4.9L Timing Gear Fail???
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4.9L Timing Gear Fail???
Hi,
I was running down the Interstate yesterday on a trip and my engine just stopped...DEAD, no power!
Had the tow truck stop at a shop and had the mechanic scan the engine (I was thinking the computer shot?)
They said they thought the timing gears were shot?
It is now going to a real Mechanic, but are the straight 6 engines known for this???
Engine has only 85,000 miles on it?
What are my chances no bent valves or rods?
Didn't hear any knock when it quit....fingers crossed!
I was running down the Interstate yesterday on a trip and my engine just stopped...DEAD, no power!
Had the tow truck stop at a shop and had the mechanic scan the engine (I was thinking the computer shot?)
They said they thought the timing gears were shot?
It is now going to a real Mechanic, but are the straight 6 engines known for this???
Engine has only 85,000 miles on it?
What are my chances no bent valves or rods?
Didn't hear any knock when it quit....fingers crossed!
Lead Driver
Joined: May 2011
Posts: 5,775
Likes: 443
It's very common for the 300 cam gear to chunk teeth, it's a nylon gear.
Take your distributor cap off and watch the rotor while cranking. If it doesn't spin, check dizzy gear...if dizzy gear is in tact, it's your cam gear.
Replace crank and cam with steel gears and you won't have to worry about it.
Take your distributor cap off and watch the rotor while cranking. If it doesn't spin, check dizzy gear...if dizzy gear is in tact, it's your cam gear.
Replace crank and cam with steel gears and you won't have to worry about it.
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Cargo Master
Joined: Mar 2007
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From: Arcadia, Fla
MAKE SURE they clean out the oil pan from the plastic cam gear parts! That will plug up the oil pickup screen and cause major problems!
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Thanks!
I'll look in to it!
New User
Joined: Oct 2021
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please do ! I went down this road twice as the Ford Dealership that repaired my engine the first time did not and I ended up with a trashed motor and buying a junkyard engine ( that shat its timing gears 6 most. Later )
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zaktpl
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
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Jul 24, 2019 08:43 AM