colinnwn Posted April 12, 2019 Share Posted April 12, 2019 Hi, I've noticed when I'm at highway speeds with the radio off and I lightly accelerate or decelerate, I can hear what sounds like light valve tick that lasts about 2 seconds and goes away until the next light accel or decel. I have no current OBDC codes. A while back I had the one that can be the sensor or the VVT assembly. I replaced the sensor and it hasn't come back. Has anyone noticed anything similar and know what the problem is? I'm concerned this means the engine has a big problem. Thanks. Sent from my SM-N950U using Tapatalk Link to comment Share on other sites More sharing options...
colinnwn Posted April 13, 2019 Author Share Posted April 13, 2019 Hum... Now I hear the light ticking at idle too. But I can only hear it with my windows down. Sent from my SM-N950U using Tapatalk Link to comment Share on other sites More sharing options...
Guest Posted April 13, 2019 Share Posted April 13, 2019 Could it be the injectors? Link to comment Share on other sites More sharing options...
TowndawgR50 Posted April 13, 2019 Share Posted April 13, 2019 (edited) Did you ever do the power valve screw service? A worsening of the condition sounds like it could be a fastener coming loose. Edited April 13, 2019 by TowndawgR50 1 Link to comment Share on other sites More sharing options...
RainGoat Posted April 13, 2019 Share Posted April 13, 2019 Oh,@TowndawgR50 I remember that same fateful question from you & all the sadness that followed. Link to comment Share on other sites More sharing options...
colinnwn Posted April 13, 2019 Author Share Posted April 13, 2019 It sounds more like the valve lash noise at engine startup, but I guess it could be injectors.I have a manual transmission, and everything I've read, including one person on this forum who took apart their intake, said the manual transmission engines don't have power valves or screws. Sent from my SM-N950U using Tapatalk 1 Link to comment Share on other sites More sharing options...
mjotrainbrain Posted April 13, 2019 Share Posted April 13, 2019 Could it be leaky manifolds? Link to comment Share on other sites More sharing options...
colinnwn Posted April 13, 2019 Author Share Posted April 13, 2019 Definitely possible. I had the valve cover gaskets redone 2 months ago to reduce the approx 1 qt a month it was leaking and smelling of burnt oil at stop lights.Immediately after it is now losing 2 qts of oil a month. So they either messed something up, or unluckily an unrelated area let go. When I take it in, I'll mention the knocking and ask if it could be leaking headers. Everything down there is so tight and oily I don't think I could find it if it was leaking. Sent from my SM-N950U using Tapatalk Link to comment Share on other sites More sharing options...
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