Symptoms of a Bad Acura Integra Valve Lifter
When the engine is running, the camshaft rotates to apply lateral pressure on the valves in order to open and close them. This lateral pressure causes the valve to buckle. The job of the Acura Integra valve lifter is to prevent the valve from buckling by transferring the vertical load to the cylinder head. And although the valve lifter is made of sturdy steel alloys, it can still wear out over time, causing imprecise opening and closing of the valve. Aside from this, a faulty valve filter may also cause the rocker arm, valve tip, and push rod to go bad prematurely. That's why it is important to know the symptoms of a bad valve lifter. Here are the most common ones:
Clicking engine noises
The most common symptom of a bad valve lifter is a clicking or ticking noise. You will be able to hear it while you warm up your engine. This can be caused by a number of things, but the main culprit for this is a clogged head and camshaft, especially during times of freezing temperatures. Low temperatures break down the viscosity of the oil and make it lose its lubricating property. Because of this, the oil thickens and it finds difficulty in reaching the valve lifter, which is located at one of the highest points of the engine. Hence, the clicking sound is produced.
There are other causes for this symptom, namely, too much carbon deposit that causes abnormal stickiness, excessive leak down rate, leaky check valve seat, improper adjustment, or a piece of dirt stuck between the ball seat and the check valve ball.
Clacking engine noises
When you hear a harsh clacking sound during the whole time that you have your engine running regardless of the weather, your Acura Integra valve lifter may already be excessively worn. Other things you may notice with the clacking noise would be a rhythmic miss or stumble in the engine and white-gray or even black smoke coming out from the exhaust. When you see all these together, the lifter has collapsed and it can no longer open and close the valve.