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7010 Engine Surge?
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Roscoe62 View Drop Down
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Joined: 22 Aug 2014
Location: Louisville
Points: 145 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Roscoe62 Quote  Post ReplyReply Direct Link To This Post Topic: 7010 Engine Surge?
    Posted: 14 Aug 2018 at 3:38pm
My 7010PD (with an L-Combine Simms Injection Pump) started surging today.  I am a novice with Diesel engines. 

Any common issues that cause this?  It is really noticeable at low to mid RPM with the tractor stopped ( no engine load)

I just replaced the fuel filter and installed a new turbo.  The air filter looks ok and I cleaned it out about 10 engine hrs ago.

It does not overheat and I can see any thing out of order.

I put the turbo and new filter on at 5100 engine hours and it has 5120 hours now.

Thanks, 
Roscoe.   
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Calvin Schmidt View Drop Down
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Joined: 11 Sep 2009
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Points: 4550 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Calvin Schmidt Quote  Post ReplyReply Direct Link To This Post Posted: 14 Aug 2018 at 5:23pm
I have a 426 On Highway Spec engine with a Simms pump in my 220. It will surge at a slow idle. Crack the throttle a little and it smooths out. I'm sure it's the governor.  
Nothing is impossible if it is properly financed
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Ron(AB) View Drop Down
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Joined: 27 Dec 2009
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Points: 962 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Ron(AB) Quote  Post ReplyReply Direct Link To This Post Posted: 14 Aug 2018 at 7:51pm
I've got a 7000 that runs with a lope at low rpm but it has almost double the hours. So that could be expected?

At 5000 hours it should still run smooth.   I would suspect the governor...check valve...fuel line...hose clamp..or any fitting in-between. Does everything look clean?
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MACK View Drop Down
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Joined: 17 Nov 2009
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The Simms pump on a combine would about shake the combine apart.       MACK
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Roscoe62 View Drop Down
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Points: 145 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Roscoe62 Quote  Post ReplyReply Direct Link To This Post Posted: 15 Aug 2018 at 4:09am
 I will check all the fittings this morning.  The #1 outlet fitting on the pump does look wet.

This surging is new, it just started, so this is not normal.

But most likely a pump or fuel problem, and not a turbo or air problem?

Thanks!
Roscoe.
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DougG View Drop Down
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Joined: 20 Sep 2009
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Points: 8369 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DougG Quote  Post ReplyReply Direct Link To This Post Posted: 15 Aug 2018 at 6:36pm
Get it all rebuilt ! No problems then
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SteveM C/IL View Drop Down
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Joined: 12 Sep 2009
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Points: 8667 		Post Options Post Options   Thanks (0) Thanks(0)   Quote SteveM C/IL Quote  Post ReplyReply Direct Link To This Post Posted: 15 Aug 2018 at 10:29pm
Govenors in Simms pumps are known to wear and cause issues like you describe. My 545B loader w/301 has it and  surges at idle. If you ever seen the govenor you'd just shake your head.
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