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VW MKIV-A4 TDIs (VE and PD) This is a general discussion about A4/MkIV Jetta (99.5-~2005), Golf(99.5-2006), and New Beetle(98-2006). Both VE and PD engines are covered here.

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Old November 15th, 2018, 22:31   #31
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Location: Portland, effing Oregon

The one time I've de-gunked an IM I scraped every hole out best I could with china grade butter knives, into a trash bag-lined box. Then soaked the bugger in ~5 gallon bucket of Awesome(tm) degreaser for a week. Then took a few varied sized bottle brushes and went at it deep as possible, more rinsing with the degreaser and all nice and shiny.
2003 Jetta TDI 1.9L 5-speed
All Stock except: Ventectomy
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Old November 16th, 2018, 06:43   #32
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Location: Niceville, FL
Fuel Economy: 53/48/42

I soak 'em in diesel fuel overnight. It just falls out after that, and a pressure washer finishes the job. Just don't put the "used" fuel in your tank after that! (Filtering it and keeping it as parts cleaner works just fine; diesel is an excellent parts cleaner for such things -- I have a 5 gallon can of it that I use for exactly that purpose.)

The fire method works too....
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Old November 16th, 2018, 16:49   #33
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Originally Posted by [486] View Post
fire is the only way

spent days scrubbing mine in gasoline and still some more chunks came out when I tried torching it afterwords
Fire and compressed air work amazing...I love cleaning intakes this way...fast and the pyro aspect is just a bonus

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