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  1. Stillreelin

    1998 Mercruiser 4.3LH Vortec performance upgrades

    About 4 years ago I replaced the original 1998 4.3LH 4 barrel 225hp V6 vortec with a remanufactured one. It never had the punch like the original engine did. So I still have the original engine and was going to take my time and rebuild at my own pace. With that being said the plan is to have...
  2. Stillreelin

    4.3L Mercrusier closed cooling overheating problem

    Ok take a long story short. I noticed a oil leak in the front of my engine. It turned out being the timing cover. In fixing I had to take off the water pump. I reinstalled the water pump and fill the heat exchanger with anti-freeze. I started the engine an ran it. It would bubble anti-freeze out...
  3. Stillreelin

    1998 4.3L LH vortec Mercrusier top end issues

    Two years ago I put a remanufactured engine in my 21' sea pro. I put new exhaust, intake (Factory), edelbrock 600 4 barrel carb(Had the weber 4 barrel on it), electric fuel pump(gauge shows 7 psi) , plugs, wires, cap, module, icm, coil, and a fresh water system. The engine, carb and intake all...
  4. Stillreelin

    Trim tab stuck down.

    I have a Boat leveler trim system. First the port switch went bad. wanting to go out this weekend I had to go to west marine and get a Bennett switch. The only difference is the colors on the wiring, which I already figured out by research. The starboard goes up and down fine. The port tab went...
  5. Stillreelin

    Popping Out of carb....

    Well I have a 1998 4.3 liter vortec mercruiser w/4 barral carb.Last year I replace the engine with a remanufactured one. I have the holly 4.3l 4 barrel carb on it now. What happens is the boat starts right up and runs great until it starts to go over 4000rpm. Then it will start to pop out the...
  6. Stillreelin

    Bad Tach ?

    Changed all my gauges on my seapro which has a 4.3l V6 Mercruiser.Went to start my boat and it would not start. I had weak spark out of the coil. After a few hours of checking, I unhooked the gray wire from the tach. The boat fired right up. I would assume that the tach is bad and it is not the...
  7. Stillreelin

    Mercruiser performance Question?

    I replace my 4.3 liter V6 mercruiser. New everything from the carb to putting fresh water on the motor. The problem that I am having is it won't go over 4400 rpms and when it is wide open,it will run smooth then will act like it drops 100 rpm then picks right backup. It will do this the hole...
  8. Stillreelin

    4.3 V6 1998 Mercruiser Engine knock

    After trolling all day I put it the engine in neutral and as it idled down and it started to knock and proceeded to shut off. When I tried to restart it the engine got compression lock on the first crank, proceed proceed to start on the second try.The engine run great back to the dock with no...
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