The mechanic who has my truck said he sees oil in my fuel tank and wants to pull the head but I just got it back from peterbilt and they said my motor is within spec minus injector cups.
motor is a 98 1lw 3406e
do you have to remove the head to replace the injector cup?
3406e oil in fuel tank
Discussion in 'Ask An Owner Operator' started by W9in’, Jun 5, 2021.
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Never heard oil in fuel seeing fuel is an oil.
no, you don’t pull the head.
here, this is the best video how to change the injector cups on a 3406.
sorry it is in Spanish.
W9in’ Thanks this. -
Not on that CAT. Did the fuel analysis come back as oil, or combustion chamber gasses?
Combustion chamber gasses are often mistaken as oil because it turns the fuel black. Also, many misdiagnose combustion chamber gasses as injector o-ring or injector cup failure, when it's actually an injector not sealing off after injection, allowing gasses into the fuel.Jbuckner, slow.rider and W9in’ Thank this. -
Probably algae, no oil in coolant? Your good sea foam new filter
dunchues, slow.rider and W9in’ Thank this. -
2nd thought welcome to bio diesel
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slow.rider Thanks this.
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slow.rider Thanks this.
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slow.rider and W9in’ Thank this.
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