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best pour in tank injector cleaner?

Who has had good luck with a certain cleaner? mine are '91 nissan 300zx injectors, i have one that must have carbon in it because it fires but not consistently, they are side feed like subaru injectors.

please- I don't care what the bottle, website, or guy on a tv car show said, i am only interested in what you have actually observed

2 Answers

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  • Stacey
    Lv 4
    1 decade ago
    Favorite Answer

    the best ive found is from any general motors dealer, ask for top engine cleaner. good stuff but it aint that cheap but you get what you pay for especially being a dealer item.

  • Anonymous
    1 decade ago

    I have found that 3M injector cleaner is far better than most on the market

    Source(s): I am the assisant manager at a part store and have used alot of products
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