M:\Product Information\366-348\Instructions\366-348 MGB Fuel Injection Installation Instructions_Grant_2.doc
Installation Part 25 – Starting the Engine
We are going to start the engine, which we need to do before we can top up the coolant. Before we turn
the key, it is important to understand how the system works and what may happen when we try and start
the engine.
Every time you turn the key ON
, a small amount of fuel is injected to help startup. We have
turned the key on at least once when we checked the operation of the fuel pump and for fuel leaks. SO,
the engine may already be loaded up with fuel, especially if the key was turned to the ON position several
times. This means that the engine may run roughly at first. If so, rev the engine for a few seconds to pull
the excess fuel charge through. In an extreme case, the engine may be flooded. If the engine is flooded,
hold the throttle to the floor and start the engine. The throttle position sensor will recognize full throttle at
start up and the ECU will temporarily stop injecting fuel.
311.
Start the engine and run it for about 30 seconds.
If the engine does not start, review the
paragraph above and the troubleshooting section at the end of these instructions.
312.
With the engine idling, take a close look at the ECT adapter block, and check for leaks.
Use a
mirror and a flashlight to check the back and underside of the connections. If you feel for leaks at the
gaskets or at the sensor, be careful. When the engine warms up these areas will be very hot and you
can burn yourself.
313.
After running for about 30 seconds, shut the engine off.
314.
Top off the coolant system as follows:
315.
Loosen the filler cap on the expansion tank to release the pressure (if any) and fill it up about half
way with more of the 50-50 anti-freeze mixture. Replace the pressure cap.
316.
Remove the plug and gasket from the thermostat housing and pour more of the 50-50 mixture of
anti-freeze and water into the open thermostat housing until the fluid reaches the bottom thread of the
opening. Replace the plug and gasket.
317.
Restart the engine.
318.
Check your timing- the base timing should be 10 degrees, as specified by the factory.
319.
Allow the car to warm up to the point where the top radiator hose is warm to the touch, which
means the thermostat has opened.
320.
Shut the car off.
321.
Top up the cooling system one last time, repeating the steps detailed immediately above.
322.
Restart the engine.
323.
Verify that the electric cooling fans come on automatically.
If the engine gets completely warmed
up, but the fans do not turn on, double-check that the fans have power. Check the black connector
with a brown wire (fan power) attached to the 12+ V constant male spade terminal labeled as “7” at
the fuse block. It may have been knocked loose when the fuel injection harness was connected to the
fuse box. When should the fans come on? On the early cars, it’s about 185 degrees Fahrenheit; the
needle on the gauge will be about halfway. On the later cars it’s about 205 degrees; the needle on
the gauge will be a little past halfway. The problem is the instruments fitted to the late MGB have no
scale.
324.
Enjoy your Moss MGB Fuel Injection System! Visit us on the WEB at www.MossMotors.com
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