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Typically vehicles that use hydraulic lifters & have more miles on them, tend to have a tapping sound until the engine is "warmed up." The hydraulic valve train is designed to eliminate the gap at all operating temperatures, though overtime the lifters wear out and don't fill with oil as quickly resulting in the tapping sound you hear until the engine has warmed up, and the lifters have been properly filled and lubricated.
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What causes 1999 suburu legacy to knock-click during idle?
Sometimes the Timing belt tensioner will cause a tap or click until the engine is warm.
What causes an engine to knock when warm?
Could be that your valves are out of adjustment or if you have the nonadjustable valves then it could be a build up of carbon on the valves.
Why would a 96 gmc sierra stall and run rough until the engine is warm?
It stalls even when warm
How do you know if your thermostat is bad on your Chevy Express?
The engine will:Not warm up at all, This should set a code on the computerWill warm up very slowly, This should set a codeWill only warm up to a lower temperature than it should, this may not set a codeThe engine may warm up properly but continue to warm up until it overheatsThe engine may warm up until it is either at the correct temperature or too hot then cool down until it is too cold and repeat the cycle.All of these are symptoms of a bad thermostat.
What does it mean to knock up in tennis?
knock up Verb1. Also: (knock together) Informal to make or assemble quickly: my boyfriend can knock up a wonderful lasagne2. Brit informal to waken: to knock someone up early3. Slang to make pregnant4. to practise before a game of tennis, squash, or badmintonNounknock-upa practice session at tennis, squash, or badminton
Why does your 350 Chevy engine knock when cold start?
Your engine knocks when you cold start it because the motor oil is not viscous enough to lubricate crank bearings, cylinders, etc. warm it up first, engine will last alot longer
What is 2000 Malibu engine noise?
if your talking about a v6 noise on start up. most all 3.1 make this noise until engine gets warm. if the noise does not go away when warmed up. better check it out !
What is a bearing knock?
A bearing knock, or a rod knock develops when the bearings between the rod and crankshaft wear, leaving a gap, allowing the crankshaft to slap the connecting rod. The knock develops slow for a few miles but once the rod starts to knock then the gap increases because the metal in the rod and the crankshaft get destroyed and deteriorated. As the gap increases the knock gets worse, and as the gap increases the knock and the damage will rapidly get worse. Within a short while the connecting rod will break open and get stuck between the crank and the engine block, possibly cracking the block and destroying the crankshaft. The engine is now inoperable :< To prevent the rod knock, let your engine warm for a minute or so before driving to ensure the engine oil has been pumped throughout the engine, and get regular oil changes, because a thin film of oil is all that separates these engine parts, and dirty oil will be squeezed between the metal parts, increasing the rate of erosion. .
Why does my V40 dci knock when started from cold and goes when engine is warm?
Diesel engines relies on heat generated by compression to ignite the fuel. When the engine is newly started the air the gets compressed also gets a little cooled by the still-cold engine block, so the ignition is a little delayed and the engine runs rougher. With a warm engine the the compressed air gets a bit warmer, so the engine fires easier and runs smoother.
Why is your heater blowing out cold air when your engines temp is warm?
I had the same problem with mine. It was the thermostat, it was sticking and would not open until the engine got very warm and would force the thermostat to pop open, then the car would fill with warm air until the engine got back within operating temps or cooler, then it would stick shut again.
What does a idle control valve do when engine warm up?
yes they do because to make it work it has to be running
Will burning regular gasoline in a 3800 series ii supercharged engine cause the check engine soon light to go on?
Yes it will cause your engine to detinate or knock, especially in warm conditions Higher octane gas has a higher flash point, it won't explode from heat and pressure as lower grades can.
