When car is started it makes a tapping or knocking sound. when i hit the gas to accelerate it becomes louder and when i let off to slow down the noise stops. when the car is in drive and at an idle speed it has hesitation or lose of power. seems to want to cut off almost. checked oil levels and they are appropriate. what is going on with the car?
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Re: tapping sound on top of motor
Hi there the problem your experiencing is either a rocker arm came loose or a valve spring broke. which is causing the valve not to open thus giving you hesitation just pull the valve cover off and cranck up the engine and youll see the problem right away now if it is a loose rocker arm you can just tighten it up but if it is a broke valve spring (which i think it is ) it probably best to have a mechanic do it simply because when you take the retainer clips out the valve can be dropped into the cylinder and if that happens the head has to come off now if you want to do it yourself just write me back and ill give step by step instructions
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SOUND'S LIKE YOU COULD HAVE A BAD ROD OR CRANK OR LIFTER.TRY THIS CHECK YOUR WATER AND OIL NOW START THE ENGINE IF IT IS A FAST KNOCKING HOLD YOUR FOOT ON THE BRAKE AND PUT THE CARE IN GEAR IF IT QUEITS YOU HAVE BAD ROD SERIOUS MOTOR REPAIR INTERNAL.DO THE SAME THING AGAIN AND IF IT IS MORE A THUMPING NOISE AND A SLOW DEEP KNOCK THEN WITH THE ENGINE IDLEING PUT IT IN GEAR HOLD THE BRAKE GIVE IT A LITTLE GAS AND IF THE MOTOR KNOCK'S GET'S QUEIT IT'S POSSIBLY THE CRANKSHAFT ANOTHER INTERNAL PROBLEM MOTOR OVERHAUL IF IT'S A FAST RATTLING IT'S PROBABLY A LIFTER STUCK OR BLEED DOWN DIRTY OIL OR A WEAK OIL PUMP ALL ARE BAD NEWS SORRY.GOOD LUCK
It's a common problem with these cars i am actually fixing mine as of now. That car is all about oil pressure and when it is low you'll start to get a tap and or what sounds like a knock due to the lifters not having enough pressure. Try taking your oil pan off and check your oil pick up line going from the oil pan to the turbo. A lot of times it gets a lot of sludge build up and makes the pressure little to none. If that looks clear check the slump inside the oil pan and see if that has sludge build up. Well hope this helped
hi you have a worn camshaft it always makes noise when worn the tapping sounds louder when you accelerate.its important to have regular oil changes as the oil ways can become blocked and lead to this type of trouble if oil changes are over looked.also check for worn big end bearings that connect the pistons to the crank shaft.