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diesel fuel additive

1315 Views 6 Replies 4 Participants Last post by  Rmac58, 
roach_juts
i just got a 1979 24d diesel , is it ok that i used a diesel fuel additive to clean its fuel lines & carb? the idel is a little bit rought

any recomendation or tips ?

thanks:)
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79Mercy
The additive may have clogged up your fuel filters, I would replace them both and see if it solves your rough idle.
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