if only doing while going up hill ( motor underload *) then is mostly likely "premature spark knock" caused commonly by the engine timing being " fast " basicaly the sparkplug fires before the piston reaches top of its cycle. though it is not uncommon especially in high-compression engines to be a direct result of low-octane fuel. Try running a higher grade of fuel. if that don't stop it then take a look at engine timing
The valves keep blood flowing in one direction. And there are even valves in the veins. The system is called a circulatory system and the system must keep going in a circle to function properly.
Valves. There are four in the heart and the rest of the valves are dispersed throughout the body. They function as muscles around the blood vessel contract to move the blood.
Chordae tendineae - attached to the valves between both atria and ventricles... these structures are attached to papillary muscles in the bottom of the ventricles. these contract when the valves contract, this keeps the blood from going back up into the atria.
veins have valves. y
Valves prevent blood from going backward.Valves in general open to allow or close to prevent liquid flow. Heart valves opens to let blood into the heart then close to keep it there so that when the heart muscle contracts and squeezes the blood it is then forced out into the arteries of the body.
Is your oil level?
No the can go faster downhill or uphill
downshift
Zoanne Clack's birth name is Zoanne A. Clack.
If you define a clack valve as an automatic valve that allows flow in one direction but prevents it in the opposite direction, then yes, in lots of places (see the related question). For starters how about: * check valves in A/C compressor * check valves in diaphragm-type fuel pump * carburetor accelerator pump valves * vacuum retention valve on brake booster * check valve in brake master cylinder * usually several in the automatic transmission valve body * exhaust flapper on diesel truck (ok, that one's a stretch) * and probably others....
Jim Clack's birth name is James Thomas Clack.
Tom Clack's birth name is Thomas Courtenay Clack.
Boom, Boom, Boom, Boom, or Clack, Clack, Clack, Clack
noo
gravity!
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Gravity.