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Topic
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Hi, i recently had to replace a couple of core plugs on a 1999 model ford fiesta. To do that i had to remove the inlet manifold and i noticed there was a thick black coating of something inside it. To me it looked as though it was a mixture of oil and carbon?
I figured its probably normal in a dirty old diesel but i do my best to keep my car in the best condition i can.
So i was wondering:
1) is this a major problem?
2) what do i use to clean it out?
Whatever it is is a good 3-4mm thick, so i’d take a guess that the engine is not breathing the way it should be.
Thanks in advance to anyone who can shed any light on this.
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Replies
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You can clean the crud out with some soap and hot water and a brass bottle brush. If it’s really caked on, you can spray on some oven cleaner. If the manifold is aluminum, the oven cleaner (lye) will etch it somewhat but shouldn’t affect it’s functionality, just keep the lye off the machined mating surfaces.
I submit this both as a semi-serious answer…
…. and to see the reactions of the rest of the crew.
Please note, I don’t actually recommend doing this, but it DOES work. A friend of mine did this while I watched.. If you choose to go this route, make -very- sure you keep the towel wet.
(I’d -really- recommend the oven-cleaner and brush route, though).
-Hinoki
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