03-28-2007, 07:15 AM
Adam, is the chain tensioner hydraulic or strictly mechanical? the stories i've heard of chain tensioners is that they are loud at idle when they fail, but it doesn't cause loss of power, just a ton of noise.
i very much doubt it's rod bearings. it wouldn't be intermittent or temperature related, and would if anything be worse when cold due to tolerances IMO. also the service life would be alot longer unless something was f'd up during installation.
valve shim would also seem to be something that would affect at all rpms, all the time, regardless of temperature.
i would put my money on an injector or stuck valve. at least the injector is easy to check. i don't know much about how to diagnose a stuck valve.
you're certain everything is cool in sparkplug world? maybe check the condition of your plugs just in case
i very much doubt it's rod bearings. it wouldn't be intermittent or temperature related, and would if anything be worse when cold due to tolerances IMO. also the service life would be alot longer unless something was f'd up during installation.
valve shim would also seem to be something that would affect at all rpms, all the time, regardless of temperature.
i would put my money on an injector or stuck valve. at least the injector is easy to check. i don't know much about how to diagnose a stuck valve.
you're certain everything is cool in sparkplug world? maybe check the condition of your plugs just in case
2010 Civic Si
2019 4Runner TRD Off-Road
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Past: 03 Xterra SE 4x4 | 05 Impreza 2.5RS | 99.5 A4 Quattro 1.8T | 01 Accord EX | 90 Maxima GXE | 96 Explorer XLT
2019 4Runner TRD Off-Road
--------------------------
Past: 03 Xterra SE 4x4 | 05 Impreza 2.5RS | 99.5 A4 Quattro 1.8T | 01 Accord EX | 90 Maxima GXE | 96 Explorer XLT