ROYAL ENFIELD UCE ENGINE SERVICE MANUAL
141
TROUBLE SHOOTING
It is very important for a competent and successful
technician to be able to diagnose a fault correctly and
first time right.
If the symptom is not diagnosed systematically and
correctly, it will not only result in expensive and time
consuming repairs BUT will end up with an unsatisfied
customer as well. Also the fault will not be rectified,
and will result in repetitive repairs.
In order to accurately troubleshoot and correctly a
fault, the technician should be very thorough with:
Each and every component of the motorcycle, its
function and the effect it has on the overall
performance of the motorcycle.
Typical failures or symptoms that will occur in the
event a component fails or is in the process of
failure
The second most important aspect to be able to
correctly troubleshoot a fault is to understand
the exact nature of failure, conditions under
which the failure occurs etc. Towards this it is very
important to ask meaningful and correct
questions to the rider of the motorcycle about
the circumstances which caused the failure.
For Eg. If a motorcycle comes with a fault of engine
misfiring, the technician should ask the correct
questions to the rider such as
Did the misfiring start immediately after fuel was
refilled?
Did the misfiring occur immediately after the
motorcycle was water washed, used in water
logged area etc.
Was the motorcycle out of use for a prolonged
period of time.
Was the motorcycle attended to by any
unauthorized / inexperienced free lance
technical person/s
This will help analyze and pinpoint the most likely
cause of the misfiring and help in rectifying the fault.
The third most important aspect is a careful and visual
inspection with a “careful eye for detail”, for any telltale
signs of what could have caused the fault and then
narrow down to the assembly/subassembly/
suspected part.
It is also very essential to be able to analyze and
understand the nature of failure as:
Failure due to not adhering to the periodical
maintenance service schedule.
Failure due to improper servicing by an
unauthorized person
Failure due to misuse/abuse of the motorcycle.
Consequential failure (part failed due to
malfunctioning of another part).
New or unique failure (One off in nature)
Premature failure of a part
Finally, a detailed and systematic inspection of the
suspect assembly/subassembly/ part will help rectify
the fault correctly and accurately.
The following table details symptoms, possible cause
and remedy for some of the common faults that arise
in a motorcycle engine. The list is not exhaustive and
intended to be used only as a guide to help trouble
shoot faults.
