|
| |
| Minneapolis Moline Tractors Discussion Forum |
Topic: 670 Diesel miss
[Return to Forum]
| Author |
[Modern View]
|
| Joe Pro
10-03-2012 20:42:21
199.167.231.209
|
My 670 super diesel has never ran quite right. It runs decent at higher rpm's but has varrying speed at lower rps's. I have replaced the filters many times and put a pickup tube in the fuel tank. I have bleed the system many times also. When I first start it, it surges a bit. It seems that number one and two cylinders are colder to the touch than the back two. When bleeding the injectors, when I crack number 4 at an idle the engine will die and it will not when the fromt three are cracked. I'm not sure if it is an energy cell issue, injector issue or pump issue? I'm not new to this just don't want to over think it. It seems to surge a bit more than miss but also runs rough at slower speeds, I can watch the tac bounce under 1000 rpm's.
|
|
|
|
| mikey h.
10-04-2012 17:33:11
67.142.177.26
|
|
Re: 670 Diesel miss in reply to Joe Pro, 10-03-2012 20:42:21
|
|
| you may very well have retainer ring problems in the pump with erratic governor action at idle speed, but do not over look the injector tips they open relativly low around 1850 p.s.i. with a solid core and atomization coning out from the tip for proper pre cup operation.
|
|
|
| Dieseltech
10-04-2012 06:49:18
75.146.127.110
|
|
Re: 670 Diesel miss in reply to Joe Pro, 10-03-2012 20:42:21
|
|
| You may have injection pump trouble, weight retainer ring may be breaking up inside causing erratic governor control. Just fixed an M-602 pump that had the same problem with surging. If not repaired and retainer pins break off it will take out the head assembly and break the drive shaft, a LOT more costly to fix.
|
|
|
| Heath72
10-04-2012 15:51:13
70.39.12.86
|
|
Re: 670 Diesel miss in reply to Dieseltech, 10-04-2012 06:49:18
|
|
| Had the same problem with a 4020 once. It fluttered alot between 1000 and 1200 RPM's, but ran fine at higher speed. They went through the pump, and the problem was the retainer ring went bad. It ran like a new one $600 later!
|
|
|
[Options]
[Printer Friendly]
[Return to Forum]
[Add a Reply]
| Same-Day Shipping! Most of our stocked parts ship the same day you order (M-F). Expedited shipping available, just call! Most prices for parts and manuals are below our competitors. Compare our super low shipping rates! We have the parts you need to repair your tractor. We are a Company you can trust and have generous return policies! Shop Online Today or call our friendly sales staff toll free (800) 853-2651. [ More Info ] |
Home
| Forums
Copyright © 1997-2013 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 |
About this site - Yesterday's Tractors is your one-stop source for antique tractors. If you are interested in older tractors you've come to the right place! Join more than 275,000 other classic tractor enthusiasts from all over the globe. We have many resources for antique tractor enthusiasts available including photos, classified ads, more than 24 tractor discussion forums, a show guide, values, specs and much more. Bookmark this site and come back often. Thanks for stopping by! Feel free to use our feedback form to send us your comments, suggestions and ideas.
|
|
|
