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Thread: Cleaning Intake Manifold/Tumble flaps

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    Regular Member Shrimpy's Avatar
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    Default Cleaning Intake Manifold/Tumble flaps

    Right I know there are dozens of threads about the flaky 150 Inlet manifold set up but I can't find the exact answer after a search so here goes.

    Yesterday I cleaned the EGR and Throttle body both were very caked in oily carbon plus baked on carbon. Most worryingly was the vast amount of sludgy carbon I pulled out of the EGR inlet housing and after taking off the Throttle body I could get my finger into the manifold and scoop out around a couple of creme egg sized amounts of sludge.

    Reassembly had been fine and with a semi blanking plate from fiat Ive cured the pre 1500k flat spot and it feels good and pulls well.

    My question is how to get the rest of the crud out of the manifold and off the tumble flaps it must certainly be choking . Am I looking at a new manifold , can I take it off and clean it or would carb cleaner work sprayed directly into the manifold. ( I have seen this mentioned on another thread but no results were posted ) ?

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    Regular Member ptrehearn152's Avatar
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    hi mate the only way to do properly is to remove the inlet manifold from the car completely and give it a good scrape out then use either carb cleaner or de-greaser, just squirting carb cleaner into the manifold won't do anything as it will dry/evapourate very quickly, it is best to use new gaskets to make a good seal when the jobs done, hope you get it sorted.

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    Regular Member Shrimpy's Avatar
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    Cheers buddy was hoping to avoid removing the manifold but I find nothing is as hard when you get stuck in. Have you done yours , did it work and any tips ?

    Thanks again

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    Regular Member ptrehearn152's Avatar
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    yes done mine a few times now, tips are be methodical and thorough, i cleaned mine with diesel and a paint brush as diesel is a good degreaser but then you have to get rid of the diesel, i did this with carb/brake cleaner, it's well worth it in the end and i got good mpg and power when i had done.

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