No power in cylinders 4,5,6

[Buckeye5316]

I have a 2006 ram 2500 with a 5.9 cummins with an edge tuner. I've had a leaky injector for cylinder 3 for a while and finally decided to replace it. When we replaced it the new injector turned out to be worse somehow. It was a reman and in that cylinder it was completely dead whenever we would give it a little gas. At times there was even a knock from it hydrolocking the motor. We replaced it with another injector and now the truck won't even start. There is no power to cylinder 4,5, and 6 at the connector that plugs into the harness in the valve cover gasket.

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[Polaraco]

I have a 2006 ram 2500 with a 5.9 cummins with an edge tuner. I've had a leaky injector for cylinder 3 for a while and finally decided to replace it. When we replaced it the new injector turned out to be worse somehow. It was a reman and in that cylinder it was completely dead whenever we would give it a little gas. At times there was even a knock from it hydrolocking the motor. We replaced it with another injector and now the truck won't even start. There is no power to cylinder 4,5, and 6 at the connector that plugs into the harness in the valve cover gasket.

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If you didn't buy them from @AccurateDiesel, Shame on you.

My bet is you have a improperly seated cross tube, or you introduced a bunch of dirt to the system. Now you need to get cross tubes. When working on injectors, you must WORK EXTREMELY CLEAN!!!

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[dmuney]

I have a 2006 ram 2500 with a 5.9 cummins with an edge tuner. I've had a leaky injector for cylinder 3 for a while and finally decided to replace it. When we replaced it the new injector turned out to be worse somehow. It was a reman and in that cylinder it was completely dead whenever we would give it a little gas. At times there was even a knock from it hydrolocking the motor. We replaced it with another injector and now the truck won't even start. There is no power to cylinder 4,5, and 6 at the connector that plugs into the harness in the valve cover gasket.

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Did you find out what the electrical problem was with 4 5 6 injectors?

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[F350Cummins]

4,5 and 6 is likely wring harness 1,2,3 plug in at the front of the valve cover gasket, that is how the harness connects to the injectors, and 4,5,6 are the back plug

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[dmuney]

4,5 and 6 is likely wring harness 1,2,3 plug in at the front of the valve cover gasket, that is how the harness connects to the injectors, and 4,5,6 are the back plug

This motor has the 3 connector style

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[F350Cummins]

Let me look at my books, my 06 had 2 connector style, I am not sure I have ever seen a 3 connector style harness and VC gasket

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[Polaraco]

This motor has the 3 connector style

4,5 and 6 is likely wring harness 1,2,3 plug in at the front of the valve cover gasket, that is how the harness connects to the injectors, and 4,5,6 are the back plug

Did you find out what the electrical problem was with 4 5 6 injectors?

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Are you sure the cross over tubes are in correctly? You didn't get them full of dirt did you? If you did, you're done. New injectors.
It only takes one tube to be lose. If you have something like a CS2, you can watch the rail pressure while you spin the starter. Under 3K PSI and you have a fuel leak

I remember someone cross threaded the cross tube retainer nut in the head once. . . It was a bear to figure out. The tube wasn't seated. AHEM!

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[dmuney]

Image1.jpg

Are you sure the cross over tubes are in correctly? You didn't get them full of dirt did you? If you did, you're done. New injectors.
It only takes one tube to be lose. If you have something like a CS2, you can watch the rail pressure while you spin the starter. Under 3K PSI and you have a fuel leak

I remember someone cross threaded the cross tube retainer nut in the head once. . . It was a bear to figure out. The tube wasn't seated. AHEM!

This is on the customers truck came in barley running I did a comp test & leakdown 1 really low cylinder #3 Then scanned codes got a p0204 p0205 p0206. For Injector control circuit I'm assuming the trigger circuit coming from Ecm or is most likely a bad injector and they share this circuit?

Crossover tubes I followed cummins specs to the letter even took your advice on pressure washing the engine first I would've eaten off that motor it was so clean. I have a 90* pressure washing tip I used # 6 was easy cleaning

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[Polaraco]

This is on the customers truck came in barley running I did a comp test & leakdown 1 really low cylinder #3 Then scanned codes got a p0204 p0205 p0206. For Injector control circuit I'm assuming the trigger circuit coming from Ecm or is most likely a bad injector and they share this circuit?

Crossover tubes I followed cummins specs to the letter even took your advice on pressure washing the engine first I would've eaten off that motor it was so clean. I have a 90* pressure washing tip I used # 6 was easy cleaning

As far as I can remember, the drivers are not sequential. I'll have to read up on it. It could be the harness in the valve cover too. I recall there was an issue with chafing. Inspect the wires under the valve cover. Separate them and look to see if they were in contact with the moving hardware. Just for the hay of it, pull the plugs on the ECM and look for corrosion on the terminals. It's kind of odd you have 3 cylinders and 2 plugs. Take a look at the harness too.

Was this thing customer inflicted? And what year. 6.7 wiring is a bit different

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[dmuney]

It's an o5 3 plugs 2 injectors each customer said it happened all of a sudden. Haven't seen 3 injector conectors really plugs are in rocker cover not the VC gasket. That's odd my 05 and the customers 05 both have the 3 injector connectors that nobody has seen before Hum odd. I resistance tested each circuit under the valve cover and all are between .3 and .7 ohms I tried wiggles get the wires at the injectors no change and none are shorted to ground either


05 2500 4dr shortbed 4" lift on 35's, 4" straight pipe, Afe intake

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