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282 rebuild problem

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dennis savela

07-04-2003 14:31:08




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got my engine running finally but it will only run with glow plugs on and its 93 today. also when i go above 1/8 throttle it loads up sputters and backfires timing is dead on playing with timing does not help. i bought a remfg head cause mine was cracked, was told if valves are to far recessed this is my problem, heads that have been redone many times causes the valve to be moore recessed and thus you have less compression, any thougts on this? i need help, you guys got me finally starting now came i finish this !@#$%^& project?? help

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Hugh MacKay

07-06-2003 16:19:05




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 Re: 282 rebuild problem in reply to dennis savela, 07-04-2003 14:31:08  
Dennis: I was confident this could happen in your favour. When I last used 282 diesels these problems had not yet surfaced. good luck.



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Jim

07-06-2003 10:39:02




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 Re: 282 rebuild problem in reply to dennis savela, 07-04-2003 14:31:08  
What is the number on your precups? I have found a set of precups out of a D301 in a D282 and that makes them very hard starting.



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Jim

07-05-2003 10:45:11




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 Re: 282 rebuild problem in reply to dennis savela, 07-04-2003 14:31:08  
Most UD282 power units had electric fuel shut offs. Do you happen to have the electric fuel shut off hooked up with the glowplugs?



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dennis

07-05-2003 18:30:56




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 Re: Re: 282 rebuild problem in reply to Jim, 07-05-2003 10:45:11  
no electric pump shutoff solenoid, removed head today found valve recession all over the place from .025 to .058, also remfg head measures .025 out of tolerance on total thickness who ever did this head obviously isnt a machinist, gotta ship it back i guess suppose to call me monday thanks for the reply,,dennis



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Jim

07-05-2003 09:57:23




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 Re: 282 rebuild problem in reply to dennis savela, 07-04-2003 14:31:08  
Check the pre cups under the injectors and make sure that you have them in correct - should be marked on side of precup which side goes up. If are in wrong will put the fuel in the wrong place on piston and not run right.



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dennis

07-05-2003 18:33:07




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 Re: Re: 282 rebuild problem in reply to Jim, 07-05-2003 09:57:23  
already double checked myself on that cups are in with the up up thanks



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Klein Rot

07-05-2003 09:46:52




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 Re: 282 rebuild problem in reply to dennis savela, 07-04-2003 14:31:08  
Hi,
Have you mounted the injector nozzeles the correct way, because you can mount them with the glow plug end for the precombustioncamber inlet and than the hot air flow is blocked.
We had the same problem with an 706 diesel we turned the injectornozzels and the problem was solved.



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dennis

07-05-2003 18:37:01




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 Re: Re: 282 rebuild problem in reply to Klein Rot, 07-05-2003 09:46:52  
already pulled head and found vale recession very poor they range from .025 to .058, and all $#@!%up
which way is the correct way to mount injector?glow plug on top or bottom?



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Brian in MO

07-05-2003 07:22:54




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 Re: 282 rebuild problem in reply to dennis savela, 07-04-2003 14:31:08  
Sounds like K.B. has some good advice I would take the injectors out and find a good Case-IH dealer to get them test them if the dont spray a really good pattern this could cause excess fuel in the cylinder which could be the problem.



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K.B.

07-04-2003 17:48:54




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 Re: 282 rebuild problem in reply to dennis savela, 07-04-2003 14:31:08  
Valve recession can definetly cause starting problems, but I would think that once it got running it would stay running. There should be a spec. in your manual for max valve recession. Do you have the valve lash set correctly (double check even if you are sure)? Have you done a compression test and leak-down test? How long are you running the glow plugs before and after starting? Give them about a minute before starting, even on a 90 degree day, and keep them on until the smoke clears up. Are all of the glow plugs working? These engines absolutly must have good glow plugs. Are you sure the fuel lines are fully blead? Did you stagger the piston ring end gaps?

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dennis savela

07-04-2003 19:40:38




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 Re: Re: 282 rebuild problem in reply to K.B., 07-04-2003 17:48:54  
i have to keep the glowplugs on all the time or the engine will die, i have wired 10 ga wire and hook directly to battery, then i run my battery charger off my gas generator and then start the diesel, it runs smoothly but when i accelerate above 1/8 throttle it loads up and will die if i dont let off the throttle 5 seconds after i shut off glows it will die, yes i staggered the rings and it feels like i have great compression, what should i have, how much valve recession is allowable? help im at wits end, dennis

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K.B.

07-04-2003 22:00:00




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 Re: Re: Re: 282 rebuild problem in reply to dennis savela, 07-04-2003 19:40:38  
How long have you run it total? Almost sounded like a fuel problem, but since you say it will not run without the glow plugs, it's starting to sound like you are low on compression. Actually, it sounds like a fuel and compression problem. Get yourself a manual from the nearest Case-IH dealership, double check the valve lash, Do a compression test, start it up and crack each injector line loose one at a time to bleed air out. If that dosen't get you going, then it's time to let an old IH mechanic who worked on a lot of 560 Diesels look at it. Possible that the fuel pump and injectors need to be tested. What does the exhaust smoke look like?

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