A ticking sound from a 5.4 Triton engine after it warms up is often caused by a few common issues. One possibility is the failure of the hydraulic valve lifters, which can lead to insufficient oil pressure and result in lifter noise. Another potential cause is the use of low-quality oil or incorrect viscosity, which can affect lubrication as the engine heats up. Additionally, worn or damaged timing chain components may contribute to the ticking sound as the engine operates.
If its coming from your engine, you may need a valve adjustment..
Is it a lifter ticking?
Most likely it is the exhaust manifold leaking, which is very common on this model with the V6 engine. It is usually most noticable when the engine is cold, and gets better as it warms up.
Often a knock when cold is caused by piston slap, which is pistons rocking in the cylinders until they expand in size when the engine warms up.
That depends on what is ticking, and why. Generally, a minor engine tick that suddenly goes away was caused by a clog in the oil pathways inside the engine that cleared up suddenly. If the engine generally ticks until the engine is warmed up, this suggests a clog in the engine's internal oil pathways that stays there, but as the oil warms and thins it's able to squeeze through enough to stop the engine from ticking.
The ticking sound you are hearing from the rover when it's cold is likely due to the metal components expanding as they warm up. This expansion can cause parts to move slightly, creating the ticking noise. It is a normal phenomenon and should not cause concern as long as the sound goes away once the rover warms up.
Does it quit shaking when it warms up? What engine and year of Aerostar?
The ticking noise in a 1995 Aspire when cold is often due to the lifters or valves not getting enough oil circulation as the engine starts. When the engine warms up, the oil thins and flows more easily, reducing or eliminating the noise. Additionally, it could be related to exhaust leaks or components like the timing belt tensioner. Regular maintenance, including oil changes, can help minimize such noises.
The preheater warms up the engine so it will start easier and in freezing weather will help to avoid freezing of the coolant.
Check for vacuum leaks.
if its a tick not a knock, its probably lifter noise. its not too terrible, once the weather warms up, i would recommend getting some thicker oil, if it fixes it, then im probably right.
A cold engine will often experience trembles due to the inefficiency of engines when not at operating temperatures. This quickly goes away as the engine warms up.