Woes replacing diesel heater with Chinese one

[TobyQuest]

Hello,

My new diesel heater has E8 error and fuel is not getting pumped into it even though the pump is clicking and attempting to....can anyone help:

Backstory:

As my old Mikuni MY16 diesel heater had an issue it was cheaper to replace it than fix it.
I bought a 5kw Vevor chinese one and want to run it from my main diesel fuel tank. Also I saw people saying this rubbery green hose they supply you with is not very good and its better to use the hard nylon hose that has a smaller bore hole because the fuel pump finds it easier to push the fuel through.

So I thought i would be clever and simply take the higher quality nylon hose off my old heater and plug it onto the new one. The metal ends of the fuel pump were larger on my new heater so i ran a length of green hose over that and the nylon one. I have many areas of air inside the hose which I can see, but the pump is clicking but still not pumping the fuel through, lik its too weak, or maybe theres a blockage, but im just making guesses.
To what extent are these chinese heaters gravity-fed? The current set up ive installed takes the diesel by splicing from the main fuel line which runs on the top of the fuel tank, so I dont have a line that goes down inside the tank so to speak. It worked fine on the old diesel heater. Thats how they installed it.

How to remove the air bubbles?

 

[activecampers]

I don't think i want to mess with the settings. Sounds like a headache waiting to happen. But i am kind of getting buyers remorse that i installed a 5 kw when a 2kw was probably more than sufficient.

I just saw a video where someone recommended to get a bigger one and so i did

Yep, but a lot of 2kw ones sold are 5kw so keep an eye on unit size - thats the only tell.
I've a L2H2 and have 5kw - total over kill, generally always on lowest settings..... A 2kw running on a higher level would have been fine.

(Most parts are interchangable, so just keep an eye on ebay deals!(

It was spec'd for alpine winter use.... but even so....!!!

 

[gus-lopez]

A) on when driving

I have done & many do & most truck ones also:

B) on the low H1 setting for long periods.

Mines supposedly 2kw but is actually 5. I have to run overnight when in the UK on low all the time. Or turn it off when it is too hot.

 

[TobyQuest]

Because i drove it once with the heater on and got this message

 

[jollyrodger]

I wonder
How is your fuel supply tied to your main tank?
T piece off main line?

I use a separate tank, often drive with it on.

Have slowed pump speed Down

Reduced temp to mid range 26°

Performs well and no problems whilst in motion. And use the key fob remote if I need to alter temp or on /off from front cab.

Never had probs using cherry or heating oil in the one at home.

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[activecampers]

I wonder
How is your fuel supply tied to your main tank?
T piece off main line?

I use a separate tank, often drive with it on.

Have slowed pump speed Down

Reduced temp to mid range 26°

Performs well and no problems whilst in motion. And use the key fob remote if I need to alter temp or on /off from front cab.

Never had probs using cherry or heating oil in the one at home.

Never T off main line, the tank can contain a fuel pump, and on the later engines you really don't want to interfere with the fuel system! Dedicated pick up if in tank

 

[activecampers]

Because i drove it once with the heater on and got this message

Likely to be a glitch or wiring fault or controller sensitive to vibrations to fake button presses - OC5 is a programming mode for a remote. Nothing to do with the heater being on when driving

Info:-

Firstly, in shutdown state,simultaneous long press "ON/OFF Key" and" Right Key " on the LCD screen for 2 seconds , Then enter pairing mode : [ 0C 1 ]

1）Press " Left Key " or " Right Key " to adjust the third digit value for remote coding, Code number range OC1-OC5 , corresponding 5 remote controls.
2）Choose any Code on the LCD for Remote，Then press any key of the remote controller, Then remote control will be paired successfully

 

[TobyQuest]

Yes mine is T'd off from the main fuel line.
The OC5 reading could well have been from fake button presses. As I have not installed the diesel heater control panel in the right place yet, it was wedged between a couple of things when i was driving so maybe the bumps in the road etc caused some buttons to get pressed.

 

[activecampers]

Yes mine is T'd off from the main fuel line.
The OC5 reading could well have been from fake button presses. As I have not installed the diesel heater control panel in the right place yet, it was wedged between a couple of things when i was driving so maybe the bumps in the road etc caused some buttons to get pressed.

Cool, sounds like it. On an "old" nissan t'ing may well be OK - the high pressure common rail diesels, I'd not recommend at all.

(Love the idea of going back to simple and robust diesel engines!!)

 

[Bertilak]

Yes mine is T'd off from the main fuel line.
The OC5 reading could well have been from fake button presses. As I have not installed the diesel heater control panel in the right place yet, it was wedged between a couple of things when i was driving so maybe the bumps in the road etc caused some buttons to get pressed.

I've met people who have successfully tee'd off the return line... which should have no pressure in it with the engine running, but also allows sucking back up from the tank when parked.