Lifters are knocking.........
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Junior User
Joined: Dec 2000
Posts: 92
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Lifters are knocking.........
Just bought a 79 F150. It in real great shape. 400 motor has
105,000 original miles on it. When I first take off, I can hear the lifters. It quitens up when I pick up speed. When I slow down again, and start up a grade I again hear them. Other than that the truck runs great. I tried putting high grade gas it in but it didn't quiten them down. Any suggestions.
105,000 original miles on it. When I first take off, I can hear the lifters. It quitens up when I pick up speed. When I slow down again, and start up a grade I again hear them. Other than that the truck runs great. I tried putting high grade gas it in but it didn't quiten them down. Any suggestions.
Fleet Owner
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
Lifters are knocking.........
Yak, if you are wanting to try by adding things get a quart of Marvels Mystery Oil, and add it to the crank case and see if it helps. It is good stuff, can't guarentee it will fix your problem, but it will be good for the truck. :-)
John
jowilker
Club FTE since 01 01
NC Chapter
66 F100s
In the still cool hours of the night,
you can hear chevys rusting away.
John
jowilker
Club FTE since 01 01
NC Chapter
66 F100s
In the still cool hours of the night,
you can hear chevys rusting away.
Thread Starter
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Junior User
Joined: Dec 2000
Posts: 92
Likes: 0
Lifters are knocking.........
I was thinking the oil pressure. I'll check it out. I had a 74
a few years ago with a 351 with lifters that sounded like hell. But it ran great. Its just irritating to hear em'.
a few years ago with a 351 with lifters that sounded like hell. But it ran great. Its just irritating to hear em'.
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rratliff23
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
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Sep 2, 2002 08:02 AM
