Manual Smart M160 / 1– UL- Engine
July 05
Ecofly GmbH page 8
2.4. Fuels / Fuel System
Use only unleaded, min. 95 octane fuel (unleaded Super = standard automotive
fuel). Do not use any fuel additives!
Remarks:
o Leaded fuels damage not only the catalytic converter but also the lambda
sensor! The general rule also for engines not fitted with a catalytic converter
is therefore: do not use leaded fuel!
o In case only Normal unleaded fuel is available, it can be used in exceptional
cases provided maximum power is reduced to 80% (the knock control
system automatically adjusts the ignition angle, minimising the risk of
engine damage).
o Recommended optionally:
o Unleaded Super – Plus (RON 98); at very high ambient
temperatures and limited cooling of charge air, this fuel grade might
even result in slightly higher performance.
o We also recommend sulphur-free fuels such as Shell Optimax
(RON 99) (very environment-friendly and extremely knock-resistant)
o All other fuels, even aviation-grade fuels will cause irreparable damage to
the engine sooner or later!
o Injection valves are susceptible to clogging due to fuel impurities, so use
only filtered fuel and check/replace fuel filter at regular intervals.
o A noisy fuel pump may be indicative of a clogged fuel filter: replace fuel
filter!
o Take special care when working with or checking the fuel system.
o Guide all fuel lines away from heat sources so as to protect them from
thermal fatigue. Insulate fuel lines against heat where necessary.
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