Check the tailpipe for contact with the body. A loose hanger that holds the exhaust up may be sagging. The movement of the motor starting will jar the exhaust system.
A seized gear can cause a knocking sound on a 1987 Nissan 5 speed transmission. A blown gasket can also cause this sound.
AnswerNoises have to be heard to correctly diagnoise. TAke it to a garage. But a good place to look for a noise when the driveline is under torque ( accel and turning) would be the CV axles.
A other small child
Most likely it's a CV joint.
have you tried higher octane fuel?
cv joint
Mine was making a knocking sound and I filled it up with premium gas. Sounds crazy but it actually stopped the valves from chattering. Might try it on your next fill up. 93 Octane.
you might need an alternator belt
That sounds like a broken or loose strut assembly.
it all depends on the loudness and where the sound is coming from, it can range from a loose bolt to bad connecting rod bearings
A knocking sound while your car is moving is probably coming from the engine. A certified mechanic will be able to perform diagnostic testing.
My 2000 Grand Prix would have a low-speed knocking noise coming from the drivers side as the CV axle was failing. The loss of lubrication in the CV Boots allows the joint to make a knocking/tapping sound at a low speed. If the knocking is coming from the engine compartment, then it could be an entirely different problem.