Diagnostic Starting Point - Engine Mechanical; Symptoms - Engine Mechanical Strategy Based Diagnostics; Visual/Physical Inspection; Symptom List - Suzuki XL7 2007 Service Manual

1D-26 Engine Mechanical:
Diagnostic Starting Point - Engine
Mechanical
Begin the system diagnosis by reviewing the
"Disassembled Views", "Engine Component
Description", "Drive Belt System Description",
"Lubrication Description: ". Reviewing the description
and operation information will help you determine the
correct symptom diagnostic procedure when a
malfunction exists. Reviewing the description and
operation information will also help you determine if the
condition described by the customer is normal operation.
Refer to "Symptoms - Engine Mechanical" in order to
identify the correct procedure for diagnosing the system
and where the procedure is located.
Symptoms - Engine Mechanical
Strategy Based Diagnostics
1. Perform a "Diagnostic System Check - Vehicle
Diagnostic Information: " before using the symptom
tables, if applicable.
2. Review the system operations in order to familiarize
yourself with the system functions. Refer to
"Disassembled Views", "Engine Component
Description", "Drive Belt System Description",
"Lubrication Description: ".
All diagnosis on a vehicle should follow a logical
process. Strategy based diagnostics is a uniform
approach for repairing all systems. The diagnostic flow
may always be used in order to resolve a system
problem. The diagnostic flow is the place to start when
repairs are necessary. For a detailed explanation, refer
to "Strategy Based Diagnosis: ".
Diagnostic Information and Procedures

Visual/Physical Inspection

• Inspect for aftermarket devices which could affect the
operation of the Engine. Refer to "Checking
Aftermarket Accessories: ".
• Inspect the easily accessible or visible system
components for obvious damage or conditions which
could cause the symptom.
• Check for the correct oil level, proper oil viscosity, and
correct filter application.
• Verify the exact operating conditions under which the
concern exists. Note factors such as engine RPM,
ambient temperature, engine temperature, amount of
engine warm-up time, and other specifics.
• Compare the engine sounds, if applicable, to a known
good engine and make sure you are not trying to
correct a normal condition.
Intermittent
Test the vehicle under the same conditions that the
customer reported in order to verify the system is
operating properly.

Symptom List

Refer to a symptom diagnostic procedure from the
following list in order to diagnose the symptom:
• "Base Engine Misfire without Internal Engine Noises"
• "Base Engine Misfire with Abnormal Internal Lower
Engine Noises"
• "Base Engine Misfire with Abnormal Valve Train
Noise"
• "Base Engine Misfire with Coolant Consumption"
• "Base Engine Misfire with Excessive Oil
Consumption"
• "Engine Noise on Start-Up, but Only Lasting a Few
Seconds"
• "Upper Engine Noise, Regardless of Engine Speed"
• "Lower Engine Noise, Regardless of Engine Speed"
• "Engine Noise Under Load"
• "Engine Will Not Crank - Crankshaft Will Not Rotate"
• "Engine Compression Test"
• "Oil Consumption Diagnosis: "
• "Oil Pressure Diagnosis and Testing: "
• "Oil Leak Diagnosis: "