I've noticed occasionally on cold start the combustion engine has a terrible vibration and knocking that occurs for the first 1-2 seconds of ignition. I have about 68k on it, mostly 30 mile freeway commutes. 2011 Nissan Maxima 5,500 mi, derrick611. Perhaps there is an imbalance in the air to fuel mixture, resulting in the gas burning unevenly. Still others compare the engine knocking sound they hear to marbles rolling around inside a coffee can. brand new 19 raptor only 700 miles on it. Report. the knocking sound seems to be more persistent when the engine is hot. However, there are situations where the engine makes a strange ticking noise when it is idle and accelerating. If it does, it is probably something like an exhaust leak which closes itself as the engine manifolds get warm. It almost sounds like a little diesel jetta engine at idle. 2500 km on it. It will not go away as the engine gets warmer. Just wondering if it's normal or if the clutch needs to be checked. Absolutely love the ride so far, except for one annoying issue...engine noise. When the bearing has been annihilated – which doesn’t take very long – the bearing welds itself to the crankshaft and the connecting rod flops around the crankshaft. High octane fuels burn more uniformly and resist knock. Knocking is not that loud, it's intermittent, not rythmic with the engine and noticable. It has a slight knocking sound at idle when warm. Knocking/tapping sound at idle? It is NOT correlated with engine speed, that is, if I slightly rev the engine in neutral the knock does NOT increase in frequency. I have read that these engines can make some noise that is considered normal. the knocking is coming from the drivers side front of the engine right were the 2 tvv solenoids sit. I have a 2016 Scout with about 700 miles on it. Normally, the engine will barely make any sounds as it runs. After warming up my car has developed a tapping noise at idle seemingly in the bottom end of the motor. The noise goes away when I block the … the knock is easily noticeable from the drivers side of the vehicle. This can also be caused by the engine overheating. If you're hearing engine noise like engine knocking or engine tapping, it can indicate that the vehicle is running low on oil. I'm now 2 months into ownership with my new 2017 Highlander Limited. I do run 93 octane fuel in it so it shouldn't be a detonation noise. I have a 09, Limited, that has a distinct engine knock sound at idle. My old Mazda 2 sounded perfect. The longer it sits the louder the noise gets to … When you start the engine and you hear the sound, does it sound better after the vehicle is warmed up? That annoying engine knocking sound evolves into a clatter as the bearing surface erodes more and more. the amount of knocking follows an increase in engine rpm. It is faint, but audible, only at idle with radio off and it is not valve noise or injector clack. ENGINE KNOCKING. Have a 2003 trailblazer with the 4.2 L straight 6. It seems to be coming from somewhere in the rear of the engine but I can't pinpoint where or what it is. Nissan Maxima Engine knock noise at idle - 24 reports. Learn about this problem, why it occurs, and how to fix it. 2. Start the engine, and let it reach normal operating temperature. It's non ebs. Seems to be louder when it's cold outside and atv is warmed up. Then, Most likely you’re probably experiencing spark knock. I guess I got accustomed to Chev's previous super quiet engines from the past (2012 sonic, 2007 g5, 2002 cavalier) so this one stood out to me. The causes of engine knocking sound may range from bad fuel, faulty spark plugs, or even dirty combustion chamber. Knocking noise that happens when it starts up and fades from tome to time . What happens is when the truck is at normal temperature and it idles for about 5 minutes it makes this knocking sound that can be heard on the drivers side of the engine. The noise isn't constant, it's intermittent with no real pattern to it. Tl-the contact owns a 2016 Ford F-150. If you have an older motorcycle and notice a knocking sound coming from the lower half of the engine, this could your culprit. If an engine’s knocking, it may be a result of bad oil, which if ignored for too long, can result in worn out rod bearings. With the engine at idle, increase engine speed to about 2000. It can also mean that an engine part, such as a valve is wearing out. Hey guys. Nissan Maxima Engine knock noise at idle - 24 reports. this occurs every day. A whistling noise can indicate a cam shaft belt is misaligned or there is … 1. So they basically said it's just the sound of the engine. Q: My engine is vibrating and making a knocking sound at idle, which grows intensely when I accelerate but it all goes away at times The best way to describe car engine knocking is an annoying pinging sound which comes from the engine area. 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Also be caused by the engine heats up love the ride so far, except for one annoying issue engine! Start to get a pretty loud likely you ’ re probably experiencing spark.... Half of crankshaft speed to a whining pump motor even a little bit the noise is happening 800.