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#1
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Glow Plug Help
Hi, replaced my glow plugs last weekend and two look really strange. Last summer the mechanic had the car for two months and returned it running better, but not perfect and said something was wrong with #4 but could figure it out. It smokes a bit, keeps excellent oil pressure (even when hot) has 220K (actual) on it, and seemed like it was missing. Last spring I did a compression test on it and four of the cylinders were in the 310-320 range #4 was lower than the others (290). Perked up with a little oil squirted into it. Figured I'd drive it. With weather getting colder and dash glow plug light no longer working, it was time to replace the plugs. Reamed out all the plug areas, and replaced with new. Car started much easier, but still smokes quite a bit. #1 plug looks like the tip is bent. Hard to tell from the picture, but #4 glow plug looks like the end was flattened an someone cut a "v" into it. My injectors are have less than 20K on them, but could this be caused by bad injectors dumping fuel on them?
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#2
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Some weird **** going on there.
__________________
1977 300d 70k--sold 08 1985 300TD 185k+ 1984 307d 126k--sold 8/03 1985 409d 65k--sold 06 1984 300SD 315k--daughter's car 1979 300SD 122k--sold 2/11 1999 Fuso FG Expedition Camper 1993 GMC Sierra 6.5 TD 4x4 1982 Bluebird Wanderlodge CAT 3208--Sold 2/13 |
#3
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... I recommend you take some MACRO photo's of those mashed plugs and post them here!
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!! 1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere! |
#4
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If the Injector Nozzle is worn and spraying on the Golw Plug it can melt and even cut off the tip of a Glow Plug and even burn through the Prechamber.
Take a good look and see if the tips of the #1 and #4 looks like it is being burned off. Also if some of those Glow Plugs are Autolite Glow Plugs; after 6 months use I had 2 of my Autolite Glow Plug tips swell up to the extent that I had trouble removinging them from the Head. I have also seen pics on one of the forums where it looked as iff the Autolite Glow Plug tips had explodded.
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84 300D, 82 Volvo 244Gl Diesel |
#5
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Hey can you put a ohm meter on those & post readings?
Have you tried to see if they still glow? Purely for interest. I have seen worse You would be very foolish not to replace all of them
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Grumpy Old Diesel Owners Club group I no longer question authority, I annoy authority. More effect, less effort.... 1967 230-6 auto parts car. rust bucket. 1980 300D now parts car 800k miles 1984 300D 500k miles 1987 250td 160k miles English import 2001 jeep turbo diesel 130k miles 1998 jeep tdi ~ followed me home. Needs a turbo. 1968 Ford F750 truck. 6-354 diesel conversion. Other toys ~J.D.,Cat & GM ~ mainly earth moving |
#6
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Mashed is definitely the way to describe number 4 (and clipped - with wire cutters. I'll post new pictures, but can't until Saturday. Not sure what brand they were all installed by mechanics. I did the new ones, and they are Monarks. I just don't want to kill the new ones if it's an injector issue, and I never thought about a prechamber issue - how can these be diagnosed?
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#7
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The deformed glow plug from #4 is shown first. Was going to show the deviated one from #1 , but can't get the file resized to upload. The #4 (shown) is the one I'm most concerned with. Any thoughts? Would like some opinions before running it again. (don't want to mess up the new glow plugs)
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#8
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I would suspect either the injector is cutting through it or some debris in the prechamber causing it. I suggest pulling the prechamber and inspecting it for damage.
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1983 123.133 California - GreaseCar Veg System |
#9
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Quote:
I know that after 6 Months of use 2 of my Autolite Glow Plugs had tips swollen enought that I had a lot of trouble pulling them out. And the above happend in an Engine with Injectors that I had previously rebuilt with new Injector Nozzles. I Have had no more issues with swollen Glow Plug tips since I got rid of the Autolites.
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84 300D, 82 Volvo 244Gl Diesel |
#10
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Since the deformed tip of the plug seems slightly wider than the rest of the body of the plug, I'm thinking that the problem was caused from the inside out rather than from the outside in. Hence it must have exploded rather than been eroded by a faulty injector???????
__________________
1977 300d 70k--sold 08 1985 300TD 185k+ 1984 307d 126k--sold 8/03 1985 409d 65k--sold 06 1984 300SD 315k--daughter's car 1979 300SD 122k--sold 2/11 1999 Fuso FG Expedition Camper 1993 GMC Sierra 6.5 TD 4x4 1982 Bluebird Wanderlodge CAT 3208--Sold 2/13 |
#11
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Another concern
Thanks for the input, while thinking about this, another concern came up. Is the end of that glow plug (or glow plugs because the last mechanic to work on it noted the plug he pulled out was "weird") floating around in my prechamber causing problems? I don't want to go after stuff that's not there, but the engine was not running that well before.
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