what's going on everybody today i want to show you the difference or let you hear the difference
between a bad sounding engine and a good sounding engine engines make lots of different kinds of
noises and there's sensors all over the engine to help the computer compensate for that like your
knock sensors when your cylinder your piston does a spark knock running the wrong type of gasoline
pre-detonation happens the knock sensor is usually located in the valley under the intake
they read all this and then send information back to the computer so the computer can
advance [ __ ] the timing advance [ __ ] i know that probably didn't sound right but
control your air fuel ratio so uh ticking tapping knocking anything like that um
there's different kinds so ticking you probably hear your injectors ticking if you have port
injected or direct injection you have a high pressure fuel pump you'll hear that sometimes
knocking lower end knock usually if it's bad it's going to be with the rpms as it goes up
you push the throttle down the rpms go up the knocking gets louder and louder and louder
and it doesn't go away same thing with the ticking if it's on the top of the
engine like a camshaft or a lifter or a rocker or something like that
as you hit the throttle and the rpms go up it does the same thing it's going to keep
going and going and going now this is a good sounding engine this is my 2018 mustang gt
nothing wrong
you hear your ejectors ticket and all that good stuff
nothing wrong with it normal sounding engine all cars sound different some run way quieter
than others um chevrolet is running really quiet i'm not a big chevrolet person but
even motorcycles do it my suzuki gsxr it has a slipper clutch in it so it's really loud on
the right hand side but that's just the bearings on the backside of the uh slipper clutch because
they they run on a ramp as you wide open throttle it they spread out and allows the clutch to slip
that's something totally different though nothing wrong with that engine but i will
let you hear a bad sounding engine this came out uh while i was at work
it is a 2016 2017 dodge charger with a 3.6 liter and i'll play that for you right now
so the issue with that is can you tell me you think you know what it is
if you guessed camshafts with the hydraulic lifters and the rockers
you you guessed it right hey somebody honking at me so that's what that noise is so what happened
on that engine it's it's bad for the 3.6 is dodge in general has hydraulic lifters in it they get
gummed up jammed up they don't flow oil like they're supposed to so what happens is it sticks
and then the roller is not getting any oil and the camshaft is still spinning over the top of it
and it wears the lobe of the camshaft down and i'll show you a picture of that too
and i painted it in blue so you can actually see where the wear mark was
this is one that wasn't so bad that i pulled out i pulled out some they're all horrible
but uh that's what a bad tick sounds like just sitting there idling you just hear it
ticking and tapping away and then as you get on going down the road it's just gets worse
so the only fix for that is replace the intake and exhaust cams we do both sides
all the lifters and all the rockers put it all back together change the oil on
it send it on its way it's going to do it again chargers are bad for that but again good sound
and again bad sound
but anyway like comment share subscribe send this video out to all your friends and family
so everybody knows the difference between good engine sounds and bad engine sounds
or some that are normal and those that are not normal