I’d like to do compression tests on my Suzuki 60hp Four Strokes. Is there somewhere to find easy instructions to do it? I’ve done it about 6 yrs ago. Also, can’t I use a pressure guage from one of the auto retailer shops?
remove spark plugs – all of them. screw gauge into first spark plug hole, turn key for a few revs – best to ground out the plug wires to the block. repeat for the next cylinders. its really that simple.
yes on autozone, pull all the plugs – that way the starter doesnt struggle. The way I ground the wires is by reinstalling the plugs in the wires and laying the plug on something metal like the cylinder head.
If your not worried about verifying spark, pull your kill lanyard. It will still crank but not spark. Like harbor shocker said wide open throttle to check compression on a four stroke. It should also be ran to temp.