Won’t start after changing fuel filters

Topic: Won’t start after changing fuel filters (Read 3242 times) previous topic - next topic

Re: Won’t start after changing fuel filters

Reply #25 – November 12, 2023, 04:04:07 pm

Quote from: dbennett9 – November 12, 2023, 03:25:03 pm

Do you have any idea where the ECM might be? I have looked everywhere I can think of but haven't found it.

Possibly similar to that for an ISM - note the discussion of a couple of corroded fuse holders causing an engine to die..

Quote from: Rudy – June 05, 2018, 10:32:30 pm

No pics. But easy to see the location by opening bed, finding ECU on passenger side of engine, locating the top ECU harness connector close to the engine and following the wire bundle to this connector. Mine is wire tied together with the inline fuse holders hard to see in the bundle. They are very near the rear of the engine above where the trans is bolted on behind the ECU.

Engine Dying While Running

Re: Won’t start after changing fuel filters

Reply #26 – November 12, 2023, 05:48:33 pm

It should be mounted to the engine block on the "cold side" of the engine. Opposite side of the turbo.

The post that Michelle linked sounds dead on for your issue.

Re: Won’t start after changing fuel filters

Reply #27 – November 12, 2023, 06:29:15 pm

I also had to change out my fuse holders they were badly corroded. I found that after my engine
wouldn't start.

Re: Won’t start after changing fuel filters

Reply #28 – November 12, 2023, 07:19:35 pm

I believe I have located the ECM, but it is very difficult to get to. I have some fuses mounted on the inside of the bed, where the battery isolator is mounted, that I think are the fuses for the ECM. They are the same type of automotive fuse holders except they are screwed to a panel. They appear to be the fuses in the engine wiring drawing that go to a multi pin connector for the ECM. The fuses are all good.

Re: Won’t start after changing fuel filters

Reply #29 – November 16, 2023, 01:53:52 pm

I still cannot get the coach to start. The two codes in the attached photo are the only codes I am getting. The first one is active and the second inactive. The symptoms from when the coach first shut off make me lean toward the problem being related to the fuel system, but Cummins tech support suggests I should have the ECM tested based on the active 111 code. I have two questions:
1. Has anyone had any experience with a similar issue involving these fault codes?
2. Since the 277 code indicates a possible issue with the injector control valve, does anyone have any experience working on the injector control valve? I am hesitant to tear into it without knowing what I am getting into. I do have the Cummins repair procedure.

Re: Won’t start after changing fuel filters

Reply #30 – November 16, 2023, 07:49:58 pm

Dave any way to check the fuel pressure, like teeing off the secondary filter and adding a gauge, seems that if you have fuel at the injectors she should make smoke

Re: Won’t start after changing fuel filters

Reply #31 – November 16, 2023, 10:39:50 pm

Quote from: fatheeler – November 16, 2023, 07:49:58 pm

Dave any way to check the fuel pressure, like teeing off the secondary filter and adding a gauge, seems that if you have fuel at the injectors she should make smoke

Yes, it seems like it should run. The injector control valve, as I understand it, controls the amount and timing of the fuel to the injectors. I know the fuel is getting there, but there could be an issue with how much or the timing of the delivery. I can't get a mobile technician who I have any confidence in to come out, so I am considering having it towed to a Cummins service center.

Re: Won’t start after changing fuel filters

Reply #32 – November 17, 2023, 02:16:39 pm

How about disconnecting the battery for a reset,

Re: Won’t start after changing fuel filters

Reply #33 – November 17, 2023, 09:17:26 pm

Quote from: fatheeler – November 17, 2023, 02:16:39 pm

How about disconnecting the battery for a reset,

I did try that. I disconnected both the start batteries and the house batteries, made sure the charger was off, disconnected the coach from shore power, and disconnected the solar panels to be sure there was no way the ECM could be getting power. I left everything off for about twenty minutes, but there was no change.

Re: Won’t start after changing fuel filters

Reply #34 – November 17, 2023, 09:53:32 pm

Likely down to the point you need to get a Cummins person the bring his scan tools. Sounds like an ecm not firing the injectors. Make sure they have Cummins diagnostic tools not generic, they should be able to find the issue rather quickly.

Re: Won’t start after changing fuel filters

Reply #35 – November 19, 2023, 12:14:13 am

I have it scheduled to be towed to Cummins in Austin, but because of the holiday they can't get to it until the 27th.

Re: Won’t start after changing fuel filters

Reply #36 – November 27, 2023, 04:24:07 pm

I haven't been able to get the coach towed, but I did have a mechanic take a look. He is not really familiar with this engine, but he confirmed that it appears to be getting fuel to the injectors. He advised me to try some starting fluid to see if it would try to start. I hadn't tried starting fluid because I had heard that it is not advised on diesels. I tried it and the engine did try to start. I am also now getting white smoke but before I didn't get any. I don't know whether I should try the starting fluid more. Also, what does the white smoke indicate?

