Nice Whistle
Thread Starter
|
Freshman User
Joined: Mar 2016
Posts: 28
Likes: 0
Nice Whistle
My 69 240 I6 has started whistling after I get up past 50mph.
If im speeding up it goes away, but after I let off just a little I get a nice loud whistle again. When I shut the truck off it goes away and does not come back tell I get it back up to speed. any thoughts?
If im speeding up it goes away, but after I let off just a little I get a nice loud whistle again. When I shut the truck off it goes away and does not come back tell I get it back up to speed. any thoughts?
Fleet Owner
Joined: Dec 2009
Posts: 20,678
Likes: 82
From: NorCal
Not much to go on... Can you clue us in on where it **might** be coming from? Front, back, underneath??????????????????
Is it a whistle like an air leak or more of a sustained screech???
I'm thinking a loose or glazed drive belt but dunno.......
Is it a whistle like an air leak or more of a sustained screech???
I'm thinking a loose or glazed drive belt but dunno.......
Senior User
Joined: Oct 2015
Posts: 445
Likes: 0
From: Bismarck, ND
Sounds like a vacuum leak as HIO said. But a whistle from a vacuum leaks is pretty weird. Spray some carb cleaner around the base and vacuum lines of your carb and note of any idle changes and for the whistling to stop.
Assuming it is a vacuum leak it seems to be from the heat of the engine causing expansion of some sort
Assuming it is a vacuum leak it seems to be from the heat of the engine causing expansion of some sort
Logistics Pro
Joined: Aug 2015
Posts: 4,093
Likes: 14
From: Lind, WA- Eastern WA
What tune is it whistling? Sorry, I got carried away. IF it's not around the carb (Spacer gasket?) AND the vacuum lines and caps are good, then check the belts and the pulleys. Check the water pump for a leak around the shaft (maybe the bearing is going bad?). I like the whistling tune in the latest Maytag commercial, now I can't get it out of my head.
Posting Guru
Joined: Mar 2016
Posts: 1,412
Likes: 1
From: Barre Mass
Both my 95 f150 300 I6 and my 94 Bronco 5.0 had a whistle but only when temps below 20 deg. I think its a Ford thing. Something I never figured out.
Trending Topics
Senior User
Joined: Jul 2015
Posts: 104
Likes: 0
Sounds like a vacuum leak as HIO said. But a whistle from a vacuum leaks is pretty weird. Spray some carb cleaner around the base and vacuum lines of your carb and note of any idle changes and for the whistling to stop.
Assuming it is a vacuum leak it seems to be from the heat of the engine causing expansion of some sort
Assuming it is a vacuum leak it seems to be from the heat of the engine causing expansion of some sort
I had this once and it turned out to be one bolt holding the carb down had loosened enough to allow it to suck air in at that corner and cause a whistle.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!
Joe Kucinski
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!
Michael S. Palmer
The Best F-150 Deal of Every Trim Level (XL through Raptor)
Joe Kucinski
Thread
Thread Starter
Forum
Replies
Last Post
scottlane
1973 - 1979 F-100 & Larger F-Series Trucks
2
Nov 4, 2006 04:58 PM