MSD's Single Channel Digital Ignition Tester checks the operation of all of MSD's single-channel CD Ignition Controls, so troubleshooting can continue once the ignition tests good. The tester produces a simulated trigger signal that fires the ignition just as if the engine were running; a special load-producing clip-on spark plug is included to connect to the coil wire, and if the spark can't jump the gap of the tester, there's an ignition problem to track down. An LCD display clearly shows the simulated rpm, letting you test the accuracy of rpm limits, rpm-activated switches, shift light operation, and your tachometer. The tester operates on 4, 6, or 8-cylinder engines and simulates up to 16,000 rpm, and for MSD's Digital Programmable 7 Ignition Controls using a non-magnetic pick-up as a sync signal for Individual Cylinder Management, it includes a circuit to check that operation too.
Specifications:
- Category: Vehicles, Equipment, Tools, and Supplies
- Part Type: Ignition Coil Tester
- Product Type: Ignition Tester
- Sub Category: Ignition Coil
- Compatibility: 4, 6, or 8-cylinder engines; MSD 6, 7, 8, and 10 Series Ignition Controls
- RPM Simulation: Up to 16,000 rpm
- Trigger Inputs: Breaker points, amplifier, magnetic pickup
- Warranty: Manufacturer's Limited 1 Year Warranty
- Part Number: 8998
FAQ
What does the MSD 8998 tester check?
It checks the operation of all MSD single-channel CD Ignition Controls, including the 6, 7, 8, and 10 Series.
What rpm range can the 8998 simulate?
It simulates rpm signals up to 16,000 rpm and works on 4, 6, or 8-cylinder engines.
Does the tester include a spark plug?
Yes, a special load-producing clip-on spark plug is included to connect to the coil wire.
Can it test cam sync signals?
Yes, for MSD's Digital Programmable 7 Ignition Controls using a non-magnetic pick-up as a sync signal, it includes a circuit to check that operation.

