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  1. 3

    2005 150hp Carb Saltwater Series Flywheel Removal

    How do you remove the nut that holds the flywheel? (top of the engine, that engages with the starter) The crank isn't turning but the nut just spins.
  2. 3

    Mercury Optimax 150hp Compression test

    I would like to do a compression test of a Mercury Optimax 150, but no battery/keys. Can I use an electric impact (spins around 550rpm) ran in reverse (I believe it's a LH rotation engine) with a socket on the flywheel? 15/16 socket? Bonus question, any tips or tricks to pulling the outboard...
  3. 3

    1997 Sea Ray SS - No Cockpit lights

    Anyone have any advice as to where to start looking for trouble shooting no cockpit lights on the above captioned boat? Lights were working at the beginning of the year, but stopped. Figured it was a bad bulb, but checked both back bulbs and they work fine. Definitely no power at the back...
  4. 3

    1997 28' SeaRay SS deck

    Boat has a soft spot on the foredeck, near the hatch area. Affected spot is around 36", L shaped. 1) Anyone have any luck repairing from the hatch area, without cutting the top or bottom? 2) Any have knowledge of SeaRays core material of the area? (I've heard balsa, but no advice as to...
  5. 3

    Fuel Issue - 2000 Formula 31PC 454 MPI

    Boat has a bad fuel issue. Fuel was drained completely, re-filled with fresh fuel, new fuel pump, couple new fuel lines, and still won’t take gas from either of the two tanks. Seems to run well off of a Jack tank. Could the tanks themselves be bad, or is it likely limited to the fuel lines? I...
  6. 3

    Bravo 3 Propshaft Seal

    Got my boat out and replaced the (destroyed) propshaft seal. Once out of the water, it had gear lube pouring down the skeg. Replaced the prop shaft seal, and all is good... but, what causes the prop shaft seal failure? Is this just something that happens over time? Is it caused by a worn...
  7. 3

    Bravo 3 Propshaft Seal

    Pretty sure I have a bad propshaft seal on a B3. Season started great, and didn't lose any fluid level on the reservoir for the first 8+ trips and over 10 hours of boating. Last trip out I noticed that level was down about 1/4", and figured I'd check into it more. After sitting for a week...
  8. 3

    MEFI Tuning

    Does anyone on here have any experience with MEFI tuning (MEFI 1/2 if it matters)? Any good location for .bin files, etc.? There are some auto options, but figured I would ask here first.
  9. 3

    Remove/Bypass Heat Exhanger

    Been struggling with a coolant loss for quite some time, so I’m considering removing the heat exchanger and having it pressure tested. What’s the best way to bypass the heat exchanger and run a raw water setup while I have the heat exchanger off? I boat in freshwater, there is almost no...
  10. 3

    454 XL TBI Firing Order

    Does anyone have a source document that states what the firing order for the 454 XL TBI engines is? I believe Crusader uses a GM supplied intake manifold, and there is a firing order stamped on the intake. I just want to confirm that the firing order stamped on the intake is in fact the...
  11. 3

    Oil Pressure Sending Unit Ohms

    How can I test the Ohms output from the oil pressure sending unit? I tried grounding a multi meter, disconnecting the wire from it, and reading the post, but I did not get any discernible reading. Starboard gauge and sending unit works fine. I've ordered no less than three sending units for...
  12. 3

    454 XL Bypassing knock sensor/oil pressure switch

    I know full-well that these sensors exist for a reason, and I know full-well that the OP sending unit is different than the OP switch... That said, I'm trouble shooting an issue where the engine runs great up to 1900, revs past 1900 fine at idle (no pops backfires, etc.) but will not: 1)...
  13. 3

    454XL fuel delivery issue

    It’s not any of the three filters, or the pump, or the regulator, or the anti-siphon valve. I’ve been through all of it, and pretty fed up at this point. Anyone know if I can drill and tap an O2 sensor on the area of the crusader exhaust riser that looks like a freeze plug? (it’s just an...
  14. 3

    Crusader 454 XL Cooling issue

    454 Crusader, complete closed cooling system (only the risers and exchanger are raw water cooled). I did a valve job on the starboard engine this year. All back together, running well, but overheats after about 5 minutes. When I was disassembling the engine for the valve job, I drained an...
  15. 3

    454XL Oil Pressure Gauge Issue

    Have a gauge acting up. (Crusader 454 XLs) Grounded the sending unit wire on the stbd motor, gauge pegs, grounded the wire on the port motor, gauge goes to zero. Gauge also reads backward (reads 20 psi at idle, when it revs up, reads lower). Could the wires be reversed on the gauge, causing...
  16. 3

    Limp Mode Q

    Did a ton of work to my port motor over the winter (rebuilt the upper end, and some)... Now I can't get it to rev consistently past 1900 rpms. Runs perfect below 1,900, idles perfect, revs perfect, will rev perfectly past 1,900, but always comes back down to 1900, near instantly. 1900 seems...
  17. 3

    V-Drive Issues - Warning and Fluid...

    1) Issue 1 - port motor has a V-drive warning and I can't seem to clear it. Interested in determining how to clear the code (engine scanner doesn't show anything), and if possible, how to jump out the warning so it goes away, even artificially. I've read some conflicting information, that the...
  18. 3

    Frustrating 454 XL TBI Issue

    Chased my ass for a month last year, and figured out that the top half of my STBD TBI was not operating properly, swapped my PT TBI to the STBD motor, and it ran perfectly. I rebuilt the damn thing before I put it on the STBD motor, which already was running poorly. Over the winter I...
  19. 3

    454 XL TBI Stalling Issue

    1996, 454 Crusader TBi (low pressure model). Boat starts and runs, and I can keep it running if I pump the hell out of the gas. It will rpm up to around 2500, and bounce between 500 and 2500, but if I let go of the throttle, it stalls. If I keep the throttle forward, it will stall, same as if...
  20. 3

    1996 454 Crusader XL TBI Stalling Issue

    I have a 1996 Trojan Express. The port motor runs fine, the starboard motor ran fine, until it developed the following issue at the end of last year: Turn key to ready, fuel pump kicks on, start the motor, motor starts, runs fine, then shuts off in about 10-15 seconds. Starts back up...
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