2004 Ford Ranger - What do these symptoms mean?

ford
#1

2004, Ford ranger hesitate acceleration, black smoke from exhaust, rough idle.

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#2

Yet you don’t have your CEL on?
Black smoke means grossly over rich fuel mixture.
Blue smoke is oil.

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#3

It can be as simple as a dirty air filter. When is the last time you did a service update on the engine? Are the spark plugs original?

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#4

which engine?
How many miles?
Any repairs recently done?
Check Engine Light on?
Any repairs that haven’t been done that you know it needs?

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#5

Sounds like a misfire if you’re looking for a guess. I’d guess a bad coil on a Ford. This is only a wild guess for funsies. But, as others said, the check engine light should be on. If you get the codes read for free at a parts store, someone here might use the code to point you in the right direction.

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#6

My guess — truly a guess — is there’s unmetered air getting into the engine somehow. Check carefully the path from the air filter to the throttle body. Use a mirror or just disassemble it and look at it on the bench. Any splits in rubber boots, etc? Parts disconnected?

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#7

Hi,
The engine is 2.5 diesel

it has 200000 miles

the repairs i did was change airfilter, fuel filter and heater plugs

it is also difficult to do more 80miles/hr

The check engine light appears when i start but goes off after i start the car.

It other things as suggested by community i will talk to the mechanic to check

Regards,

Mmoloki

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#8

Are you in the United States? I wasn’t aware that any Ford Ranger had a diesel engine.

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#9

1983 -1986 rangers had diesel engines as an option.

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#10

Well, I’ve learned something today. Thank you. :slightly_smiling_face:

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#11

My guess was wrong!

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#12

That may be so . . . but op said his Ford Ranger is a 2004 model year

So I’m guessing he’s not in the USA

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#13

Yes, I am not in USA, i am in south africa.

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