Both of these species are not common in North Dakota and were found to have tongues more than twice the length of the orchid spurs. This means that they could reach deep into the nectar-filled sacs from farther distances, without pollinating the plant. Researchers also captured eight bumble bee species.
To perform a standard ignition coil primary resistance test, the ignition should be off in the car. Once the two low voltage coil terminals are disconnected, the resistance should remain between 0.3 and 1 ohms. A switching test uses a 12 VDC test lamp. A small straight pin should be inserted into the wire that runs the negative coil to the TFI module. The pin can then be connected to the lamp.
5. Perform a spark plug wire resistance test. Locate the spark plug's resistance rating in the vehicle's factory service manual. You can also search online for the resistance of after-market wires. 1  Use an ohm meter to determine if the resistance of the wire is in compliance with the recommendations. Check the spark plug wire, and examine the insulation around the wire. 2  Look for damage due to high heat from the engine compartment (scorch marks). 3  Check for corrosion between the boot and the spark plug and coil.