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Sounds like pre-ignition or "pinging", meaning the timing may be over-advanced. If it's an older, carburetta model, it may help to use an octane boost additive in the fuel, because older carby engines tend to ping on unleaded fuel. Another possiblity could be a cracked flex plate (flywheel) only if it is an automatic transmission.
What else can I help you with?
What would cause a tapping noise in a car engine in a Nissan Maxima?
loose exhaust
What does it mean when your truck is tapping when you hit the gas?
You may have an exhaust leak very close to the engine.
What is the cause of blue smoke from the exhaust of a diesel while driving?
Blue smoke is caused by engine oil being burnt by the engine.
Why does your truck sometimes make a ticking sound?
It can be a hole in your exhaust system or it can have something to do with your engine.
Why does white smoke come out exhaust on 84 Chevy pickup over heat?
White smoke out the exhaust is definitely a sign of a cracked cylinder head or a blown head gasket, possibly even a cracked engine block. Not something to be driving around with, as more damage can occur from overheating the engine. Also the engine could stop running and strand you someplace you may not want to be stranded in.
Why is your peguet 406 making a loud tapping sound from the engine?
The loud tapping sound can be caused by a complete heating of the engine. Worn tappets can also cause the tapping sound.
Deadly amounts of carbon monoxide can be released from which of the following?
inboard gas engine exhaust
Will an exhaust leak make my check engine light come on?
Possibly. What an exhaust leak will do is KILL you. Either from the Carbon Monoxide you inhale while driving or the wreck you are going to have when it puts you to sleep. Get the exhaust leak fixed ASAP.
What is making a tapping sound when the 2002 Buick engine is cold?
Not to worry it is the valves in the engine tapping because there is not enough oil pressure yet for the fluid lifters to take up the slack in the valve train, that is why it goes away after a few minutes and also why you should always let your engine warm up before driving. a rod nock
What would cause the car to smoke after driving it up onto a curb?
If you nicked the oil pan it could cause it to smoke from engine area. Is the smoke coming from the exhaust or engine bay? If exhaust, then I highly doubt it was caused by the curb incident.
What would cause a constant very loud tapping or knocking noise in a Chevy 350 engine that does not blow smoke or leak oil and seems to still run good.?
Check operation of exhaust "heat riser" valve. Also check exhaust header gasket for leaks. Heat riser should be near the exhaust header, in exhaust pipe connection.
Where does the exhaust system connect on an engine?
exhaust pipe connects to the exhaust manifold, which connects to the main engine.
