+1 to what has been mentioned regarding timing chain/sprocket/guide health above
fwiw – I pulled all my lifters and found many to have a ‘sticky’ action to them.
Because there’s just the one orifice – and because there are 3 small chambers within – I soaked them and swished them around in gasoline.
"The self-adjusting hydraulic tappets function with the use of engine oil pressure, internal chambers and orifice control.
1. Engine oil pressure
2. Large oil chamber
3. Small oil chamber
4. High pressure chamber"
Here are the steps I took:
1. Soak in gasoline
2. Blow compressed air into orifice (you’ll see oil, foam, and goop come out)
3. Dunk and swish in gasoline
– repeat steps 2 & 3 until no “goop” comes out and lifters have smooth action to them
4. Soak lifters in light-weight oil
As you blow compressed air into orifice, you’ll feel the lifter pop into extended position. After that, it will either retract – or be stuck. You’ll be able to push it into retracted position with gentle pressure. This is definitely one of those jobs where you’ll want to be wearing those blue surgical gloves.
As you repeat steps 2 & 3 – you’ll be able to detect a smoother action to them as all the gook is flushed from them.
It was labor-intensive – but I feel good about having flushed the lifters in this manner.
(free > new lifters)
After sorting my timing issues and hand-flushing the lifters – I was very pleased with how quiet and “tick-free” engine became. Your results may vary.
fwiw – I pulled all my lifters and found many to have a ‘sticky’ action to them.
Because there’s just the one orifice – and because there are 3 small chambers within – I soaked them and swished them around in gasoline.
"The self-adjusting hydraulic tappets function with the use of engine oil pressure, internal chambers and orifice control.
1. Engine oil pressure
2. Large oil chamber
3. Small oil chamber
4. High pressure chamber"
Here are the steps I took:
1. Soak in gasoline
2. Blow compressed air into orifice (you’ll see oil, foam, and goop come out)
3. Dunk and swish in gasoline
– repeat steps 2 & 3 until no “goop” comes out and lifters have smooth action to them
4. Soak lifters in light-weight oil
As you blow compressed air into orifice, you’ll feel the lifter pop into extended position. After that, it will either retract – or be stuck. You’ll be able to push it into retracted position with gentle pressure. This is definitely one of those jobs where you’ll want to be wearing those blue surgical gloves.
As you repeat steps 2 & 3 – you’ll be able to detect a smoother action to them as all the gook is flushed from them.
It was labor-intensive – but I feel good about having flushed the lifters in this manner.
(free > new lifters)
After sorting my timing issues and hand-flushing the lifters – I was very pleased with how quiet and “tick-free” engine became. Your results may vary.
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