Re: Won’t start after changing fuel filters

Reply #37 – November 27, 2023, 04:26:02 pm

Dave,
Ether/starting fluid is NOT recommended for any diesel engine with an intake manifold heater.

Ether (explosive) and red hot heater grid............

Re: Won’t start after changing fuel filters

Reply #38 – November 27, 2023, 04:37:31 pm

White smoke indicates un burned fuel.

Re: Won’t start after changing fuel filters

Reply #39 – November 27, 2023, 08:52:02 pm

You can substitute WD40 or better yet some of the silicone lube sprays for starting fluid. They say that starting fluid tends to dry out the cylinder walls. You may want to bleed all your injector lines of any air, starting with the one farthest away from the fuel pump. Also make sure there is no air in the filters, even a small bubble it won't start, I've been there done that.

Re: Won’t start after changing fuel filters

Reply #40 – November 27, 2023, 08:57:15 pm

Quote from: Mobius – November 27, 2023, 08:52:02 pm

You can substitute WD40 or better yet some of the silicone lube sprays for starting fluid. They say that starting fluid tends to dry out the cylinder walls. You may want to bleed all your injector lines of any air, starting with the one farthest away from the fuel pump. Also make sure there is no air in the filters, even a small bubble it won't start, I've been there done that.

I did try the WD-40, but it didn't work at all. The starting fluid I used is supposed to be for diesel and gas engines and contains a cylinder lubricant. I do think it is a fuel issue of some kind, but I am supposed to get it towed tomorrow (if Progressive follows through--a whole different story). If the tow comes, I think I will let the experts figure it out.

Re: Won’t start after changing fuel filters

Reply #41 – November 28, 2023, 03:22:11 am

Read thru all the posts again,what shape is your air filter in,something you could check while waiting and have you tried starting
while running the block heater to warm the engine.It will turn over faster with warmer oil.Those dark particles might be algae/bacteria,I would get some Diesel kleen and some bacteria
additive and put the maximum amount in,boost the cetane and that will help it start.

Re: Won’t start after changing fuel filters

Reply #42 – November 30, 2023, 06:34:25 pm

I finally got the coach to Cummins in Austin on Tuesday. They diagnosed it on Wednesday and the verdict is the fuel pump died. So they are ordering a fuel pump. You don't even want to know what it will cost.

Re: Won’t start after changing fuel filters

Reply #43 – November 30, 2023, 06:46:42 pm

Assuming this is a CAPS fuel system (depends on when engine was manufactured):

Fuel pump or CAPS pump? One is $$, the other $$$$$$$.

If fuel pump, a known issue, particularly for leaks (fuel out and AIR IN). Not a big job to replace.

Re: Won’t start after changing fuel filters

Reply #44 – November 30, 2023, 08:30:30 pm

This is the $$$$$$$.

Re: Won’t start after changing fuel filters

Reply #45 – November 30, 2023, 08:53:19 pm

Quote from: dbennett9 – November 30, 2023, 08:30:30 pm

This is the $$$$$$$.

Is that for the ISL?

Re: Won’t start after changing fuel filters

Reply #46 – November 30, 2023, 09:03:37 pm

The Isl Should be a high pressure common rail fuel system? I wonder if it's the HIGH pressure fuel pump or the control module for the electric fuel injectors?

Re: Won’t start after changing fuel filters

Reply #47 – December 01, 2023, 08:35:16 am

Quote from: bbeane – November 30, 2023, 09:03:37 pm

The Isl Should be a high pressure common rail fuel system? I wonder if it's the HIGH pressure fuel pump or the control module for the electric fuel injectors?

Depends on the engine production date. Could be one of the last CAPS system engines or could indeed be the high pressure common rail fuel system.

A quick call to Cummins Corp with your engine serial number will give you the answer.

Cummins 800-286-6467

Re: Won’t start after changing fuel filters

Reply #48 – December 01, 2023, 12:25:00 pm

This is an ISL. The pump is the CAPS pump.

Re: Won’t start after changing fuel filters

Reply #49 – December 01, 2023, 12:33:42 pm

Quote from: dbennett9 – December 01, 2023, 12:25:00 pm

This is an ISL. The pump is the CAPS pump.

Understand.

But, the different answers are based on the fact that your engine is at the very very end of CAPS engines. And, depending on when Foretravel built your coach, could be CAPS or the high pressure common rail fuel system that started in 2004.

So, we could not know which system you have without your engine serial number.

All is good......

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