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1987 Mercruiser 200/v8 io with Thunderbolt 4 Just started a few weeks ago... go to start, just a click. again, again, again... starts right up on 4th or 5th turn. Now its like the 10th turn. But when it starts, it starts and runs beautiful. Any ideas on where to begin?

Another update: I got a new exhaust boot and installed. New riser gasket and boot installed nicely (but wouldn't you know it a bolt that hangs the throttle assembly on the riser broke off while reinstalling - but an easy fix). Fire it up and it runs beautifully. The lake was like glass...

Update: I went to take it out again last night and fired it up, getting ready to leave and had opened the engine hatch to inspect a weird noise. There was a little water coming out of the 3-4" exhaust boot coming off starboard riser, in the crease. Dry rot. Pain in my ***, but with Prime...

I have a cuddy, and at the time had roughly 23 gallons of gas, no gear, only myself.

I also found from research today the acceptable range is 4400-4800 for this year engine

I'll update this after looking today: 19P for the 3 blade prop

Hello all, curious if my engine is performing the best it can. I had it out today on Lake Dora in Central FL. Flat, minimal wind. Had it wide open and it hit 45.6mph at around 4500 rpm (or close to it). Engine seems to be running nicely... stays right around 140 degrees, fires up on the...

So my plan was to start with replacing the battery connections... even though I figured it was the starter. They needed it anyways. After getting all the cables and terminals replaced, I went to get a feel for the bolts on the bottom of starter and who would've guessed: both damn bolts were...

I was reading yesterday that bad battery connections (dirty) can cause this as well. I literally just replaced one of my batteries and left the other one out. put i tin the water with one and it ran great. Docked it, and put the other battery in... next day it started with the grinding. I...

I have a 1987 200/v8 merc. I put it in the water on Sunday, started great and ran beautiful (just had the lower unit serviced and seals replaced due to leaking gear lube). Parked it at my dock, washed it etc and when I went to start it last night, it made an awful grinding noise. I stopped...

Vinegar, water & elbow grease!

Nice looking boat man

No noise when spinning by hand...