Injector replacement b7200d

[newtoorange1001001]

Hello,

Gonna be a longer post, new to kubotas, not so new to diesels (newer ones), currently bought a house with a kubota b7200d, was in some rough shape, changed out the odds and ends first (starter, tires) battery is new too, it developed a fuel knock, changed out all 3 injectors. Inspected the old ones found had small crack, scopped the piston and found nothing wrong, issue now is wont start, cranks, can hear compression when it turns over, I cracked the fuel lines at the injectors first to make sure im getting air out of the lines and getting fuel, retightened lines and no starting, am i missing something inbetween?

 

[North Idaho Wolfman]

It takes longer than most suspect to get all the air out.
And air trapped in the injectors themselves can amplify the issue.

Where did you get your injectors from?
If it was eBay or Amazon they are very likely worse than what you had.
They are notorious for being bad from the start.

I only buy injectors from Oregon Fuel Injection.

 

[newtoorange1001001]

It takes longer than most suspect to get all the air out.
And air trapped in the injectors themselves can amplify the issue.

Where did you get your injectors from?
If it was eBay or Amazon they are very likely worse than what you had.
They are notorious for being bad from the start.

I only buy injectors from Oregon Fuel Injection.

Thank you for the info, i will try that, i ended up getting mine through Fridayparts

 

[D2Cat]

Just what North Idaho Wolfman said. I know several times I felt just like you expressed, what next.... I bled all the air. Eventually you figure out it just takes more time turning that engine over to expel the air then you can imagine! Only crank the engine in short spurts of 15-20 seconds, then give your starter a rest. You don't want to over heat it, or you get a new set of problems. Hey, welcome to the forum.

 

[Russell King]

One other suggestion is to only change one at a time. Then the engine will probably start after you sort of bleed that line and you can then bleed the line on the new injector completely with the engine running at idle. Just use caution around the running machine.

 

[North Idaho Wolfman]

Thank you for the info, i will try that, i ended up getting mine through Fridayparts

Yea, sorry your odds of getting good injectors did not improve.