Team, Seeking advice on an injector pump for a Kubota D722-EB diesel engine. Engine has 2,200 hours on it. Was smoking horribly when I traded into it/for it. I am hoping it is injectors or pump. Having injectors rebuilt. The pump comes with a bigger price tag for rebuild: $400-$650 depending on what it looks like once they are into it. Or, I can buy a brand new pump for $600. Any insight as to what the pump would be like to try and rebuild at home? Do-able or Nightmare? I'd rate myself an 8 on a 1-10 scale as a mechanic (maybe a 9 with enough Anheuser-Busch products in me). I'm the World's Best at takin' apart. It's the puttin' back together that I f up on quite a bit. As always - huge thanks for any information shared.
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SkidRoe
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My $0.02 - I too have never been one to shy away from a project, but I have yet to take on an injection pump. A possible way of gauging your dilemma would be to get a hold of a manual for your injection pump, if you do not already have one. From there, you should be able to decide what the best financial decision is (including special tools, parts, measurement equipment, setup procedures, etc.). The good news is you already know what the high end cost is. HTH
Skid, Thank you. Good insight. Two questions for you: 1. Any idea where one would get a manual for an injection pump? 2. Do I need to worry about the timing at all? Injection pump (pistons inside?) is driven by a separate cam whose lobes - when turning - tickle the bottom of the pump. Do I need to mark position of anything? I haven't moved anything on motor yet.
Honestly, don't even bother unless you are prepared to spend countless hours tweaking it.
Start with the injectors, they are the most common cause of black smoke due to them not spraying right and the fuel will not fully burn.
The problem is, you need special tools to calibrate the fuel flow. The innards are simple enough, but you need to know exactly where to line the first one up, then you need to match all the others to this one so they all put out the exact same amount if fuel. Yes, it could be done, but you will spend a long time fiddling. If you need parts, you will no doubt have to pay big money as they are not available from the dealer, you need to talk to an injector shop for them.
I never go further in than the O rings on the delivery nozzles. The rest is the injector shops domain.
Tazza, Your guidance is always solid. Thank you.
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