Hey all! Need help diagnosing an engine knock.
I bought this fj 40 with 2f engine from behind a Montana barn.
Was sitting outside unused for 10 years. 114k miles. 1981 fj40. All original.
So I did all the usual when starting after storage. Rebuilt carb. Fuel Tank , filters and lines cleaned. Marvel oil in each cylinder. Ran till warm with an added quart of Marvel Oil in the crankcase. Heard a consistent loud ‘knock,knock,knock’. Seemed louder than just valve ‘chatter’ .
Then checked Oil pressure. It was consistent and strong 50+ lbs.
Then changed oil and filter. Old oil was like new. No water. No gunk . No metal.
All went well. Filled with 20-50. Ran again. Same knock.
Have not run engine for more that 5 minutes total.
Asked old owner , he maintained well and Said nothing abnormal with engine when parked.
I listened with a mechanic scope to the lower engine block on both sides and that seemed normal. It sounded a bit louder when scoped at the valve cover. But really only heard normal valve ‘clicking’ with scope.
I’ve included a few pics of my rig and a video clip with the knock.
Any ideas of the noise before I crack the lid open?
Sound familiar? Stuck lifter?
Does anybody hear anything major?
My first fj40. Cannot wait to drive it, but don’t want to hurt the engine. Being cautious.
Thanks in advance for responding.
PS I cannot post the video?? Any tips on how to post a small ‘.mov’ video to the forum?
JDS
I bought this fj 40 with 2f engine from behind a Montana barn.
Was sitting outside unused for 10 years. 114k miles. 1981 fj40. All original.
So I did all the usual when starting after storage. Rebuilt carb. Fuel Tank , filters and lines cleaned. Marvel oil in each cylinder. Ran till warm with an added quart of Marvel Oil in the crankcase. Heard a consistent loud ‘knock,knock,knock’. Seemed louder than just valve ‘chatter’ .
Then checked Oil pressure. It was consistent and strong 50+ lbs.
Then changed oil and filter. Old oil was like new. No water. No gunk . No metal.
All went well. Filled with 20-50. Ran again. Same knock.
Have not run engine for more that 5 minutes total.
Asked old owner , he maintained well and Said nothing abnormal with engine when parked.
I listened with a mechanic scope to the lower engine block on both sides and that seemed normal. It sounded a bit louder when scoped at the valve cover. But really only heard normal valve ‘clicking’ with scope.
I’ve included a few pics of my rig and a video clip with the knock.
Any ideas of the noise before I crack the lid open?
Sound familiar? Stuck lifter?
Does anybody hear anything major?
My first fj40. Cannot wait to drive it, but don’t want to hurt the engine. Being cautious.
Thanks in advance for responding.
PS I cannot post the video?? Any tips on how to post a small ‘.mov’ video to the forum?
JDS