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Old 11-18-2003, 12:40 PM
chazola's Avatar
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Join Date: Nov 2003
Location: Dorset, United Kingdom
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Air Cleaner Hose Question

I noticed on the air cleaner hose to the engine i also have a small yellowish colour (oil line?) hose that has cracked and broken in two.
Anyone know if this is important and should be replaced?
91 300e with M103 engine.
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Old 11-18-2003, 01:57 PM
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Join Date: Aug 2003
Location: Orlando
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I had the sam hose break. Thanks to others on this forum they identified it , I bought a new hose at PEP Boys and replaced it. Good Luck. (My first picture wasn't as good as yours but it was the same hose.

Broken hose? What is it
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Old 11-18-2003, 09:20 PM
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Join Date: Mar 2003
Location: Southern California
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It's the vent line from the fuel pressure regulator, and they all seem to break there on 103s. You can replace it or splice it together with a short piece of 1/8" ID rubber tubing.

It appears to be nylon material. The ID is 2 mm, OD is 4 mm, and total length is 11" on a 103.

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