Mercruiser Distributor Sensor Failure

If you own a late model mercruiser engine in your boat you re almost guaranteed to run into one of these common problems.

Mercruiser distributor sensor failure.

Find distributor assemblies components including module sensors pick up coils pole pieces for your mercruiser stern drive using the application chart from the mercury quicksilver catalog. Ignition sensor kit 18 5116 1 ignition pick ups replacement for mercruiser thunderbolt distributor on 4 3l 5 0l 5 7l 7 4l 8 2l engine 87 91019a2 87 91019a6 87 892150q02 87 861780q4 47 99 47. If 12 volts is present remove the coil spark wire from the distributor and connect it to a spark gap tester to ground. My mechanic has been buying his parts from kellogg wholesale marine in ct.

Remove the white green lead from the dist. Replaced the distributor cap with a new mercruiser cap and had same issue again 2nd time out. If you have no spark there are several things which can be at fault. Crank the engine and check for spark.

I have a 3rd cap now with the same problems. We are all experiencing similar problems. Remove the main coil lead from the center of the distributor cap and install the spark tester. Mercruiser volvo penta omc distributor kit.

Make sure the other end of the tester is attached to a good clean ground. There are 2 other boats at my marina with similar engines that were tuned up at the same time.