Injectors?

Woodwalker · Jun 18, 2013

I"ve got a JD 5410 three cylinder that has lost power. I"m 98% sure it"s a fuel problem.I"m experiencing no power, low RPM"s, black exhaust smoke with a "miss" and have changed the fuel filter, air filters and serviced the tractor. I"m thinking an injector, but I"m sure not a diesel mechanic.
Anybody got any pointers or something I can check short of taking the thing to a shop?
Thanks for the help.
Wade

Roger in Iowa · Jun 18, 2013

Black exhaust says too much fuel or unburnt fuel because of lack of air. Check your air system. Something may be plugging it up. Bird nest, wasp nest, or something else??

Wheat Farmer · Jun 18, 2013

Have you checked the inside of the muffler. I know Crazy but happened to me.

Anonymous-0 · Jun 18, 2013

unless you know this tractor has water trashy fuel run thru it ,,don't yank injectors yet ,, 1st chek how it runs when the air filter is removed ,,fuel and air + compression ,, it ought to run ...one at a time loosen open the fuel injector line connection as close to the injectors as possible ,,the engine should expel air while runnin

Dave in Tx · Jun 18, 2013

Some of them have a temp sending unit that retards timing when cold. You can jump the wires on them and will instantly run properly. Talk to your dealer, part is less than $30 bucks. Has to do with emissions, not temp.

JD Seller · Jun 19, 2013

I will second that the black exhaust sounds like and intake restriction. Also all the JD 5000 series tractor have had troubles with the rubber fuel line from the tank to the filter. Check yours out. My JD 5210 had the line go bad and it filled the filter/transfer pump up with little pieces of rubber. It ran like crap until I replaced the fuel line and cleaned everything out.

Billy Shafer · Jun 19, 2013

Sounds like air intake problem.Or injector putting out to much fuel.

You can open the fuel line at the injector. If the smoke clears. You have found your bad injector. You don't have to remove the line. Just back off on it until you hear a change in the engine.

You didn't stuff a rag in the intake while changing the air filter did you. Forget to remove it. Had a customer do that one time.

RodinNS · Jun 19, 2013

Black smoke is usually lack of air or too much fuel... usually. Not always.
To be on the safe side I'd pull the air intake apart just ahead of the manifold or turbo intake if that engine has a turbo. See what happens then. If it doesn't improve... I think I'd go back to basics and make sure that the fuel tank outlet isn't restricted, it has good flow to the filter... install another new filter, etc. Blocked tank strainers sometimes do very strange things...

Rod

cshess · Jun 19, 2013

Caution !If you open injection line do not have fingers near where fuel will squirt as pressure could inject fuel in finger an you will have blood poison.

David G · Jun 19, 2013

It is probably either one injector really bad or plugged intake.

Woodwalker · Jun 21, 2013

Thanks for the replies guys. Going to go crack the lines open and see what happens.

buickanddeere · Jun 21, 2013

It"s an airflow restriction somewhere between the inlet snorkel and the tip of the muffler.
Don"t be dorking around with the injection system as the first path of investigation.

Injectors?

Woodwalker

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Roger in Iowa

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Wheat Farmer

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Anonymous-0

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Dave in Tx

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JD Seller

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Billy Shafer

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RodinNS

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cshess

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David G

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Woodwalker

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buickanddeere

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