Knocking noise when started but high rpm make noise go away

Hi,

One might need to oil up some of the internal parts of the dryer that are not electronic. It sounds like there might be friction causing the nocking sound. After the oiling of metal portions of the dryer, the sound should go away.

Thank you.

OK let's do a little check. with the car in a clear area and no kid's or anyone around the car get in and start the engine.Now do you hear the noise with the car sitting at an idle.Let's say yes then put your foot on the brake and put the car in gear do you hear the knock if so hold the brake secure make sure no one is in front of the car and apply the gas lightly if the noise stop's then you have a loose torque converter to flywheel the bolt's are not tight..Now if you hear the knock and it's high pitch metallic then chance's are it's a rod or lifter in the engine.If the noise is a thumping dull noise you have a bad crankshaft.My guess is the torque converter because you said the transmission was worked on and a lot of time's without Loctite and the proper tourque the converter bolt's will work loose.GOOD LUCK HOPE THIS HELP'S

Ur push rods are either needs to adjust or to replace.....

better bring that to ur mechanic and adjust first the the valves, if that is ur connecting rod, the sound would be heard even louder in high rpm.

If you're getting ticking-type knock, I'd first look to the lifters. if it's a real hard knocking, it could be your main bearings on the lower end

Could be a starter sticking but that would cause more of a grinding noise, my best guess is that your flex-plate(flywheel) is broken if the noise is coming from between the engine and transmission. Remove the access cover for the bell housing and take a look at the flex-plate.

YES IT IS IN THE VAVLE TRAIN COMIN IN MOST VW THE TIMING CHAIN ADJUSTER GOS BAD MOST OF THE TIME FROM LACK OF OILCHANGES AND OR CHEAP OILS ANY WAY NEED TO REPLACE GO TO REPAIR SHOP VERY HIGH TECH JOB

check your timing chain or belt might be loose and or your belt tensioner is not working

This may also be a warped flywheel.

You could have fuel with to low of octane rating.

It sounds like you may have some sludge in your oil. When the engine is cold the oil is thicker and takes a while for the oil pump to pump it through the engine. The next time you change the oil. Do an engine oil flush first to clean the inside of the engine and ports. If this does not work you might have to have the oil pump checked. There is no need to worry as long as you have oil pressure and the knocking stops. I hope this helps. Don't forget to rate this answer.