El Diebalo pump pulsating and chemical feed does not work

BigPapa

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Apr 11, 2013
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Dan Ziegler
I hope you find your answer Travis, I have a HE bought in 2016, and she is one sweet lady, She dials in to what ever I need...Yes..I am new to the new truck mounts, but Dam...As I run her out...and I was 30 years younger...She would still make me sweat...LOL

I don't even run the heat unless I feel I need it, but when I do...She delivers.
 

Anderson

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Aug 16, 2006
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MARCUS ANDERSON
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the difference in the Diablo HX and their deisel heater TM.......

is they have a different chemical injection........for the cat pump.....

The HX has a down stream(last step) chemical injection with a separate chemical pump.......

the deisel heat version has a upstream(before the pump) chemical injection.....
 

Travis Teague

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Oct 5, 2016
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Travis Teague
Update on the pump issue. I pulled the check valves on the pump itself and 2 of the 6 had dirt in them. Cleaned them out and no more pulsating. Thank you Jason for that idea.
As for the chemical feed I tried to prime it and still not working. I will fool with it some more tomorrow. Pull both lines off again and check for cracks and leaks as well as the chemical meter. I did notice there is water in the meter now just cant get any flow or bubbles going in it.
 
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Mar 30, 2010
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jason fisher
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Update on the pump issue. I pulled the check valves on the pump itself and 2 of the 6 had dirt in them. Cleaned them out and no more pulsating. Thank you Jason for that idea.
As for the chemical feed I tried to prime it and still not working. I will fool with it some more tomorrow. Pull both lines off again and check for cracks and leaks as well as the chemical meter. I did notice there is water in the meter now just cant get any flow or bubbles going in it.
Glad to see you got that fixed
 

The Magician

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Dec 2, 2008
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Jimmy Nardella
Take the black knob off the chemical meter and take out the insert . I believe it pulls or screws out. Blow in the hole see if if the bullet moves. It could be stuck. You may need a new insert or rebuild or just cleaned out. There may be a rubber gasket inside that's shot. If that doesn't work u may need a new chemical meter