This has happen on several occasions where i would start the car, and the engine would start to crank and i hear some metal hitting. But the car starts fine, no problems at all, its just sometimes it makes that soudn which doesnt sound healthy. Its hard to explain, but its loud enough that i can hear it in the car.
What about them? They make a ticking sound that some have likened to diesel clatter.
Metal on metal noise during cranking (as opposed to once the engine is running) sounds like a problem with the starter. Doesn't sound normal; I'd bring it to the dealer.
I had that sound also when my car was only about 6 months old. But now that I have over 10K miles on it, I don't hear that sound anymore. May be yours will go away too. I brought the car into the dealership to check it out but they cant dulpicate the problem.
I had that sound also when my car was only about 6 months old. But now that I have over 10K miles on it, I don't hear that sound anymore. May be yours will go away too. I brought the car into the dealership to check it out but they cant dulpicate the problem.
You know actually same thing here. I haven't heard the sound in a long time either and seemed to have stopped after around 12,000 miles. I'm at 14900 right now. When I used to hear the sound it was rare, but was def there once in a while on first start up of the day. BTW Mobile 1 10w30 synthetic has been in my car since it's first oil change.
This has happen on several occasions where i would start the car, and the engine would start to crank and i hear some metal hitting. But the car starts fine, no problems at all, its just sometimes it makes that soudn which doesnt sound healthy. Its hard to explain, but its loud enough that i can hear it in the car.
Anyone else experience this?
dude, i think i have the same exact sound as you. i made a post about it on www.my.is
almost every morning when i first start the car, right after it starts, the engine makes this really bad sound like a grinding/crackling type sound. it sounds really bad. my dad heard it and said it could be the starter, but if it was the starter, wouldnt it make the noise WHILE the car is starting and not after?
it sometimes does this sound as well after the car has been sitting or a while.
dude, i think i have the same exact sound as you. i made a post about it on www.my.is
almost every morning when i first start the car, right after it starts, the engine makes this really bad sound like a grinding/crackling type sound. it sounds really bad. my dad heard it and said it could be the starter, but if it was the starter, wouldnt it make the noise WHILE the car is starting and not after?
it sometimes does this sound as well after the car has been sitting or a while.
Sounds like the catalytic converter heating up.........normal condition
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2006 IS250, Tungsten Pearl, 18 inch rims (Bridgestone RE050), Nav, PIAA Xtreme White Bulbs, Passport 8500, pretty much the works...
2010 VW Jetta Diesel, DSGearbox (Dual Clutch)
Past rides:
2002 Mercedes C-230 Kompressor
1997 VW GTI VR6
I come from the motorcycle world, and with what you guys are describing, it sounds like a hydraulic cam-chain tensioner. I don't even know if this car has a hydraulic tensioner, but more than likely it does.
Often time with hydraulic tensioners, the oil will seep out of the tensioner and it takes a few seconds to pump back up after starting. No harm at all to anything, it's just a little noisey for a few seconds.
I have a new Kawasaki ZX14 with a hydraulic tensioner and it makes a racket for about 1 second after start-up, then it's as quiet as a church mouse.
I come from the motorcycle world, and with what you guys are describing, it sounds like a hydraulic cam-chain tensioner. I don't even know if this car has a hydraulic tensioner, but more than likely it does.
Often time with hydraulic tensioners, the oil will seep out of the tensioner and it takes a few seconds to pump back up after starting. No harm at all to anything, it's just a little noisey for a few seconds.
I have a new Kawasaki ZX14 with a hydraulic tensioner and it makes a racket for about 1 second after start-up, then it's as quiet as a church mouse.
It's not hydraulic, it's a spring loaded rachet mechanism. There is no shortage of chains whipping around in there, but they've got slippers and dampers enough for a couple of bikes easy. If its the cam chains, there's something wrong. I'm still betting on the lifters sinking slightly and clattering until oil gets to the top end. Especially when the guy is running 10w instead of the recommended 5w.
Oh yeah, I'm very familiar with bikes and cam chain tensioning schemes for all kinds of cam chains. This engine has single row rollers with one long stretch across the two heads and two short ones between the cams in each head.
Most performance mods need a watch and timed course to demonstrate actual improvement. Few deliver the advertised claims. Many are actually worse than stock. The best performance mods are made to the driver.
Emotional arguments - They're not just for chicks anymore.
It's not hydraulic, it's a spring loaded rachet mechanism. There is no shortage of chains whipping around in there, but they've got slippers and dampers enough for a couple of bikes easy. If its the cam chains, there's something wrong. I'm still betting on the lifters sinking slightly and clattering until oil gets to the top end. Especially when the guy is running 10w instead of the recommended 5w.
Oh yeah, I'm very familiar with bikes and cam chain tensioning schemes for all kinds of cam chains. This engine has single row rollers with one long stretch across the two heads and two short ones between the cams in each head.
I got you...I bet you're right then about the lifters. I'm suprised this motor doesn't have a hydraulic tensioner, but hey, I suppose Toyota knows best.
So this motor has three chains? One main from the crank to each bank, then one smaller chain in each head to operate the cams? Then the intake cams are hydraulicly timed right, but the exhaust cam timing does not alter? I'd like to see the parts diagrams of this motors, you know of any place online that has it? No particlular reason other than being a gearhead and being pretty much amazed at much how power this motor makes.
It's not hydraulic, it's a spring loaded rachet mechanism. There is no shortage of chains whipping around in there, but they've got slippers and dampers enough for a couple of bikes easy. If its the cam chains, there's something wrong. I'm still betting on the lifters sinking slightly and clattering until oil gets to the top end. Especially when the guy is running 10w instead of the recommended 5w.
When did the recommended oil change from 10w30 to 5w30? Right on top of my oil cap and in the manual it says to use 10w30 for getting the most efficiency out of the engine.
It's not hydraulic, it's a spring loaded rachet mechanism. There is no shortage of chains whipping around in there, but they've got slippers and dampers enough for a couple of bikes easy. If its the cam chains, there's something wrong. I'm still betting on the lifters sinking slightly and clattering until oil gets to the top end. Especially when the guy is running 10w instead of the recommended 5w.
Oh yeah, I'm very familiar with bikes and cam chain tensioning schemes for all kinds of cam chains. This engine has single row rollers with one long stretch across the two heads and two short ones between the cams in each head.
I know I said this, but I've since discovered I didn't read all the text. Shame on me. The tensioners are hybrid spring and oil pressure operated per the drawing below.
Most performance mods need a watch and timed course to demonstrate actual improvement. Few deliver the advertised claims. Many are actually worse than stock. The best performance mods are made to the driver.
Emotional arguments - They're not just for chicks anymore.
Most performance mods need a watch and timed course to demonstrate actual improvement. Few deliver the advertised claims. Many are actually worse than stock. The best performance mods are made to the driver.
Emotional arguments - They're not just for chicks anymore.
Engine cranking/startup noise (merged threads)
Hybrid Mode
