Re: [MBZ] S500 Mystery Solved
Absolutely. Stupid simple to work on, maintain or repair. Dan > On Jun 14, 2015, at 3:34 PM, Mitch Haley via Mercedes > wrote: > > Is that one of the reasons why Poos normally recommends the 1996-1999 cars > with coils on plugs? > > Mitch. > > ___ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] S500 Mystery Solved
Is that one of the reasons why Poos normally recommends the 1996-1999 cars with coils on plugs? Mitch. ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] S500 Mystery Solved
ATTABOY! Wilton - Original Message - From: "Dan Penoff via Mercedes" To: "Mercedes List" Cc: "Dan Penoff" Sent: Sunday, June 14, 2015 6:01 AM Subject: [MBZ] S500 Mystery Solved So the issues finally come to an end, and I"m a little put off by my stupidity... Took the car to my trusted indie shop. After two hours of troubleshooting, they came back and said the MAF was sketchy and all of the hoses on the top of the engine were questionable. Fine. I drive it home and it's still running poorly at low RPMs, especially when taking off form a stop. Get above 1500 RPM or 20 MPH, runs like a top. Hmm. So I get a rebuilt MAF from MBUSA along with a full set of hoses for the topside of the engine. Put everything on the car yesterday morning (and boy, were those hoses bad!) and the car still runs like crap. Dang it! After my first test drive, I noticed besides the poor low speed operation, the left side cat was running hot. With this in mind, I'm thinking maybe I have a bad coil on that side of the engine. So I pull the distributor caps to take a look to see if their condition yields any clues Both caps are full of condensation. Grrr. I clean both out, button everything up, drive the car. Runs like new. Granted, the MAF was sketchy and the topside hoses were bad, but I can't help but wonder if the condensation wasn't part of the problem as well What's important is that it's fixed. Lesson learned. Dan ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] S500 Mystery Solved
Actually, it is normal in this climate. I found on several occasions where the car was parked for 3-4 days (or more) that condensation would sometimes collect in the distributor caps, but a good hard drive would burn it out. This was especially common when my son had the car at school, as the parking structure he parked the car in was a block from the waters of Tampa Bay. This, coupled with the temperature swings and humidity, added to being parked in a shaded area on concrete, created condensation on and under the car regularly. The caps aren’t tightly sealed, and being at the front of the engine and in the airflow to some extent don’t get terribly hot compared to the rest of the engine compartment. Numerous references to the same on the W140 Benzworld forums, too. Here is just one example of many: http://www.benzworld.org/forums/w140-s-class/2300802-distributor-cap-question.html#post11537146 The amount of condensate was very small, but it was enough to affect the spark. Dan > On Jun 14, 2015, at 8:12 AM, Jim Cathey wrote: > > Not solved. Where did all this moisture come from? That's > not normal. Is the crankcase ventilation plugged up such that > a little bit of the blowby was coming 'round the shaft? Did > you hose down the engine a little too vigorously? Ford any > streams? Buy the car in Florida, 'cheap'? > > -- Jim > ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] S500 Mystery Solved
Not solved. Where did all this moisture come from? That's not normal. Is the crankcase ventilation plugged up such that a little bit of the blowby was coming 'round the shaft? Did you hose down the engine a little too vigorously? Ford any streams? Buy the car in Florida, 'cheap'? -- Jim ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
[MBZ] S500 Mystery Solved
So the issues finally come to an end, and I"m a little put off by my stupidity... Took the car to my trusted indie shop. After two hours of troubleshooting, they came back and said the MAF was sketchy and all of the hoses on the top of the engine were questionable. Fine. I drive it home and it's still running poorly at low RPMs, especially when taking off form a stop. Get above 1500 RPM or 20 MPH, runs like a top. Hmm. So I get a rebuilt MAF from MBUSA along with a full set of hoses for the topside of the engine. Put everything on the car yesterday morning (and boy, were those hoses bad!) and the car still runs like crap. Dang it! After my first test drive, I noticed besides the poor low speed operation, the left side cat was running hot. With this in mind, I'm thinking maybe I have a bad coil on that side of the engine. So I pull the distributor caps to take a look to see if their condition yields any clues Both caps are full of condensation. Grrr. I clean both out, button everything up, drive the car. Runs like new. Granted, the MAF was sketchy and the topside hoses were bad, but I can't help but wonder if the condensation wasn't part of the problem as well What's important is that it's fixed. Lesson learned. Dan ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] S500 Mystery/vacuum leaks
