forums Show Threads Show Posts Tag Search Advanced Search Find All Liked Posts Go to Page... Coolant Leak After Engine is shut off and at operating temperature... Reply Subscribe Thread Tools Search this Thread Dec 21, 2006 | 12:12 AM Share Share Options #1 wgething Thread Starter Track Day Joined: Nov 2006 Posts: 16 Likes: 0 Coolant Leak After Engine is shut off and at operating temperature... Took the shark to work this morning as usual, but this time I smelled the sweet smell of burning coolant as I parked. So, I made a quick survielance of the underside of the car when I parked it, but there were no leaks to be found, so I continued on to work. After about 4 hours I went outside to see a 6 inch wide puddle of green coming from the front of the car. I looked underneath and saw the starting point...more towards the middle of the oil pan. I looked under the hood to see where the wet spots were, but didn't see much. I cranked up the engine...no leaks. I figured that maybe it needed to be at operating temp...so I drove it home...still no leaks. I shut it down after getting it hot, and there is what looks like a small wet area from just around and below the crank pully. Not sure if it is the WP or not, but it didn't gush out or anything like that. I let it sit for a bit and had no real dripping issues noticed, so I drove the other car to work. When I returned I found another green puddle eminating from just under the front of the oil pan. Small amounts of fluid can be seen on the front of the pan fins. I checked all the hoses, resevoir and radiator...they're all good. The only thing that I can think it could be without jacking the car up is the water pump. I'm just curious on why the puddle doesn't show up until the car is fairly cool. I sat and watched it after it was hot and shut down. Any help would be appreciated... 83 928S Auto, Reply 0 0 wgething View Public Profile Find More Posts by wgething Dec 21, 2006 | 12:16 AM Share Share Options #2 T Colvin Racer Joined: Oct 2003 Posts: 363 Likes: 0 From: Gilbert, AZ Sounds like the water pump. Reply 0 0 T Colvin View Public Profile Find More Posts by T Colvin Dec 21, 2006 | 12:25 AM Share Share Options #3 Shark Attack Race Director Joined: Oct 2005 Posts: 11,022 Likes: 71 From: Southern Utah Quote: Originally Posted by T Colvin Sounds like the water pump. i second that why when heating or cooling? things move, get bigger and smaller when they are hot or cold Reply 0 0 Shark Attack View Public Profile Find More Posts by Shark Attack Dec 21, 2006 | 12:53 AM Share Share Options #4 JKelly Burning Brakes Joined: Jan 2002 Posts: 842 Likes: 0 From: Springfield, MO Quote: Originally Posted by wgething The only thing that I can think it could be without jacking the car up is the water pump. I'm just curious on why the puddle doesn't show up until the car is fairly cool. Mine did the same thing, same spot. It was fine after driving and the next day there was a puddle. Maybe the water pump and gasket cools and shrinks before the coolant cools and looses pressure? Reply 0 0 JKelly View Public Profile Find More Posts by JKelly Dec 21, 2006 | 07:37 AM Share Share Options #5 Garth S Rennlist Member Joined: Oct 2003 Posts: 7,210 Likes: 17 From: Nova Scotia Most likely the shaft seal on the water pump - you are lucky to catch it early: the seal is still reasonably effective when spinning, but passes with the static 15psi behind it on hot shutdown .... new pump is the cure. You can remove the expansion tank cap and run the coolant system at zero backpressure to continue driving as you gear up for the TB/pump job; however, keep a close eye on the system temp and listen for pump bearing noises. Reply 0 0 Garth S View Public Profile Find More Posts by Garth S Dec 21, 2006 | 02:41 PM Share Share Options #6 SharkSkin Rennlist Member Joined: Jan 2004 Posts: 12,620 Likes: 8 From: Boulder Creek, CA Mine did the exact same thing a couple weeks ago, except water was dripping off the side of the pan -- running across the front, behind the oil level sensor, then dropping off the side. I took off the DS TB cover and looked inside -- and found a trail of water starting at the weep hole in the pump casting. I also have been doing exactly what Garth suggests. My daily driving is generally not too far in one shot so I've been able to add ~1-2 qts of water every day and drive it with the cap loosened all the way to the stop but not removed. Parts in hand, I'm planning to dig in and git 'er done Saturday. Reply 0 0 SharkSkin View Public Profile Visit SharkSkin's homepage! Find More Posts by SharkSkin Dec 21, 2006 | 04:20 PM Share Share Options #7 Mrmerlin Team Owner Joined: May 2004 Posts: 30,829 Likes: 3,932 From: Philly PA Hi it sounds like the water pump seal mine leaked a trail just to the right of crank centerline while looking at the engine and dripped off the pan, my Porsche factory replacment pump only lasted 1800 miles so i got one of our fresh rebuilt pumps and viola a less expensive part that works great,Stan Reply 0 0

