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Still working on the old ranger. Everything seems to be working OK thanks to the advice I have received from this site. Fishing yesterday a storm started moving in, so I went to wot to beat the storm. I noticed the RPMs went to 5400 and the speed 53 MPH (according to my GPS). I thought it ran...

Reading the old spark plugs with the visable electrodes is simple, but the plugs in my 150 Black Max spark plugs does not show the electrodes. How can you read these plugs to check if it is running too rich or too lean?

Checking the charging system to the cranking battery.How many volts should be going into the battery from a 150 Black Max at idle?

I was going to check the reading of my spark plugs and found they have no electro. Is much different in the plugs with or without electros?

Still working on the ranger. Everything seems to be working good except gas consumption. Ran down the river about 2 to 3 miles and it burned 4 gallons of gas. This is a 150 Black Max. Thinking the carbs needs to be reworked. I have rebuilt several automobile carbs. Would the 150 cards be much...

I need some advice on replacing the aerator on a 1986 ranger.How difficult is this, and what do I need to watch for while replacing the pump

My battery is good. What will keep it from charging while running the motor

Is there a trim alarm on ranger boats?

I have just bought a 86 ranger with a 150 mercury. While crusing an alarm under the console will go off for no reason.What could this be? This is a continuous alarm that seems to stop after triming the motor.