My favorite indie uses a water hose to find vacuum leaks. Simple. You spray water around until the engine runs faster. sealing the leak with water makes the mixture richer, so the engine runs faster. I could not believe it. I did not want to hose water around the coil , distributor etc, but it works. He found lots of M116 leaks after I fixed the easy ones first with his method. I knew the vacuum fittings on the top of the engine were getting hard and brittle as they're known to do, but I didn't think any of them were leaking yet. I'm going to dig around on the internet and see if I can find the plan for a DIY smoke tester - this is something that is a big help and could use occasionally. More as I know it. Dan ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] S500 Mystery
I thought starter fluid was used to find leaks in gasoline car vacuum systems? Spray a little in a spot, see if idle speed picks up, spray another spot... -- Max Dillon Charleston SC '87 300TD '95 E300 ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] S500 Mystery
Titanium tetrachloride makes smoke as it evaporates. We used it in the wind tunnels to visualize flow. We'd dip a swab into some and stick it in the airflow and as it evaporated it made white smoke, easily seen. It lasted a while. Not sure where you get it now, I guess the webs would be your friend. --R On 6/5/15 5:25 PM, Dan Penoff via Mercedes wrote: Got the car back from the trusted indie shop. They spent two hours of diagnostic time on it and found that the MAF is probably bad and there are a number of vacuum leaks in all of the lines that run across the top of the engine and probably the boot at the bottom of the MAF. This is good news, as we know the wiring harness is good and they confirmed that. I just happen to have a spare MAF that someone gave me for free for the S420, and even better, it’s the SAME part on the S500. Woo-hoo!! The car comes home tonight, after which I’ll survey the vacuum lines and elbows that have to be replaced and make a parts list for my dealer parts guy on Monday. I’ll have him VOR (overnight) the parts so we have them on Tuesday and Tuesday night we’ll reassemble everything and get the boy back in his beloved car. I knew the vacuum fittings on the top of the engine were getting hard and brittle as they’re known to do, but I didn’t think any of them were leaking yet. I’m going to dig around on the internet and see if I can find the plan for a DIY smoke tester - this is something that is a big help and could use occasionally. More as I know it…. Dan ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] S500 Mystery
Dan writes: >see if I can find the plan for a DIY >smoke tester - this is something >that >is a big help and could use >occasionally. > You are working on a Mercedes, correct? I thought the smoke detector was used exclusively on Lucas electrical parts. Although, it is usually quite obvious where the smoke is leaking on those... http://www3.telus.net/bc_triumph_registry/smoke.htm Scroll to the bottom of this one... http://gtr1000.yuku.com/topic/4957 Rick Sent from my BlackBerry Z10 ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
[MBZ] S500 Mystery
Got the car back from the trusted indie shop. They spent two hours of diagnostic time on it and found that the MAF is probably bad and there are a number of vacuum leaks in all of the lines that run across the top of the engine and probably the boot at the bottom of the MAF. This is good news, as we know the wiring harness is good and they confirmed that. I just happen to have a spare MAF that someone gave me for free for the S420, and even better, it’s the SAME part on the S500. Woo-hoo!! The car comes home tonight, after which I’ll survey the vacuum lines and elbows that have to be replaced and make a parts list for my dealer parts guy on Monday. I’ll have him VOR (overnight) the parts so we have them on Tuesday and Tuesday night we’ll reassemble everything and get the boy back in his beloved car. I knew the vacuum fittings on the top of the engine were getting hard and brittle as they’re known to do, but I didn’t think any of them were leaking yet. I’m going to dig around on the internet and see if I can find the plan for a DIY smoke tester - this is something that is a big help and could use occasionally. More as I know it…. Dan ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
