Getting ready to to a compression test and leak down test on all 6 cylinders. Boat has ran fine for the 3 seasons I've owned it. When changing manifolds this spring I noticed this exhaust port. The center port exhaust port looks to have some deep rust? What does this photo tell me about this...
Iboats crew: I've got my exhaust manifolds and elbows off for replacement. Thought I'd do a compression test and leak down test while I have the easy access. Test kits will arrive tomorrow. With the exhaust manifolds/elbows off, there are several electrical ground wires which are currently...
4.3 mystery water hose
Hello, I would really appreciate help in identifying this hose while I have the exhaust off as I'd like to replace it. I believe it takes water from the outdrive, to the engine. I've looked through both the engine and outdrive exploded diagrams as well as the online...
Hello iboats Members,
I've ordered new Mercruiser exhaust manifolds and risers for my '90 SeaRay 200BR with 4.3L Mercrusier, 2bbl engine. In the mean time, I'm realizing I know very little about the exhaust shutters.
How do I inspect them? What should I be looking for and how do I...
I have a '90 4.3L Mercruiser with raw water cooling (no heat exchanger) and am about to order up some new exhaust manifolds and risers to install. Boat sits on a trailer unless it is being actively used. Gets 4-8 hours of run time in salt water/year. Gets 8-14 hours/year of run time in fresh...
I've had a '90 SeaRay BR200 for 3 boating seasons now. I've taken it out into some near San Juan islands for a handful of day trips and one overnighter. I've always been concerned about what to do if the boat takes on water and we need to abandon it. The salt water water is very cold there...
Hello, I have a 4.3L Mercruiser on with an Alpha out drive on a '90 SeaRay BR200. I've had the boat for three boating seasons and am wondering how to tell when the exhaust manifolds and risers are due for replacement? I have had the boat in salt water a few times exploring some near San Juan...
I recently winterized my engine block and manifolds. When draining the water out by removing the brass plugs on either side of the block, the water that drained out was not at all clear, but rather was blackish/grayish in color. This is my 3rd winterization season with this boat/engine and...
Last week we took our '90 Sea Ray 200BR with 4.3l 2bl alpha 1 (engine s/n: OC861086, drive s/n: OD305493) out for its first spin of the season on a local lake.
Two things were odd.
First, last winter as part of my winterizing routine I drained then refilled the outdrive gear lube. Filled...
Hello, my 4.3l 2bb Mercruiser s/n: OC861086 ('90 SeaRay 200 BR) has this consistent issue where after starting and running the engine in the lake, then shutting if off once it is up to temp (145F of the gauge), it requires ~ 6+ seconds of cranking before it re-fires. When cold, the engine...
'90 Mercruiser 4.3l 2bb s/n: OC861086 in a SeaRay 200 BR. Often (not always) the engine will stall shifting from forward to neutral, or reverse to neutral. It seems if I move the control faster, then stalling is avoided. Movement of control seems smooth and easy to me. I do not notice any...
Engine s/n: OC861086
So, just installed new lower unit impeller, new lower unit oil, re-installed block and manifold plugs, reconnected water hoses. I put on the muffs with water and started the engine and I ran it for a while.
I shut it off as I soon began to wonder if I need to 'fill' the...
Hello, I have a 262 cu-in GM-v-6 mercruiser engine, OC861086, in a '90 sea ray 200 BR. I want to put in a new thermostat and have the housing removed from the block but the existing t-stat doesn't want to come out. There is a metal sleeve that seems to be holding it in place from above? I've...
Hello,
Today I changed the impeller in the lower unit of my Alpha 1. I had the lower unit in gear during reassembly so that by slightly turning the propeller I could align the spline shafts on the drive as I was sliding the lower unit up into the upper unit.
First, I tried it with the lower...
