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All of the cylinders in an overhead cam engine have low compression. What is the MOST likely cause of this condition?
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L2 Medium/Heavy Vehicle Electronic Diesel Engine Diagnostic Specialist
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L2 Medium/Heavy Vehicle Electronic Diesel Engine Diagnostic SpecialistL2 Medium/Heavy Vehicle Electronic Diesel Engine Diagnostic Specialist

Last Revision - July 2006

The L2 test is engineered to measure a technician’s knowledge of the skills needed to diagnose sophisticated engine performance problems on computer-controlled diesel engines. To register for L2 Test, you must currently be certified in both T2 (Diesel Engines) and T6 (Electronic Systems).

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