Vacuum Leak
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Vacuum Leak
While I was replacing a heater hose today, I shut the truck off after testing and heard what I thought was a vacuum leak. A small buzzing sound that petered out after 20-30 seconds. Since my '88 F-250 460 has a maze of vacuum hoses on top of the engine, is there any easy way to locate it?
Thanks in advance for any help you can give,
Paul
Thanks in advance for any help you can give,
Paul
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Vacuum Leak
Paul, this may sound strange, but take your old heater hose and clean off one end. Start your engine, put the clean end next to your ear and use the other end to listen for the leak. If you have a leak you'll find it.
Good Luck
Kevin
Good Luck
Kevin
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Vacuum Leak
Thanks for the tips all. Due to a rough idle, I suspect the leak may be large, since it's pretty cold around here and I don't have a garage, I'll check it next time it warms up.
Thanks again, Paul
Thanks again, Paul
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Vacuum Leak
Hi, one other thing you might check that would cause a rough idle is where the power brake vacume hose is hooked up it could have been jarred loose on the engine or it could be at the booster itself but that will cause a buzzing sound and a rough idle. JOHN FATFORTY
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From: Durham
Vacuum Leak
Being as this is associated with the replacement of the heater hose, I would begin my search by checking the vacuum cannister that sits on the fender under or next to your heater hose. The cannister builds up a reserve to run the vacuum controled heater or a/c doors. It's very easy to knock the vacuum hose off the cannister and cause a leak.
'82 F150 2WD w/351W (orig 300 I6)
Slik
'82 F150 2WD w/351W (orig 300 I6)
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