Tapping noises at warmup
#1
1999 Civic Driver
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Location: Newmarket, ON, Canada
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Tapping noises at warmup
When starting up my car after sitting for a while, I hear a strange tapping noise only at warmup and then it goes away.
I'll hear duh guh duh guh then no tapping then duh guh duh guh duh guh until it goes away after a few seconds. Are my valves sticking?
After warmup there is no other tapping noises.
I'll hear duh guh duh guh then no tapping then duh guh duh guh duh guh until it goes away after a few seconds. Are my valves sticking?
After warmup there is no other tapping noises.
#2
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It's likely your valves, a lot of Hondas are known for this. They don't seat properly when cold, and by the time the engine heats up and metals expand, it goes away.
If it's really bad a valve adjustment can help a little bit
If it's really bad a valve adjustment can help a little bit
#3
If it is a DOHC VTEC motor, it may be the LMA's (Lost Motion Assemblies) It is a common problem found in these motors.
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#4
1999 Civic Driver
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Originally Posted by AF
It's likely your valves, a lot of Hondas are known for this. They don't seat properly when cold, and by the time the engine heats up and metals expand, it goes away.
If it's really bad a valve adjustment can help a little bit
If it's really bad a valve adjustment can help a little bit