AgTalk Home | ||
| ||
855 Cummins won't start Jump to page : 1 Now viewing page 1 [50 messages per page] | View previous thread :: View next thread |
Forums List -> Machinery Talk | Message format |
Don McDonald |
| ||
Plain City, Ohio | I have a 1978 St 251 Steiger with an 855 Cummins that does not want to start. I believe the problem is fuel related as it trys to start with a shot of ether but will just not go. The fuel filters were changed this spring due to loss of power after a few hours of operation and I suspected them to be the cause due to either water in the fuel or otherwise. I also bled the water off the bottom of the fuel tank and there did not seem to be a whole lot. At the time, changing the filters seemed to remedy the problem as far as power after a few hours of operation although the engine still did not start as easy as it used to(on a warm day it would fire right up as soon as you hit the key). My other suspicion is the electric fuel shut off on the injector pump as when we bought the tractor several years ago the dealer we bought it from had to work on it as it would not shut the engine down. Any thoughts on the situation would be appreciated. Thanks. | ||
Rod |
| ||
Check the ground connection on the shutoff. Our Peterbilt with Cat engine was hard starting, bad ground on the shutoff was limiting fuel to engine. | |||
hwdcne |
| ||
Soutwest Ks. | The solenoid on top of the injector pump should have a screw. If the screw is screwed out, screw it in or vice versa then try to start. This bypasses the solenoid and lets you know if solenoid or current to solenoid is suspect. To shut off engine, you will need to reverse what you did to the screw. | ||
Dennis |
| ||
See if you have 12 volts to the solenoid on top off pump. I had trouble this spring with my KW. Found out the key switch was bad. | |||
Larry NCKS |
| ||
Washington, Kansas & Lincoln, Nebraska | had a way to mechanically turn on the fuel as has been suggested via a screw. Been awhile for me too though. Don't know this particular situation. | ||
jakescia |
| ||
Oskaloosa, Iowa 52577 | that the engine was slightly out of time due to chip in timing gear teeth.................seemed we always had to use ether on that machine to start it........once it got going it ran like a jewel. Then it seemed to take a little more ether, a little more often..............but of course we were too "busy" to take it to a real mechanic. Finally...........it blew a bunch of white smoke, and clattered to a halt..............I happened to be driving it at the time, so I know exactly how it was being handled. $10,000 later we found out it started as just a simple, inexpensive timing gear problem..............that 855 runs like top now. In fact, if it weren't in such a light tractor----- 875 Versatile-----it would be used all the time since the guys believe the 9370 with the nice cab and big tires is much more doggy than that 875------and supposedly nearly the same engine/hp. | ||
Guest |
| ||
hwdnce is absolutely correct. Disregard the post that says otherwise. A bad solenoid can also cause a low power condition. That is a very good diagnostic tool. | |||
Tim Cooke |
| ||
Screw in is fuel on (engine runs). Screw out to kill engine. Had an IH cab over that loved to eat electic shut offs. Especially at night in the field with the storm coming in........................... Tim | |||
Redman |
| ||
SW Saskatchewan | Older 855 Cummins had a component in pump that would fail(not solenoid") and require replacement. Did several old versatiles. But symptoms of it were that it just would not start one day, no matter how well it ran yesterday-- never seemed to be connected with any other symptom. Easy and cheap fix at a diesel shop. | ||
Don McDonald |
| ||
Plain City, Ohio | Hey guys, First of all I would like to thank all of you for the advice it sure helps when a guy is puzzled as to what to do. As it turns out, my 855 is stamped 1979 as opposed to '78 as I stated earlier,don't know if it makes a difference or not. At any rate the thumbwheel when turned in did allow the engine to start and then when turned back out did shut the engine down. I did have 11.93 volts when grounding the wire to the solenoid to the tractor frame. This leads me to believe that I either have a bad ground or solenoid. I will check ground this evening as I did not think to check it last night if it checks out then the solenoid valve will be replaced. Once again thanks for the advice and if any one else has any thoughts I would find them interesting. Don McDonald | ||
plowboy |
| ||
Brazilton KS | Rich, you're backwards on this. The solenoid holds the fuel on when energized and if it fails it will not run. Screwing the thumbscrew in will make it start, but you have to screw it back out to kill it when running on the thumbscrew.....or just stall the engine with the clutch....not that any good driver would do that. Been there done that on our Versatile once and on our spreader truck due to mice in the wiring....ran the spreader truck that way for some time so I'm pretty sure of what I have said. | ||
Jump to page : 1 Now viewing page 1 [50 messages per page] |
Search this forum Printer friendly version E-mail a link to this thread |
(Delete cookies) | |