Piston Slap ? Collapsed lifter? Worn out camshaft lobe?
#1
Piston Slap ? Collapsed lifter? Worn out camshaft lobe?
Hi folks, my 99 civic (NON VTEC, where i live civics didnt come with vtec) has 167 000 miles, and it has been having a loud ticking or knock sound when cold startups, Then when it gets to full operating temperature it fully goes away. It doesnt have any loss of power and i already adjusted the valve lashes. Do you hace any clues? is piston slap/collapsed lifter common problems on these civics ? Also if my civic doesnt have hydraulic lifter is a collapsed lifter posible?
#2
Re: Piston Slap ? Collapsed lifter? Worn out camshaft lobe?
These cars do not have lifters. This is a direct lobe to rocker arm setup.
Piston slap is possible as the piston become out of round.
As long as the sound is going away with engine coming to temp, I wouldn't worry about it. Once it no longer goes away with engine temp, then look into rebuilding or new motor etc.
Piston slap is possible as the piston become out of round.
As long as the sound is going away with engine coming to temp, I wouldn't worry about it. Once it no longer goes away with engine temp, then look into rebuilding or new motor etc.
#3
Honda-Tech Member
Re: Piston Slap ? Collapsed lifter? Worn out camshaft lobe?
A video of the noise would help. Could be a few different things.
If the engine feels healthy and it goes away once it's warmed up, it's probably not super critical/immediate.
If the engine feels healthy and it goes away once it's warmed up, it's probably not super critical/immediate.
#4
Re: Piston Slap ? Collapsed lifter? Worn out camshaft lobe?
Thanks for the replys guys, well i didnt have a clue that these didnt have lifters haha, im sorry for that, so basically the problem may be wornout lobes and piston slap? , what about some loose rocker arm?
¿What can i check when i remove the valve cover off?
Here a video i uploaded of the sound it does when cold :
¿What can i check when i remove the valve cover off?
Here a video i uploaded of the sound it does when cold :
#5
Honda-Tech Member
Re: Piston Slap ? Collapsed lifter? Worn out camshaft lobe?
Thanks for the video.
Noise does sound like it's coming from the block. Most likely it's ring tolerances/piston slap, which is going away when the rings expand at operating temperature.
I wouldn't worry about it unless you start losing power, or notice that you're burning a lot of oil. Just keep an eye on it.
Noise does sound like it's coming from the block. Most likely it's ring tolerances/piston slap, which is going away when the rings expand at operating temperature.
I wouldn't worry about it unless you start losing power, or notice that you're burning a lot of oil. Just keep an eye on it.
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