my 160clc is skipping still all the injectors seem to be functioning welll i just replaced the burnt piston in it theres no fuel leaks the injector pump isnt that old.is there a way that the ecu would make it skip it seems to be doing what it did before it burnt the piston ive adjusted valves ive racked my brain on this for two weeks is there any type of sensor that would make it skip?it idles perfect sounds completely normal then when i give it fuel it starts skipping.isnt blowing any smoke.im baffled HELP really need this machine running so i can get this big job done!!! any help appreciated!!
Could be inj. pump timing? Stanadyne DB2 or DB4?? Try rotating the pump slightly, one way or the other..
Me thinks your trouble shooting is lacking. The injectors seem to be functioning well ???? How do you know that ? Did you send them out to get checked ? What burnt the piston ? Dripping fuel from an injector that seems to be functioning well is ceertainly a cause. No fuel leaks at the injector pump also isn`t a real test of it. You need to start with the basics steps to find your problem.
Leaking fuel injectors will often idle fine and cause a missfire off of idle, either send them out to have them tested or identify weak cyl and then move injectors to verify.
you have two choices here....keep throwing parts at it or have a reputable Deere tech hook up to it with his laptop and check for codes/observe injection pump operation. you probably need a pump,but you definetly need to have it properly diagnosed first.
That should be a DE10 pump and Greg is right. Assuming a part is good doesn't make it good. I'd have all the injectors tested since 1 already failed. Did you do a compression test after you put it back together? How did the valves look on the Cyl with the burnt piston? The electronics on those engines are pretty simple and won't throw many codes. It's usually a mechanical issue. If the injectors and compression check ok, I'd suspect a pump issue.
how do i find the the dead cylinder?we bought two new injectors to replace the one that was on bad piston and another suspect could others mess up because we took them out?how do i figure it out without takeing the injectors to a shop cuz there is no shop nearby.
You can use and infrared temp gun and read the temp on each exhaust port within the 1st few minutes of a cold start. I'm not sure on your logic of only buying 2 injectors. They aren't all that expensive, if I had 1 fail and was removing all 4 anyway I'd replace them all. A whole lot cheaper than doing another piston.
Yair . . . s&sexcavating . You can get real good advise here from blokes who really know what they are on about . . . but you have to tell the whole story. From your first post we assume a bad injector caused a burnt piston . . . how did you come to that conclusion . . . why was a second injector "suspect" and not the other two . . . how old the injection pump is has bugger all to do with anything. There is a lot going on here and if you don't know how to find the dead/faulty cylinder you really shouldn't be messing with that engine. To find it you need have the engine running and crack the fuel lines at the pump or injector . . . you will hear the ones that are good. All the best with it. Cheers.
okay i did that yesterday.i replaced the bad one and now its acting like the one next too it is bad now?and it only skips when at high rpm at idle it runs ompletely perfect... while im working it it seems to subside aswell.im in the middle of this job and i know itd be a pretty big process to see if take inj. pump off and haul it an hour and a half away to get checked i dont wana take off unless i know for a fact its the cause.is there anyway to tell by cracking lines on pump or simple way?could there be any other cause?this machine has me stumped if.i have i one oldish injector left and before i replaced the last it did the same thing as the others?since all the others are new would it make that one go bad too?ive spent so much money into this machine in the last month .....im young i know a little but not alot still learning.i checked all fuel lines for restrictions if there was any i cleaned them out. ive replaced filters.im stumped.its doing the same thing it was before i put the new piston,rings,and bearings.i dont wana have to go through that again!anymore help appreciated.
just trying to get by right now!wanted to replace them all just didnt seem possible for all of the injectors that were previously in it to just go bad all of a sudden....but like i said i dont know a whole lot!PLEASE feel free to feel me in..
also doesnt blow any smoke while it missfires!
.....
In the case of spark plugs or injectors, you could do a lot worse than throwing parts at it. You diagnose an injector just like a dead cylinder on a gas engine, instead of pulling the spark plug wire, you loosen the fuel injector line till the diesel squirts out, that cylinder is now pumping air with no fire, so you might be able to narrow it down to the cylinder/injector that is causing the "skipping". It would be easier if it was a misfire, then the noise wouldn't change when you killed the bad cylinder, and it would when you killed one of 3 good cylinders. You can then switch injectors around and see if the cylinder or injector is the problem, but at that point you could do a compression test and put in a new injector instead.
Alot of injectors get damaged removing from them getting stuck in the head, injectors aren't much more than a hours labor each. Cracking injector lines is a good start point. As stated above, then you need to know what to do with the information. If you put piston and rings in than you must have painted it to witch = rebuilt engine, 1 1/2 hour drive as to rebuilding engine again is a no brainer, take the help being offered to you. Why was first piston burnt. How many hours, any service history? Plz let us help you.