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How do I? I get a schematic of the vacuum lines ( either online or in a repair manual, such as Haynes or Chiltons). You need a good work light, some are hard to find. Go along and check each line according to the schematic. To trace a leak from a vacuum line, it is recommended to change all lines. You can get a package of assorted vacuum lines at VIP for cheap, they also sell the T's and splitters. To check a line for a leak, if it is not obvious with the vehicle running. Check one line at a time. Take one line off, but your finger on one end to block it and blow into the other end. Put it back on before checking the next.

~Big PaPa Ford Know Best...

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โˆ™ 2007-11-26 01:04:57
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Q: How do you trace vacuum lines on a 1991 ford bronco with a 302?
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