Glow plugs vs relay on 200Tdi - Page 2 - Defender Source
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  #21  
Old December 12th, 2013, 01:16 PM
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If gelling is the problem, get Powerservice 911 as it melts gelled fuel. The normal stuff only prevents gelling.
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  #22  
Old December 12th, 2013, 01:40 PM
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My experience has been that a tdi will start below 20 degrees F with no glow plugs. I doubt that your fuel is gelling up in Alabama. My guess is fuel filter or injector tips are shot.
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  #23  
Old December 12th, 2013, 01:44 PM
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99.99% of diesel problems can be traced to dirty fuel. Clean the system from tank to injectors. As Doug sez you probably need the nozzles serviced. It'll run like a new truck.
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  #24  
Old December 12th, 2013, 02:00 PM
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Good news. Thanks. I'm about to add the cetane booster & assume it's a fuel problem.

I probably should replace fuel filter anyway, just in case. Another dumb question - can I get the fuel filter locally, like at an Autozone, or does it have to be ordered?
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  #25  
Old December 12th, 2013, 02:05 PM
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Maybe. Same as any 1980 to 84 VW diesel. Also common on a lot of industrial equipment. Bosch 1 457 434 106, Mann WK 842/2

Assumning you have a correct stock 200TDI filter.
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  #26  
Old December 12th, 2013, 04:48 PM
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Is there a way to test the glow plugs with an ohmmeter??
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  #27  
Old December 12th, 2013, 05:27 PM
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Originally Posted by DannyboyUpstate View Post
Is there a way to test the glow plugs with an ohmmeter??
Google it. Plenty of how to's.
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  #28  
Old December 12th, 2013, 05:29 PM
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Quote:
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Google it. Plenty of how to's.

I guess my point is, why would people say to check out the glow plugs by taking them out and looking at how hot they get when you can do it with an ohmmeter?
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  #29  
Old December 12th, 2013, 05:57 PM
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I guess my point is, why would people say to check out the glow plugs by taking them out and looking at how hot they get when you can do it with an ohmmeter?
Quite a few people have no idea what an ohm or an ohm meter is let alone own one.
Everybody knows what a glowing red piece of steel looks like.
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  #30  
Old December 12th, 2013, 06:57 PM
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Download the workshop manual.... Read it. Testing by ohmeter is fine, although not 100%. Also make sure you are getting 12V at the plugs when you are supposed to.
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  #31  
Old December 13th, 2013, 11:17 AM
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Well it's not the fuel. Darn it. Once it finally cranked yesterday I ran it around to burn off the fuel I had (it ran purrrrfectly, wonderful) & then put in Power Service Diesel Fuel Supplement with fresh diesel, & ran it around some more to get that fuel in the system. This morning, no cranky.

Roll starting it doesn't work either, btw.
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  #32  
Old December 13th, 2013, 11:38 AM
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Quote:
Originally Posted by Axel View Post
Well it's not the fuel. Darn it. Once it finally cranked yesterday I ran it around to burn off the fuel I had (it ran purrrrfectly, wonderful) & then put in Power Service Diesel Fuel Supplement with fresh diesel, & ran it around some more to get that fuel in the system. This morning, no cranky.

Roll starting it doesn't work either, btw.
True baloney. You cannot expect to clean out the fuel system by putting diesel additive in the tank. Those products are only effective at removing money from your wallet.
You must unbolt the injectors and take them to a diesel shop for cleaning and repair if necessary. You must fit new filter elements, and be sure the timing is spot on.
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  #33  
Old December 13th, 2013, 12:10 PM
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Power service won't clean anything, but it will lower the cloud point for untreated fuel if it is cold enough to matter.
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  #34  
Old December 13th, 2013, 12:13 PM
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Originally Posted by o2batsea View Post
True baloney..
It will prevent the fuel from gelling, which was one possible cause for the cold start problems that he was trying to rule out.

The type of nozzles used in these trucks can't be cleaned. They need to be replaced if the pattern is bad.
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  #35  
Old December 13th, 2013, 12:41 PM
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Hmm. does it get to ten below in Alabama?
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  #36  
Old December 13th, 2013, 12:51 PM
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Hmm. does it get to ten below in Alabama?
Bill. I suggest you read the whole thread. This has all been discussed.
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  #37  
Old December 13th, 2013, 07:23 PM
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I don't know if it's ever been to 10 below here since the Little Ice Age. But it's in the '20's here at night.

If my problem were compression or fuel injector or injector tips, wouldn't it also run rough, even when warm? It runs perfectly once warm.
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  #38  
Old December 13th, 2013, 07:41 PM
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No. Once warm the diesel will run fine with less than perfect conditions.
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  #39  
Old January 6th, 2014, 12:07 PM
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Just to put a "conclusion" on this thread, for the benefit of those searching later...after adding Cetane, my issue turned out to be glow plugs, but then it still wouldn't crank. So I made a separate glow plug circuit using a Ford starter solenoid (I think Uncle Douglas mentioned this), triggered by a Carling V-series switch on the dash (& in the process learned that if you want the Carling switch to light, such as if you want to know when the glow plug is on, you have to wire a separate ground & power connection to terminals 7 & 8 above - the power from the device won't do it.) It still wouldn't crank, but then I discovered that the ground wire from the alternator to chassis had frayed along its backside. You couldn't see it. Fortunately (!) it started smoking & that showed us the problem. Meanwhile, the ground from the battery had come off. So, in addition to the things mentioned above, if you're having cold-weather-starting issues, check things like ground straps & battery cables.
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  #40  
Old January 6th, 2014, 01:00 PM
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Quote:
Originally Posted by Red90 View Post
Download the workshop manual.... Read it. Testing by ohmeter is fine, although not 100%. Also make sure you are getting 12V at the plugs when you are supposed to.
As Red says, but a glow plug can still be bad testing with an Ohmeter, you need to remove, hook up 12v and in not MORE than 7 seconds the tip should be white hot, if its red no gooda, if the middle is red no gooda, its got to be the tip that's white hot.

older systems used a seven volt glow plug but I would think they are all gone now?
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