(NCT) Manual 2010 - Road Safety Authority

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NATIONAL CAR TEST (NCT) MANUAL 2010
FUEL SYSTEM
Method of Testing
ITEM
Fuel Tank, Fuel Filter Systems
and Fuel Lines
Throttle Control
Excess Fuel Device
Engine Stop Control (on diesel engine
vehicles)
Air Filter Assembly
REASONS FOR FAILURE
1 Incorrectly or loosely mounted or damaged.
2 Advanced rust in fuel tank (see page 58).
3 Leaks.
4 Unsuitable fuel tank.
5 LPG/CNG tank fitted inside vehicle without being
sub- compartmented or without having valves piped to the outside.
6 LPG/CNG venting or ducting pipes damaged or blocked.
7 Sub-compartment obviously not gas tight where
valves are not piped to the outside.
8 Fuel tank fitted to roof.
9 Manual or solenoid valves not operating.
10 Possibility of fuel lines being crushed, chafed, ruptured or subject
to excessive vibration.
11 No fuel cap or fuel cap seal damaged or missing.
12 Sticking, binding or excessively worn.
13 Link pins, retaining devices or safety devices missing.
14 Cracked or fractured mounting bracket or panel.
15 Gives off excessive smoke if operated from within
the cab after the engine has been started.
16 Not working or missing.
17 Air filter assembly insecure, missing or incomplete.
Note: If a vehicle is presented with a Nitrous Oxide (NO 2 ) injection
system fitted, it should be failed under Reason For Failure (4) above.
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