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Author Topic: finding air leak on a diesel  (Read 543 times)

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omegod

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finding air leak on a diesel
« on: 06 February 2015, 16:15:24 »
I'm familiar with the old carb spray trick on petrol's to find an air leak but does the same work on a diesel ?
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Kevin Wood

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Re: finding air leak on a diesel
« Reply #1 on: 06 February 2015, 16:22:29 »
The thing with a diesel is that you have very little vacuum in the intake system due to the fact that it's not throttled. If there is a leak, it will manifest itself as a leak of boost pressure on full load, but it won't draw significant air in at idle.

A good visual inspection is probably the best you can do, although I believe you can use smoke to diagnose it.

What are the symptoms?
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