a '95 riviera does not have a distributor. If you mean the ignition coils, then you probably looking at bad ignition module-located under the coils. Or bad crank sensor.
bad fuse,bad coils, bad ignition modual
Ignition coils can go bad with age. They can also be damaged by a bad alternator putting out improper or unclean voltages.
There is a total of 4 ignition coils.
No
Unplug ignition coils one at a time until you find the one that doesn't effect the rpm's.That's the one that's bad.
Electronic ignition, also known as EI, can solve a lot of problems that come with one's ignition system. Not all electronic ignition systems require a distributor, but they do require coils.
Check Ignition Coils Check Ignition Coils
Bad coils or perhaps a bad crankshaft position sensor.
A bad coil can damage a converter. If the engine is misfiring, it will cause raw fuel to get into the converter and that can cause failure.
Many things can cause a snowmobile engine to back fire. Ignition coils ( spark plugs, coils) or water in fuel. Check these and maybe it will solve your problems.
Ignition coils are very rugged and reliable, but can fail for a variety of reasons. Heat and vibration can damage the coil's windings and insulation causing shorts or opens in the primary or secondary windings. But the number one killer of ignition coils is voltage overload caused by bad spark plugs or plug wires. So the answer to your question is yes. Do regular tune ups