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| Glow plug replacement interval http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=5&t=46903 |
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| Author: | Squeeto [ Sat Oct 03, 2009 11:07 pm ] |
| Post subject: | Glow plug replacement interval |
Just thought with all the recent posts about failing glow plugs, would a glow plug replacement interval be a good idea. It seems as though most of the damage is done at the time the plug goes bad. Maybe consider the glow plug module(s) as well. |
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| Author: | ATXKJ [ Sun Oct 04, 2009 8:32 am ] |
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I'd be very hesitant. mine lasted 65,000 miles before it started having Glow plug problems - and then - about the 4 dead plug on cyl #2 - STAR recommend changing all 4 and they broke one required removing the head to fix. so they last a long time if you don't have a problem and just removing a glow plug carried the risk of having to pull the head. maybe if you wanted to change them at the time you change the timing belt so that the cams and crank are already locked in position - pulling the head would be less additional work. |
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| Author: | nursecosmo [ Sun Oct 04, 2009 11:55 am ] |
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A glow plug relay replacement program would probably be a better option, since the failure mode is reported to be caused by the relay getting stuck. |
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| Author: | nursecosmo [ Sun Oct 04, 2009 12:43 pm ] |
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My pulley is chirping pretty badly and I have to replace it. I was planning on ordering one from IAT but am having second thoughts. I am leaning towards an ordinary pulley, even though there may possibly be more wear on the alternator and tensioner. Someone here had put a solid pulley on at one time. Perhaps they could chime in about where it was purchased. |
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| Author: | Squeeto [ Sun Oct 04, 2009 1:12 pm ] |
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Quote: mine lasted 65,000 miles I was thinking to replace every 60,000 miles. Quote: changing all 4 and they broke one
Maybe apply some PB-Blaster over a few hours before attempting to remove. Also if you have the yellow ceramic glow plug tag (all of us?), you may want to exchange for the metal Bosch plugs anyways. |
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| Author: | Silverdiesel [ Sun Oct 04, 2009 1:27 pm ] |
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GP interval change? Module failure? FWIW here's an observation, Nowhere is stated a change of GP's intervalwise and as folks get mechanics and themselves to even pulling bad ones bad circumstances happen right up to head replacement and yikes!~engine replacement. But now here's a statement on that timing module running too long and it does not take much to hyperextend these plugs. The module allows NO time on interval on warm starts (i e warm mornings)~ you do not even see the GP squiggly symbol on the dash. And even on cold starts the GP lite stays on less than 1/2 second. So a good monitor to notice if that "pigs tail" lite stays on or flashes on non cold starts then you have a bad module and are on the way to plug fail. I guess its good to say whomever changes said glowplug(s) to BE VERY CAREFUL and if GP's come out shattered/ missing chunks to be vary of more repair and expense. And most diesel mechanics I know are pretty rough fellas. It was noted here on forum a while back was an interval change on items like the CVV valve every 50K miles but I have not heard of a glowplug interval. Roland |
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| Author: | CATCRD [ Sun Oct 04, 2009 3:57 pm ] |
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nursecosmo wrote: My pulley is chirping pretty badly and I have to replace it. I was planning on ordering one from IAT but am having second thoughts. I am leaning towards an ordinary pulley, even though there may possibly be more wear on the alternator and tensioner. Someone here had put a solid pulley on at one time. Perhaps they could chime in about where it was purchased.
OT, but the solid pulley didn't work. The oscillations in belt tension actually unscrewed and threw the pulley in seconds. http://www.lostjeeps.com/forum/phpBB3/vie ... 7&start=60 |
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| Author: | nursecosmo [ Sun Oct 04, 2009 6:11 pm ] |
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CATCRD wrote: nursecosmo wrote: My pulley is chirping pretty badly and I have to replace it. I was planning on ordering one from IAT but am having second thoughts. I am leaning towards an ordinary pulley, even though there may possibly be more wear on the alternator and tensioner. Someone here had put a solid pulley on at one time. Perhaps they could chime in about where it was purchased. OT, but the solid pulley didn't work. The oscillations in belt tension actually unscrewed and threw the pulley in seconds. http://www.lostjeeps.com/forum/phpBB3/vie ... 7&start=60 It wasn't the oscillations which threw tomasnc's pulley (every other 4 cylinder diesel engine has solid pulleys and they do just fine), it was because the replacement solid pulley didn't leave enough threads to tighten it down. Has anyone else found a correct sized solid pulley to fit the CRD? What do the gassers use? |
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| Author: | Squeeto [ Sun Oct 04, 2009 9:04 pm ] |
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Silverdiesel Quote: but I have not heard of a glowplug interval. I googled "Bosch 80041", the after-market replacement glow plug and the first hit shows www.summitracing.com/parts/BCH-80041/. At the bottom they have- Quote: Make Bosch glow plugs a part of every diesel tuneup. Regular preventive maintenance keeps your diesel vehicle running right, and can save you the cost and inconvenience of unexpected repairs down the road. When it's time for a tuneup, be sure to include a new set of Bosch glow plugs with Duraterm technology, to deliver superior cold-start performance. Bosch glow plugs reach higher temperatures more quickly for fast engine start-up. Bosch uses Inconel 601 material for the glow plug element; this material has superior anti-corrosion properties, and withstands vibration for long service life. Silverdiesel Quote: Nowhere is stated a change of GP's intervalwise
Now I know that they are in business to make money and every tuneup?! but how often do we trust DC recommendations? |
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| Author: | Joe Romas [ Mon Oct 05, 2009 7:04 am ] |
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[quote="nursecosmo"]...(every other 4 cylinder diesel engine has solid pulleys and they do just fine)/]quote] At a VW TDI GTG I saw a 96 Passat TDI (4 cylinder) who's owner changed the solid alternator pulley with a clutched one. The operational difference was night and day 
Why would you want to take a step backwards 
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| Author: | nursecosmo [ Mon Oct 05, 2009 7:45 am ] |
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Joe Romas wrote: nursecosmo wrote: ...(every other 4 cylinder diesel engine has solid pulleys and they do just fine)/]quote] At a VW TDI GTG I saw a 96 Passat TDI (4 cylinder) who's owner changed the solid alternator pulley with a clutched one. The operational difference was night and day Why would you want to take a step backwards In the case of our CRDs, the clutched pulleys are nothing but headaches. |
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| Author: | dirtmover [ Mon Oct 05, 2009 8:24 am ] |
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Silverdiesel wrote: So a good monitor to notice if that "pigs tail" lite stays on or flashes on non cold starts then you have a bad module and are on the way to plug fail. It's not this simple. If you look at the FSM you'll see that, depending on temperature, the GP's can burn for up to 200 seconds post startup and the light is always extinguished when it's "ready to start". The light is clearly driven by the ECM rather than directly by the GP control circuit thus failure of this circuit could continue to burn the GP's without any indication. What you need to monitor is the voltage applied to the GP. Silverdiesel wrote: It was noted here on forum a while back was an interval change on items like the CVV valve every 50K miles but I have not heard of a glowplug interval.
I think the MTBF is probably extremely difficult to predict based on miles travelled. A better indication may come from the ECM tracking burn time but even then there appears to be a huge spread in lifetime. |
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