Flywheel cracking?
Camel Trophy
Joined: Oct 2016
Posts: 4,867
Likes: 1,410
From: Michigan
The way it is more apparent on start up, especially when cold, and diminishes as it warms up...an exhaust leak seems more plausible. Which, could be an exhaust leak at exhaust system or head gasket.
Brian.
Brian.
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Mudding
Joined: Feb 2018
Posts: 215
Likes: 21
From: Kauai, Hawaii
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Mudding
Joined: Feb 2018
Posts: 215
Likes: 21
From: Kauai, Hawaii
Well I checked both exhaust manifolds and each connection to the lower sections, both seem fine. But man they’re kind of a pain to inspect. Granted the entire exhaust system is covered in surface rust so trying to see if those nuts are loose is a failed attempt. I’ll spray with pb blast and see if the budge.
Winching
Joined: Apr 2016
Posts: 524
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From: Chattanooga TN
Before I did that, I would check for leaks with some soapy water. I used a shop vac that also serves as a blower. Regular leaf blower would work as well. I used a vac hose and shop rag and stuffed one end in the tailpipe, other end connected to the blower. Turn it on and take a spray bottle with soapy water and spray each connection. If you have a leak, it will show up quickly.
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Mudding
Joined: Feb 2018
Posts: 215
Likes: 21
From: Kauai, Hawaii
Before I did that, I would check for leaks with some soapy water. I used a shop vac that also serves as a blower. Regular leaf blower would work as well. I used a vac hose and shop rag and stuffed one end in the tailpipe, other end connected to the blower. Turn it on and take a spray bottle with soapy water and spray each connection. If you have a leak, it will show up quickly.
Ive done this method before checking for vacuum leaks on my old 4Runner. Used a garden hose and painters taped it around and around each connecting end. Then put the vacuum as far away inside the back of the house to be able hear for leaks without noise pollution from the vac.
Last edited by TaylorCadence; Jun 21, 2018 at 07:25 PM.
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Mudding
Joined: Feb 2018
Posts: 215
Likes: 21
From: Kauai, Hawaii
My engine needed main, rod and cam bearings.
It ticked loudly as it warmed up, the oil pump gears were broken too.
The sound seemed to come mostly from the driver's side rear of the engine. After replacing the oil pump, as well as lifters, the noise remained, leading me to belive I had a slipped liner, which it did not. I also thought it may be the flex plate, but that was good too.
I expected a knock, not a tick, given the problem.
My 4.6 has 122k miles, ran excellent, and did not heat, it just made a come and go racket.
Pull the rod caps, and look up at your cam bearings too.
I'm not saying they are definately the problem, but it is very possible, and would not be uncommon for these engines. Not a terrible job to do either.
It ticked loudly as it warmed up, the oil pump gears were broken too.
The sound seemed to come mostly from the driver's side rear of the engine. After replacing the oil pump, as well as lifters, the noise remained, leading me to belive I had a slipped liner, which it did not. I also thought it may be the flex plate, but that was good too.
I expected a knock, not a tick, given the problem.
My 4.6 has 122k miles, ran excellent, and did not heat, it just made a come and go racket.
Pull the rod caps, and look up at your cam bearings too.
I'm not saying they are definately the problem, but it is very possible, and would not be uncommon for these engines. Not a terrible job to do either.
Last edited by TaylorCadence; Jun 22, 2018 at 01:01 PM.
Pro Wrench
Joined: Oct 2011
Posts: 1,709
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From: NE PA
I've found the tick can sometimes be the valve rockets. Theres a little hole that gets clogged.
We had a tick, I disassembled the engine in 2013 to do the head gaskets and found some of the holes clogged. Cleaned the holes and tick is no longer there.
We had a tick, I disassembled the engine in 2013 to do the head gaskets and found some of the holes clogged. Cleaned the holes and tick is no longer there.