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Mrmerlin View Public Profile Find More Posts by Mrmerlin Dec 21, 2006 | 10:35 PM Share Share Options #8 wgething Thread Starter Track Day Joined: Nov 2006 Posts: 16 Likes: 0 Thanks to all... I figured as much, I just didn't want to hear it right now with the holidays and all. Sounds like I will have some mechanic-in to do when the New Year gets here. I guess the S will be getting some presents over the holidays in the form of a new WP and TB with all the trimmings. Furthermore, an upgraded steering pump, crossover pipe, headers and a new Flowmaster muffler system will be in the mix... I got the fever!! Reply 0 0 wgething View Public Profile Find More Posts by wgething Reply Subscribe Tags antifreeze, car, coolant, coolent, egine, engine, engline, leak, leaking, leaks, oil, pan, shut, shutoff, shuts, turning Back to Subforum 928 Forum View Next Unread Mo' Power! Thread Tools Show Printable Version Search this Thread Advanced Search Thread Tools Show Printable Version Email this Page Advanced Search User Control Panel Private Messages Subscriptions Who's Online Search Forums Forums Home Rennlist Help and Welcome Sections New Member Welcome Area Rennlist Forum Glitches - post them here. Test posts are permitted. Rennlist Premium Member Help (Account and Membership Issues Only) Rennlist Classifieds The Rennlist Marketplace Vendor Announcements For Sale Ads - (Member to Member FS/WTB/Free) Buyer and Seller Feedback Porsche Technical Discussion Areas Taycan Macan EV 992 DIY - 992 992 GT3 and GT2RS Forum 992 Turbo and Turbo S 991 DIY - 991 991 GT3, GT3RS, GT2RS and 911R DIY - 991 GTx 991 Turbo 997 Forum 997 GT2/GT3 Forum 997 Turbo Forum 996 Forum DIY - 996 (1998-2003) 996 GT2/GT3 Forum DIY - GT2 & GT3 996 Turbo Forum 993 Forum DIY - 993 (1995-1998) 993 Turbo Forum 964 Forum DIY - 964 (1989 - 1994 911) 964 Turbo Forum 911 Forum DIY - 911 (1968-1989) 911 Turbo (930) Forum 718 Forum DIY - 718 718 GTS 4.0/GT4/GT4RS/Spyder/25th Anniversary 981 Forum DIY - 981 GT4/Spyder 987 Forum DIY - 987 Spyder/Cayman R Boxster & Boxster S (986) Forum DIY - Boxster & Cayman DIY 928 Forum DIY - 928 Macan DIY Macan Cayenne 9Y0 2019 - DIY - Cayenne Cayenne 958 - 2011-2018 DIY - Cayenne Cayenne 955-957 2003-2010 DIY - Cayenne (955/957) 924/931/944/951/968 Forum 924/931/944/951/968's For Sale DIY - 924/931/944/951/968 968 Forum 944 & 944S Forum 944 Turbo and Turbo-S Forum 924 and 931 Forum Panamera DIY - Panamera Porsche Supercars Carrera GT, 918,960 912 Forum 914/914-6 Forum 356 Forum Performance & Competition Discussion Areas Racing & Drivers Education Forum Spec Boxsters 944 Cup/Spec944 E/SIM Racing Data Acquisition and Analysis for Racing and DE Trucks and Trailers Porsche Cup Cars GT4 Clubsport Autocross Performance Modifications Forum Race Vehicle classifieds Wheel and Tire Forum Wheel and Tire Sponsor Showcase Concours & Car Care Dakar, Safari, Rally & Off-Roading General Discussion Forums European Delivery and or Porsche Experience Center Audio and Video Forum General Porsche Discussions Forum Other Marque Discussions "HEY, WAIT FOR ME" Racing Forum Porsche Memorabilia Jobs Wanted - Help Needed Rennlist Regional Forums (Regional Events, Discussions, Announcements, Etc.) Events Region Finder Rennlist Region Florida East US Rennlist Region New England Region - MA, ME, NH, CT, RI & VT Central US Rennlist Region West US Rennlist Region Rennlist United Kingdom Rennlist Europe Rennlist Canada Rennlist Canada classifieds Rennsport Forum - English and Francais Sandor Region (BC / Alberta / Sask / Yukon & NWT) Rennlist Asia-Pacific Rennlist Africa & Middle East International Forums Norsk Deutsch Español Français Italiano 日本語 (Japanese) Nederlands Svenska Marketplace Archive DIY Submission Forum General DIY Forum Parts Marketplace - Old Vehicle Marketplace - Old Reply Closed Thread Share

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