Consider what you stand to gain by saving 14 year old vacuum line vs. what
you stand
to lose by putting your head under the hood of a running engine and spraying a
flammable
aerosol. Besides, you can probably buy enough hose to do the entire engine for
the price
of a can of WD-40 or starter fluid.
Roger Gibbs wrote:
> Jim,
>
> I will second the advice given my "M" below (makes me souund like James Bond
>to say
> that).
>
> In my experience there are large differences in the life expectancy of
>"rubber"
> hoses. Depending on the use in your area of gasoline additives, the presence
>or
> lack of oil leaks/fumes and the routing of hoses near heat sources can all
>cause.,in
> some cases a dramatic, a shortening of the life of a hose. If you do go and
>buy
> enough bulk hose length to replace the hoses a couple of good things will
>results:
> 1. You will have new hoses of known quality, 2. you may find the vacuum leak
>for
> certain (there may be a slit is a line that you cannot see), 3. You will have
>a
> better idea of the condition of other parts of the car, (might find a broken
>or
> fraying wire, a developing fluid leak, etc.).
>
> In response to your question about using starter fluid. I have used liquid to
> diagnois vacuum leaks , although I do not use starter fluid. You do not
>necessary
> need to feed a fuel, you are trying to stop a vacuum leak. Say you have a
>torn
> gasket between two machined surfaces. A liquid will be pulled in and
>temporaily
> seal the leak. I have used carb cleaner and WD-40. Just a little. This has
>been
> successful for me. These fluids are also flammable and I am careful to use
>just a
> little and I haven't had the need to spray them near a hot exhaust manifold,
>and
> probaly never will. If you think you know the area where a leak might exist
>you
> could also spread a little grease to offer a seal.
>
> Good luck!
>
> Oh, also remeber that the vacuum line may be used to actuate air conditioning
>valves
> and such within the cab. If the condition comes and goes based on a/c
>controls you
> might want to look there.
>
> -Roger
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