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ALEX10 ALEX10
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2 years ago
An engine receives good results from a compression test and a cylinder leakage test but poor results from a cylinder power balance test. What engine problem may be indicated by these results?

▸ Burnt intake valve

▸ Worn cam lobes

▸ Defective lifter

▸ Worn piston rings
Textbook 
Automotive Technology: A Systems Approach

Automotive Technology: A Systems Approach


Edition: 4th
Author:
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soniazhaisoniazhai
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2 years ago
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Defective lifter


Excerpt
Lifters, also known as hydraulic lifters or tappets, play a crucial role in controlling valve operation. If a lifter malfunctions, it can lead to irregular valve operation, causing a power imbalance in the engine's cylinders. This imbalance can result from a lifter not properly adjusting to maintain the correct valve clearance, which affects the cylinder's compression and combustion efficiency. Furthermore, defective lifters can lead to excessive valve lash or valve float, both of which contribute to decreased engine performance. Therefore, in the context of a cylinder power balance test showing poor results, a defective lifter is a compelling possibility that should be investigated as a potential issue impacting the engine's performance and balance.
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wrote...
#2
8 months ago
thanks for your help
Anonymous
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#3
2 weeks ago
Help! The answer is missing an explanation...
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#4
2 weeks ago
Quote from: Anonymous (2 weeks ago)
Help! The answer is missing an explanation...

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