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Air intake preheater hose

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Old Mar 14th, 2021, 08:48   #1
Joe Harding
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Default Air intake preheater hose

Sounds sophisticated but in reality its a piece of corrugated hose that goes from a cowl around the exhaust manifold to the air intake. It is switches by a wax thermostat. After a while the engine movement shears the pipe and it falls apart. Having tried many options I finally found a fix from CEF (City Electrical Factors) who supply corrugated ducting in 1 m lengths. Its steel and unwinds so it needs tin snips to cut to length but does fit tightly on the 50mm dia ports.
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Old Jul 12th, 2021, 06:28   #2
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Do you have an article number of them?
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Old Jul 12th, 2021, 07:18   #3
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https://www.cef.co.uk/catalogue/cate...ter%5B%5D=50mm

I think this is the one I used. You can buy a single metre length. Please check though
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Old Oct 4th, 2021, 10:26   #4
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A bit late here, but I repaired the original ducting/ pipe using self adhesive aluminium tape bought from Lidl. May help someone else.
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Old Oct 6th, 2021, 17:13   #5
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When running LPG it is usually best to remove that pipe
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Old Oct 7th, 2021, 07:50   #6
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Okay, whys that?
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Old Oct 7th, 2021, 19:42   #7
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1) the carb does not freeze on LPG (the vaouriser does)

2) the change in air temp messes with the fuel mixture
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