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XC90 '02–'15 General Forum for the P2-platform XC90 model |
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Inlet ducting cloggedViews : 655 Replies : 8Users Viewing This Thread : |
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Apr 3rd, 2024, 11:32 | #1 |
Junior Member
Last Online: Apr 6th, 2024 10:56
Join Date: Jul 2020
Location: Andover
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Inlet ducting clogged
Just pulled the elbow between the throttle body and the inlet manifold, and as expected (same on my previous xc90) it's chocker with black oily sludge.
No doubt the throttle body will be too, and the inlet manifold. And.....the ducting to and from the intercooler, the intercooler itself.... Is there a method of cleaning all of this, and any tips on reducing/preventing the build up? |
Apr 5th, 2024, 01:33 | #2 |
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Last Online: May 8th, 2024 22:30
Join Date: Aug 2018
Location: Brisbane
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It's "only" EGR to head that cokes up. I just regard it as a horrible job that you do every 150-200k and change the swirl flaps at the same time. Oven cleaner and solvents just made it harder to move for me.
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Apr 5th, 2024, 09:20 | #3 |
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Last Online: Today 16:33
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Location: Manchester
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no real way of stopping this it just one of the maintenance jobs that need doing before it makes a fault that shows throttle body /egr ect
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Apr 5th, 2024, 11:47 | #4 |
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Last Online: Apr 6th, 2024 10:56
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Thanks guys. Yes, strangely I pulled the pipe off the upwind end of the throttle body thing (from the intercooler) and that was quite (relatively) clean.
I guess a can of carb cleaner and a thorough blathering is the approach! |
Apr 10th, 2024, 11:57 | #5 |
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Last Online: Today 11:53
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Location: Cardiff
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Clean and EGR (software) delete worked for me. Nice and clean 40k later, just they was it was designed.
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Current Volvo: XC90 D5 2014 120K miles. Running lovely on clean green Biodiesel Previous volvo: V70 D5 2009 - T5 convertible - V40 1.8 - 343GL - the one with the elastic band transmission! |
Apr 10th, 2024, 14:52 | #6 | |
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Quote:
Get yourself some carb cleaner and give it a good scrub. Its a very messy job though, so make sure you cover your floor and wear gloves if you can. I know lots of people don't like wearing them, but if you don't, you'll be scrubbing your hands and the pipework too.
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2007 S80 2.4 D5 (P3) - 110,000 miles 2008 V70 2.4 D5 (P3) - 163,000 miles |
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Apr 10th, 2024, 22:07 | #7 |
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Apr 11th, 2024, 09:52 | #8 |
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Last Online: Today 13:21
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Location: Lancashire
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The swirl flaps themselves aren't very expensive. you can buy the whole kit with gasket and seals for about £60. The problem is whether the injectors come out freely or not. A siezed injector can cause a whole world of pain and that pain comes at a price.
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Apr 15th, 2024, 05:35 | #9 |
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Last Online: May 8th, 2024 22:30
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LOL I'm a risk taker, and prices in Australia/shipping from UK are high, so I used an Aliexpress swirl flap kit for $A40 (about the cost of a genuine swirl flap linkage) like this:
https://www.aliexpress.com/item/1005005262067417.html It seemed OK quality, and OEM swirl flaps are not great anyway.... I cleaned everything, including the injector seats with dowel and some very fine sandpaper glued to the end of the dowel, and reused everything else, including the clamps, which I bent back to provide tension. Apparently injector seizure is rare in D5s and mine came out easily. Kept them in order though. Everything has been fine - no diesel, injector seat, or oil leaks, and swirl flaps are now functioning. Runs a bit smoother, but not a massive change to performance. |
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