Ticking
#1
Racer
Thread Starter
Ticking
Upon start up, I have a ticking/tapping sound. After about a minute or two, it goes away. It sounds like the passenger side. Engine has about 6,000 miles on it. I've heard listen to the valve covers with a screwdriver, bad lifter, rocker arm adjustment or heat riser. Wanted to ask you corvette forum guys. What are your thoughts or experiences with this? Thanks in advance.
Wanted to take this pic also where heat riser is.
Wanted to take this pic also where heat riser is.
Last edited by 7T3stinger; 03-15-2024 at 04:42 PM. Reason: Pictures
#2
Le Mans Master
My thought: It is a lot easier to hear a sound in a YouTube video than it is to guess the cause of a sound based on a description.
Is your heat riser connected and functional? Even some photos would help.
Is your heat riser connected and functional? Even some photos would help.
#3
Racer
Thread Starter
Honestly I dont even know if it is connected. Never even knew that was a thing. I'm not that much of a mechanic. I will have to locate it later tonight after work.
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Bikespace (03-15-2024)
#4
Safety Car
Upon start up, I have a ticking/tapping sound. After about a minute or two, it goes away. It sounds like the passenger side. Engine has about 6,000 miles on it. I've heard listen to the valve covers with a screwdriver, bad lifter, rocker arm adjustment or heat riser. Wanted to ask you corvette forum guys. What are your thoughts or experiences with this? Thanks in advance.
You might just have a sticking lifter as well.
#5
Racer
Thread Starter
Hopefully you dont have a cam lob starting to fail. You could also remove the valve covers and look for a loose rocker arm. you will want to rotate the engine either by hand or with the starter and the distributor power wire disconnected and check the arms at multiple points in their travel.
You might just have a sticking lifter as well.
You might just have a sticking lifter as well.
#7
Le Mans Master
Looking forward to photos and/or video. Please take off the air filter assembly to give us a clear view.
If a TVS is closing/opening and changing the heat riser position, that should be really easy to see.
If a TVS is closing/opening and changing the heat riser position, that should be really easy to see.
#8
Racer
Thread Starter
#9
Racer
Thread Starter
#10
Pro
No much to go on, the engine was rebuilt 6K ago? Is it still flat tappet, if so what kind of oil are you using? Get a length of garden hose or similar, using it like a stethoscope try to find where its coming from. Could be a lot of things, exhaust manifold leak causes a tick like sound, or valve train issue, you first need to know where it is coming from before speculating...
60
60
#11
Le Mans Master
#12
Racer
Thread Starter
No much to go on, the engine was rebuilt 6K ago? Is it still flat tappet, if so what kind of oil are you using? Get a length of garden hose or similar, using it like a stethoscope try to find where its coming from. Could be a lot of things, exhaust manifold leak causes a tick like sound, or valve train issue, you first need to know where it is coming from before speculating...
60
60
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augiedoggy (03-15-2024)
#13
Racer
Thread Starter
#14
Safety Car
I ad a jeep and a honda ridgeline that would tick on startup for a couple minutes until things warmed up enough to where it stopped in both cases I read the 2 engine were prone to it if the valve clearance adjustments needed to be redone in that case due to high miles or a lifter was sticking. I'm not saying thats whats happening here but it sounds like a good possibility. Especially since it was just assembled 6k ago. it could also be something else entirely like an exhaust manifold leak thats sealing itself up as it expands. I had a 360 in my old ram that did this with the drivers side header.
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Bikespace (03-15-2024)
#16
Racer
Thread Starter
thats good new that its a roller as it makes a wiped lobe unlikely.
I ad a jeep and a honda ridgeline that would tick on startup for a couple minutes until things warmed up enough to where it stopped in both cases I read the 2 engine were prone to it if the valve clearance adjustments needed to be redone in that case due to high miles or a lifter was sticking. I'm not saying thats whats happening here but it sounds like a good possibility. Especially since it was just assembled 6k ago. it could also be something else entirely like an exhaust manifold leak thats sealing itself up as it expands. I had a 360 in my old ram that did this with the drivers side header.
I ad a jeep and a honda ridgeline that would tick on startup for a couple minutes until things warmed up enough to where it stopped in both cases I read the 2 engine were prone to it if the valve clearance adjustments needed to be redone in that case due to high miles or a lifter was sticking. I'm not saying thats whats happening here but it sounds like a good possibility. Especially since it was just assembled 6k ago. it could also be something else entirely like an exhaust manifold leak thats sealing itself up as it expands. I had a 360 in my old ram that did this with the drivers side header.
#17
Racer
Thread Starter
#18
Racer
Thread Starter
I looked up that part and it doesnt look familiar. I have an Edelbrock Air Gap intake with a 750 carb. just saying
Last edited by 7T3stinger; 03-15-2024 at 01:26 PM.
#19
Dr. Detroit
Member Since: Mar 2012
Location: New Braunfels Texas
Posts: 9,964
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Not for a small amount of time but that guy is on it's way to causing you grief........gut the flapper out of it or get the delete spacer available from all Vette vendors....
The miserable POS heat riser should never go back on these old cars.......
Jebby
The miserable POS heat riser should never go back on these old cars.......
Jebby
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Bikespace (03-15-2024)
#20
Racer
Thread Starter
I was talking about a sticking lifter.