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Old 10-27-2006, 01:36 PM   #1
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Diesel Starting Problem - Question

Hi guys,
I know some of you have the DT-360 so I'm hoping you can help me as I have little to no knowledge of diesel engines.

I recently bought a 1984 International S-1700, 27 passenger and the paperwork states it has a DT-350 engine. Thing is, it doesn't want to start without a shot of ether to get it going. In fact, I've never gotten to start without a squirt of go juice first. Maybe I'm not cranking it long enough but when the starter sounds like it's starting to slow or drag I just give up and give it a squirt. Try starting again and after a few rotations it starts right up. I was thinking it might be a glow plug(s) problem but after searching the site it appears it could also be an injector pump or fuel lift? problem. I'm still thinking maybe glow plug(s) as it would take less "spark" to fire off the ether than the diesel fuel. So... can anyone tell me where the glow plug(s) are, how many there are and where I can get replacements as well as what to ask for? Guessing... next to the injectors and 1 per cylinder but better to ask than not. And even if I'm guessing right I still have no idea where I might acquire new ones and what exactly I should ask for and I don't expect the guys at the auto parts stores would be of much help although I could be wrong there too.
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Old 10-27-2006, 03:37 PM   #2
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I always turn the switch on and let the glow plug cycle before giving it a squirt but I know what you mean. That's why I'd really like to get it starting on it's own. The less ether I have to use the better I like it.

Thanks.

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Old 10-27-2006, 08:28 PM   #3
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I have worked on diesel engines for about 16 years. But they have all been with Cat. So here is my first question?????? When you start to crank it over do you get smoke out the exhaust right a way. Next how fast is the starter turning over the engine???? Speed of the starter speed is BIG.....If it only starts hard when it's cold then I would check the glow plugs. I not sure if that engine just has a intake heater or plugs someone else might know that...I think that your fuel is bleeding back or your starter is not turning fast enough. With starting fluid it gets it turning faster. Good luck.....
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Old 10-27-2006, 10:35 PM   #4
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Sounds like glow plugs to me too. Might only be one or two that are bad... At the age of the unit it wouldn't hurt to replace them all...though that can be little costly as glow plugs are NOT cheap!!
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Old 10-28-2006, 09:50 AM   #5
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Does the DT360 have them? I know the larger IH inline sixes (DT408, Dt466) don't.
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Old 10-28-2006, 11:57 AM   #6
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Quote:
Originally Posted by babylon42
I'll let the guys who know what their talking about tackle your question, but I wanted to say to be careful with using the ether - afaik it's not really reccomended for diesels - i've seen a big diesel tractor blow an engine while trying to get it running with ether.
Ford recommends using it right in their manual for the 6.6 and 7.8 I-6 diesels The reason most manufacturers don't recommend it is because it doesn't take much to ignite it. An intake grid heater or glowplugs would light up ether pretty quick. The reason you can get away with it on the Brazilian Fords is that they don't have either and need any help they can get to start when it's sub-freezing out. That said, I've only had to use it once.
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Old 10-28-2006, 03:15 PM   #7
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The the international dt 360 does not have glow plugs, not any of the engines that i've ever seen. The 7.3 litre or the 6.9? international v8's do have glow plugs.

There could be lots of things causing the problem, but if you do have a dt360 my guess is that there is a small hole in the fuel line letting air into the system. Try priming the enging using the plunger on the side of the lifer pump before starting the engine next time and see if that helps. When you move the plunger up and down you should feel it pushing fuel through the system. If it goes up and down with little or no resistance then my guess is that you have a hole in the fuel line and it's sucking air.
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Old 10-28-2006, 05:45 PM   #8
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Thanks for the help guys.

Kirbystud - No smoke out the back until she starts. Then she smokes for a little while before she quits. White... I think.

lapeer20m - I'll check it out to see if there's a leak allowing air into the fuel lines. I'll even try your suggestion of priming using the lifting pump... except I gotta find it first. Told you I knew nothing of diesels.

BTW: How do you know which body you have?

I know I mentioned the DT-360 because I've seen a lot of postings related to them but the seller of mine bus listed the engine as a DT-350. Not sure what the difference is between the 350 and 360. Anybody know?
Thanks again!
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Old 10-28-2006, 09:49 PM   #9
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I think the seller either had a dypo....er...typo or they just didn't know what they were talking about.

The plnuger will be right on the injector pump. Just follow all the fuel lines from the injectors back down and you'll find the pump. It's a big thing hanging off the side of the block. The plunger will look like a little wheel. If it's like mine, you will have to turn it a few times to get it to pop up. Then pump away, push it down, screw it down, and crank. Don't be surprised if you have to pump for a while. It's a small pump and you might need to move a lot of fuel.
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Old 10-30-2006, 07:22 AM   #10
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the_experience03 - Thanks! Your directions make it sound like a piece of cake and they make perfect sense. I should have thought of following the lines. I appreciate it!
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