Duetz 2011

CalTreeEquip · Mar 15, 2014

Just want to relay a costly screw up.
Duetz 2011 not getting fuel to the #3 and #4 injectors. After talking to my mechanic we figured the pumps had failed, first mistake. These are Duetz pumps, not Bosch, and they can't be rebuilt. My rebuild guys could have told me that over the phone but didn't. Order new ones from Memo Parts in TX, they got it wrong the first time. Total of 3 weeks before I have the right parts, put them in, same symptoms. Get frustrated, call my mech, he works on it for 2 hours, swaps everything around, figures the pumps are fine, must be a fuel feed problem. This doesn't make sense to either of use but this is a rail system rather then a distributor system so if you are not getting enough fuel it won't make it to the back of the line. Now I changed the main fuel filter in the beginning and all was good so I didn't change the inline filter because it looked new. He pulled that little bastard off and it was a 1/4" filter rather then a 5/16". This is what was restricting the fuel flow from getting to the rear pumps. 1 month and $1000, now it runs fine and all it needed was a $5 filter and 5 minutes. This one hurt. Stupidity is our greatest enemy.

a_lopa · Mar 16, 2014

What was the symtoms to start with? rough starting and a bit smokey then clear up?

CalTreeEquip · Mar 16, 2014

No. Running ruff led me to test the heat at the exhaust manifold. No heat, no fire. I back tracked from there. Crack each injector line and listen for a change, then note the spray of the fuel coming out. In this case there was no change in the #3 and #4 lines and very little fuel under low pressure.
Less in 4 then 3 and they started off spraying ok but then diminished to nothing.

2treeornot2tree · Mar 16, 2014

I change those $5 in line filters quite frequently.

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Eq Broker · Mar 18, 2014

Cleaning your fuel cell can help keep the inline filters clean as well. You can buy a lot of dirty fuel as we have in the past. I was thinking it was a lift pump until I read the symptoms. Thanks for the info and I'll keep this in mind.

a_lopa · Mar 19, 2014

Ive just had a duetz with 300 hrs run rough at start up,turned out to be a valve in one of the injectors.

MOE · Mar 19, 2014

my carlton 8018 tier 3 2011 won't start below 40 degrees. I don't like the plunger/injector set up at all that deutz runs on these. I have an older one in an 873 bobcat that will start well at zero. The older one runs much smoother as well. I called deutz and they said all tier 3's will start hard and idle rougher becasue of the advanced pump timing required to make tier 3 standards with this engine. Not a lot you can do with the plunger set up they have, I'm going to look into shimming the plungers to see if I can retard fuel timing a bit that way.