OEM vs aftermarket fuel injectors on a Kubota MX5000

[matt498]

Hi, I'm new to this forum. I have an MX5000 we purchased about 15 years ago. She needs new fuel injectors and maybe a fuel pump?? Part# on the injectors should be 16454-53905.

Ive priced the parts and OEM Kubota brand is between 5 and 10 times more expensive than after market.

Does anyone have a preferred after market brand they've had good experience with or even a link to injectors they already purchased.

I know we get what we pay for but there has to be a line somewhere when OEM is going to run me between 750 and 1100 depending on distributor and after market is under 100 for 4 injectors all over the web.

Thanks in advance, Matt498

 

[Russell King]

Why do you think they need to be replaced or repaired?

I have never heard anything good about the cheaper internet injectors. @North Idaho Wolfman always recommends to get them from dealer or rebuilt from Oregon Fuel injection. That seems to have been mechanical injectors not the newer high pressure common rail injectors that you may (or may not?) have.

I would contact Oregon Fuel about exchanging yours with their rebuilt ones. Or possibly just buy one new one and send yours off for rebuilding one at a time so you can hopefully keep using your tractor.

Home

Your trusted source for diesel parts & services since 1974. Shop online for injection pumps, injectors, turbos, or visit our Eugene, OR shop for expert repairs & upgrades.

oregonfuelinjection.com

 

[North Idaho Wolfman]

I'll Parallel what @Russell King asked, why do you think you need injectors or injection pump?

And yes aftermarket injectors and pumps are almost all junk.

Pull them and send them to Oregon fuel Injection to get them professionally rebuilt.

FYI: If you do pull the fuel injection pump, make 1000% sure you keep all the shims ( there is no set amount) off the bottom of the pump or block and keep them as you will need them reinstalled when the pump comes back from being rebuilt.

 

[matt498]

Why do you think they need to be replaced or repaired?

I have never heard anything good about the cheaper internet injectors. @North Idaho Wolfman always recommends to get them from dealer or rebuilt from Oregon Fuel injection. That seems to have been mechanical injectors not the newer high pressure common rail injectors that you may (or may not?) have.

I would contact Oregon Fuel about exchanging yours with their rebuilt ones. Or possibly just buy one new one and send yours off for rebuilding one at a time so you can hopefully keep using your tractor.

Home

Your trusted source for diesel parts & services since 1974. Shop online for injection pumps, injectors, turbos, or visit our Eugene, OR shop for expert repairs & upgrades.

oregonfuelinjection.com

I'm getting serious knocking when ever I give her fuel and the rpm's increase any amount. Loss of power. It was only happening after warm up but now it's pretty much the whole time she's running. Idles fine but any rpm increase and she knocks. We had some bad fuel also. All that's been drained and new fuel added with no change in the knocking. I had a diesel mechanic friend check out the knocking and he felt it was injector or pump but leaned toward injector since the knocking seemed like it was mostly from the rear cylinder.

Thanks for the Oregon injector suggestion !

Matt498

 

[North Idaho Wolfman]

Knocking is very very unlikely to be injector it's more likely a bearing.
It will not be the injection pump.
Any smoke?
An over fueling injector will cause it to smoke black.
Simple test with it running, crack the line feeding the injectors, what happens.
Do it for all cylinders.
A compression test would be the best thing to do next.
I can tell you how to tests the injectors yourself based on the answers to the above.

 

[jimh406]

I would look into how to rebuild/clean the current injectors. Just running some Sea Foam through the fuel system and in the oil might make it quite a bit better.

I don't think there is much of a market for aftermarket injectors. I think it would be hard to figure out which ones to buy and stay compatible.