TRACTOR PARTS Allis Chalmers Case & David Brown Farmall & International Ferguson Ford & New Holland John Deere Massey Ferguson Massey Harris Minneapolis Moline Oliver & Cockshutt Kubota / Yanmar

TRACTOR MANUALS

Allis Chalmers	Case	Farmall IH	Ford 8N,9N,2N	Ford
Ferguson	John Deere	Massey Ferguson	Minn. Moline	Oliver

Farmall & IHC Tractors Discussion Forum

706 diesel questions

Welcome Guest, Log in or Register

Author

Brandon D'Avis

04-11-2008 19:27:49

Report to Moderator

Ok so I have this IH706 diesel, I just rebuilt the motor,and it seems like it starts hard...but I finally got it to start,but it seemed like it was running way to fast,so I shut it off. Could it have been that there was alot of built up fuel that when it started it finally burnt the excess fuel and thats why it wanted to run so fast? What would you do? Start it again and see what happens?
Also,what would cause the hard starting,it was 65 degrees out and I was using the glow plugs?Does it need to get broken in to start easier? I have never heard one of these run before so I just want to be on the safe side,and not hurt the rebuilt motor.

It has the 282 diesel if that helps.

Any help is appreciated.

Thank you!
Brandon

[Log in to Reply] [No Email]

HeyPigFarmer

04-13-2008 11:05:19

Report to Moderator

Re: 706 diesel questions in reply to Brandon D'Avis, 04-11-2008 19:27:49

Does your tachometer work? If it does, start the thing up and watch the tach. You will never know what will happen unless you start it again so crank that thing up.
To make sure it doesn't run away, have someone else there to cover the air intake. It won't run without air.
Reminds me of working on an 8-92 detroit. Started it after sitting a long time and the rack was stuck open, threw a phone book over the intake, sucked that thing right in, used a piece of 1/2 inch plate steel next.

[Log in to Reply] [No Email]

Brandon D'Avis

04-12-2008 20:51:06

Report to Moderator

Re: 706 diesel questions in reply to Brandon D'Avis, 04-11-2008 19:27:49

All the linkages seem to move freely,and moving the arm on the pump,and it moves the other arm too.

When rebuilding the engine, The head was magnafluxed,resurfaced,
and they seated the valves. Using new valves. they
said that everything that was needed was fixed on it.

When cranking it,I do get smoke.So I think it is getting fuel? Sorry, new to diesels here.

When it started it was running for maybe 15-20 seconds.
But just seemed to run very fast,almost out of control
and I didnt want to hurt anything.

So if it was yours would you start it again and
see what happens? Is there anyway I can assure myself
that it will not "run away" when it starts?

Sorry for all these questions,just new to diesels.

If only it was gas..... ....then I would know what I was doing.

Thank you!
Brandon

[Log in to Reply] [No Email]

282

04-12-2008 18:19:38

Report to Moderator

Re: 706 diesel questions in reply to Brandon D'Avis, 04-11-2008 19:27:49

Every 282 diesel that I have ever been around has to have the glow plugs on the first start no matter what the temperature is. Ours will start down to about 0 with only the glowplugs. Oviously you don't have to use them as long the warmer it is. About 30 seconds is enough when the temperature is above 45 to 50. The colder it gets the longer you have to use them, sometimes a couple minutes.

[Log in to Reply] [No Email]

Owen Aaland

04-12-2008 10:38:08

Report to Moderator

Re: 706 diesel questions in reply to Brandon D'Avis, 04-11-2008 19:27:49

Excess fuel on top of the pistons will not cause the engine to run faster. The fuel need to be atomized by injectors before it will burn. This happens in the precombustion chambers, not in the cylinders.You may get more smoke but it is highly unlikely that the speed will change much. Check the injection pump linkage to make sure the throttle arm on the pump is returning against the low idle speed adjustment screw. It also need to travel to the high idle speed stop.

How far did you go in rebuilding your engine. Was the cylinder head reconditioned so that the valve recession is at the minimum? To make them start easier the closet you stick with the original spec of .003 recession from the head surface the better they will start. If all that was done was to resurface the seats and valve faces then it will probably never start very well.

Do you get smoke while cranking? If not, were the injectors reconditioned? Resetting the injector opening pressure can cause problems with a worn pump.
At 70 degrees or with a warm engine,holding the glow plugs on for 30 seconds may be enough. As the temperatures drop, you need to energize the glow plugs for a longer time. If it gets below freezing you may have to have tthem on for a couple of minutes to get it to start.

[Log in to Reply] [No Email]

Steven f/AZ

04-12-2008 09:19:07

Report to Moderator

Re: 706 diesel questions in reply to Brandon D'Avis, 04-11-2008 19:27:49

Are you sure all the glow plugs are working properly? I seem to remember a full minute being mentioned once for a cold-start...

If it didn't start right away, it's possible some fuel washed the cylinders causing the compression to go down... I'd try starting again and watch the tach to see if it is running too fast.

[Log in to Reply] [No Email]

Gary,kansas

04-11-2008 20:10:22

Report to Moderator

Re: 706 diesel questions in reply to Brandon D'Avis, 04-11-2008 19:27:49

Make sure there is no air in those lines, make a mess if you have to, it won't start until you get fuel in it, and sometimes you have to crank for a while. Does that tractor have a hand pump? if it does it will speed up the process.

[Log in to Reply] [No Email]

ejr-IA

04-11-2008 19:58:45

Report to Moderator

Re: 706 diesel questions in reply to Brandon D'Avis, 04-11-2008 19:27:49

Make sure timeing is right and that every glow plug works correctly and held down for the appropriate time.

[Log in to Reply] [No Email]

Gary,kansas

04-11-2008 19:41:38

Report to Moderator

Re: 706 diesel questions in reply to Brandon D'Avis, 04-11-2008 19:27:49

Did you happen to use ether, it sometimes is a thought you might have and should not act upon. Was there fuel on top of your pistons? Were your cylinder walls lubed?

[Log in to Reply] [No Email]

Brandon D'Avis

04-11-2008 22:00:41

Report to Moderator

Re: 706 diesel questions in reply to Gary,kansas, 04-11-2008 19:41:38

Gary,Yes,all the lines and filter have been bled/primed.
It doesnt have a hand pump,wish it did though.
yes the cylinder walls were lubed during re-assembly.

EJR, the timing is correct,and double checked.
Same with the glow plugs,they all work.
How long should they be held down for? I held them down
for 30 seconds.

[Log in to Reply] [No Email]

SamCVT

04-13-2008 06:14:44

Report to Moderator

Re: 706 diesel questions in reply to Brandon D'Avis, 04-11-2008 22:00:41

The manual says up to a minute and a half on a cold day. That is a long time to sit still and hold a button - I slowly count to ten multiple times to keep from getting too impatient.

[Log in to Reply] [No Email]

Gary,kansas

04-12-2008 09:10:19

Report to Moderator

Re: 706 diesel questions in reply to Brandon D'Avis, 04-11-2008 22:00:41

Brandon, I was always told your 30 seconds was the correct amount of time. The ether question was brought up because I have had them over rev, I know, usually they turn hard with ether, but I'm fairly sure if my memory serves me right, the over rev was after frustration and an aggresive approach. My other concern you had covered with the cylinder wall lube. If it's timed right, it is most likely fuel. INJECTOR PUMP?

[Log in to Reply] [No Email]

[Options] [Printer Friendly] [Posting Help] [Return to Forum] [Log in to Reply]

TRACTOR PARTS	TRACTOR MANUALS

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

Home | Forums

Copyright © 1997-2023 Yesterday's Tractor Co.
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters

Website Accessibility Policy