Fuel; Servicing Your Honda (Cont'd); Fuel Recommendation - Honda CB250 Nighthawk Owner's Manual
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Also See for CB250 Nighthawk:
- Shop manual (220 pages) ,
- Owner's manual (88 pages) ,
- Owner's manual (87 pages)
Table of Contents
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Refer to
Saf ety Precautions
Fuel Recommendation
type
pump octane
number
We recommend that you use unleaded fuel
because it produces fewer engine deposits
and extends the life of exhaust system
components.
Your engine is designed to use any
gasoline that has a pump octane number of
86 or higher. Gasoline pumps at service
stations normally display the pump octane
number. For information on the use of
oxygenated fuels, see page
on page
54
.
unleaded
86 (or higher)
182
.
Use of lower octane gasoline can cause
persistent ''pinging'' or ''spark knock'' (a
loud rapping noise) which, if severe, can
lead to engine damage. Light pinging
experienced while operating under a heavy
load, such as climbing a hill, is no cause
for concern.
If pinging or spark knock occurs at a
steady engine speed under normal load,
change brands of gasoline. If pinging or
spark knock persists, consult your Honda
dealer.
Servicing Your Honda
Fuel
73
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- Engine Oil
- Oil Recommendation
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Questions and answers
Two of my turn signals were broken and hanging down but worked. I bought new turn signals that were led and replaced them. Understand now can't do that. I bought regular signal lights and a new turn signal relay. Still don't work??????
Possible reasons why the new turn signal lights and relay are not working on your Honda CB250 Nighthawk:
1. Flasher Relay Issue – The new Tridon flasher relay may be faulty or not compatible with the bike’s electrical system.
2. RPM-Related Voltage Fluctuation – The turn signals stop flashing above 4,000 RPM, which could indicate an issue with voltage regulation or wiring.
3. Wiring Problems – A damaged or loose connection in the wiring may be affecting signal operation.
4. Battery or Charging System Issues – If the battery or charging system is not providing stable voltage, the relay may not function properly.
5. Electrical Load Capacity – Installing aftermarket electrical components that exceed the bike’s electrical system capacity can cause failures.
6. Grounding Issue – Poor grounding can prevent the turn signals from functioning correctly.
To fix the issue, check the relay, wiring connections, battery voltage, and grounding points. If necessary, test the system with a stock relay to see if the problem persists.
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