Jeremy in DE
Member
TO30. Runs and works well. But it has had a minor tick/click for years. Worse when cold. Mostly gone when fully hot.
My mechanical experience is limited, but not zero.
A friend with more knowledge than I thinks it's one of the tappets clicking.
I've had it running on an auxiliary fuel tank with the valve cover off to adjust the tappet clearance according to the manual. That doesn't change it. I briefly adjusted "wrong" to hear that sound. It's a different sound.
A hose in the ear will not identify a specific location of the sound. But I agree with my friend it seems cam/valve/tappet related and probably on the cam shaft side. Not in rocker assembly.
Questions:
A. I've pulled the push rods to examine them as the manual suggests. I don't see scoring or wear, but then again my experience with push rods is limited to this engine. What is normal wear vs time-to-replace wear?
B. Can the tappets be removed to inspect them with the engine mostly together? The manual just says to "replace" them if worn and doesn't say how to remove them from down in there (or precisely what wear justifies replacement).
C. Would it be as likely to be cam shaft itself? How would I diagnose that? My friend thinks not, but then again he also stressed he doesn't know these engines specifically.
My mechanical experience is limited, but not zero.
A friend with more knowledge than I thinks it's one of the tappets clicking.
I've had it running on an auxiliary fuel tank with the valve cover off to adjust the tappet clearance according to the manual. That doesn't change it. I briefly adjusted "wrong" to hear that sound. It's a different sound.
A hose in the ear will not identify a specific location of the sound. But I agree with my friend it seems cam/valve/tappet related and probably on the cam shaft side. Not in rocker assembly.
Questions:
A. I've pulled the push rods to examine them as the manual suggests. I don't see scoring or wear, but then again my experience with push rods is limited to this engine. What is normal wear vs time-to-replace wear?
B. Can the tappets be removed to inspect them with the engine mostly together? The manual just says to "replace" them if worn and doesn't say how to remove them from down in there (or precisely what wear justifies replacement).
C. Would it be as likely to be cam shaft itself? How would I diagnose that? My friend thinks not, but then again he also stressed he doesn't know these engines specifically.