Injector cleaning vs replacement
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Injector cleaning vs replacement
I have a 1994 7.3L Turbo diesel with 180K miles. It's blowing a lot of white smoke when cold and has a loss of power.
Two mechanics told me it's fuel injector / injector pump problem. I spoke to a shop about replacing the pump and cleaning the injectors and he said that with those miles the injectors are worn and should be replaced, cleaning may be a waste of time.
Is this true?
Is the loss in power and white smoke possibly something else? should I get a compression check?
Two mechanics told me it's fuel injector / injector pump problem. I spoke to a shop about replacing the pump and cleaning the injectors and he said that with those miles the injectors are worn and should be replaced, cleaning may be a waste of time.
Is this true?
Is the loss in power and white smoke possibly something else? should I get a compression check?
Post Fiend
Joined: Nov 2003
Posts: 21,285
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From: Nutter Fort, WV
Is the white smoke only when cold? If it is, it is unburnt diesel fuel being exhausted. Remember the only sorce of ignition is the air temp rise when compressing the air in the cylinder. When the motor is cold there is not enough heat for complete combustion.
Does the motor have normal power when it is warm? Does the white smoke stop completely when it is warm? Do you have an IDI or Powerstroke?
Does the motor have normal power when it is warm? Does the white smoke stop completely when it is warm? Do you have an IDI or Powerstroke?
More Turbo
Joined: Nov 2000
Posts: 715
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From: Erie, PA
With those high of miles, I would say go for a new set of injectors and a new pump. Trust me, it will run like new. YOU WILL BE HAPPY.
The problem I ran into was when I replaced my pump and left the old injectors in there. It did not run real well when cold and seemed to smoke white. The rattle was dull and quite. A new set of injectors sharpened the knock and improved every aspect of the engine.
The problem I ran into was when I replaced my pump and left the old injectors in there. It did not run real well when cold and seemed to smoke white. The rattle was dull and quite. A new set of injectors sharpened the knock and improved every aspect of the engine.
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There is massive white smoke (smokes up the neighborhood) for the first 3 minutes of running then it clears completely. Also when it's cold it feels like it's not hitting completely on one cylinder but that goes away when warm.
It's low on power when warm as well and when pulling my 25' fifth wheel camper it overheats on hills. One mechanic said that the fuel problem could cause that.
Thanks for the help/
It's low on power when warm as well and when pulling my 25' fifth wheel camper it overheats on hills. One mechanic said that the fuel problem could cause that.
Thanks for the help/
More Turbo
Joined: Nov 2000
Posts: 715
Likes: 11
From: Erie, PA
Kidoo,
No the knock does not "come" from the injectors. The knock you here is the sound of the diesel combustion taking place. The injectors have alot to do with how that combustion is effected.
Brimhall,
I would pull out all your injectors and take them to a local shop and they should be able to test them for a small fee if not for free. Replace any that are bad or just buy a new set if most are bad. Then go from there. You may actually be in need for a new pump.
No the knock does not "come" from the injectors. The knock you here is the sound of the diesel combustion taking place. The injectors have alot to do with how that combustion is effected.
Brimhall,
I would pull out all your injectors and take them to a local shop and they should be able to test them for a small fee if not for free. Replace any that are bad or just buy a new set if most are bad. Then go from there. You may actually be in need for a new pump.
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