knocking noise from the engine bottom
 

i recently bought my svx
and i just realized this knocking noise
at high RPMs you can't hear it from the inside but in idle (600rpm) you can even feel it on the brake pedal
the noise can easily be heard from under the car (front)
it becomes faster at higher RPMs...didn't go away even at 3000
as i said i recently bought it so i don't know what gas octane rating she's been using or what kind of engine oil it has
but it has done only 200 miles in the last 8 months
i took a video of it but when i play it back, i can't even hear the noise!!! weird
should i change the oil and other stuff or do i need to take her to a mechanic?

Re: knocking noise from the engine bottom
 

Could be the engine? Or it could also be the flex plate between the engine and tourque converter.

Re: knocking noise from the engine bottom
 

Could also be a loose crankshaft pulley.

Harvey.

Re: knocking noise from the engine bottom
 

it goes away when i move
and when i put pressure on the steering wheel(turn it hard and fast)
there is one other squealing knock from the timing belt area
and this other metallic like knock when i idle it at higher speeds
too much to handle myself...i'm gonna take her to a mechanic

Re: knocking noise from the engine bottom
 

It could also be a hydraulic lifter. Try to feel on each side of the engine.
If this is it, it needs more thicker oil or a new lifter.

Are there oil in the servo pump? Is the steering wheel pumping?

Re: knocking noise from the engine bottom
 

so in order to keep the forum a little less crowded, i post here:P

the engine is causing me lots of problems and it's getting worse every day

1:trouble starting it up...the starter sounds real good but it doesn't fire up in less than 4 seconds...even when i press the pedal all the way, doesn't do much and when it finally starts it makes lots of smoke...looks like water vapor but smells kinda like burnt oil&water vapor

2:want to change the timing belt next weekend(finally!)...any last min tips? good belt brand?!

3:there is this new ZZZ ZZZ ZZZ sound from the engine (totally audible from the exhaust) I'll post a vid of that tomorrow

4:i took the knock noise to a mechanic friend of mine...he said it's from the exhaust and nothing serious! trust or recheck?

5:warm air is coming down my feet...AC is off obviously!

other than the engine, everything is working and i'm actually very pleased with the transmission! which is odd!:D

but i was thinking that all these problems happened in the first 200 miles i drove it!!! am i doing something wrong?!:eek::confused:

i could use every single advice on all of those so don't hesitate:P

Re: knocking noise from the engine bottom
 

nobody?!:confused::(

Re: knocking noise from the engine bottom
 

I have the aarm air thing by my feet too I just figured it was from the vents

I have an intermitten lifter tick...it sounds like it is comkng from the back of the engine when you are outside the car but when u pop the hood and really listen it is coming from the cylinder heads...does it happen all the time? Or does it go away sometimes? Mine goes away when it gets hot and some days it just doesnt happen

Re: knocking noise from the engine bottom
 

the knock just happens when the engine makes a special amount of power...when it's stopped in drive with my foot on the brake, or when i idle it at ~1000 (on neutral)

the zzz zzz zzz seems to be coming from under the car...around the tranny
can't hear it over the engine when the hood is open
and yes it goes away when it gets warm...
i got a more precise look at it all...many of the problems and bad sounds only happen when it's cold

and i realized when i turn it on, it just accidentally turns the radiator on(it's cold but turns it on and shuts it off right after) sometimes the check engine lights up right at the moment the fan kicks in
but when it warms up, no check engine, starts easy and normal...no zzz zzz zzz

i also found that my front right brake disk is warped!:D the price for all the repairs will be big:P

Re: knocking noise from the engine bottom
 

That stinks man lol it seems you either get lucky with these cars or you don't

Idk what the zzz zzz zzz is ive never had that one...im pretty sure the heat shields on my exhaust near the front are vibrating cus they are loose but when they are hot it goes away

Re: knocking noise from the engine bottom
 

actually i got pretty lucky...i bought it for 1400, with new tires, recently rebuilt tranny and body is in good shape and no crashes
so i mean it's all just the around engine and as far as i can tell none of them seem to be coming from the engine itself
yeah that may be it
thanks buddy

Re: knocking noise from the engine bottom
 

Wow better deal than I got...i paid 2500 for mine and a week later the alternator went! lol then i needed tires...can you say $800 :p

Re: knocking noise from the engine bottom
 

why don't you guys help me?:( is it too complicated the problems i have? or you're just tired of me!:(

Re: knocking noise from the engine bottom
 

What other help do u need :confused:

Re: knocking noise from the engine bottom
 

the most serious is the not starting up....