View Full Version : General Q & A
- MSD Marine box wiring
- 502 Mag Mpi repair after water in oil
- Warm water in bilge
- Gibson downturns on 900+ horsepower motor
- HP 500 carb distributer wiring??
- Fault codes on 2011 Baja outlaw
- TRS transom washer stack.
- Soft intake gaskets
- 496 HO - IAC 99% Missing 1000 RPM
- Formula 419 with 525sc's. Fresh water cooled. How to run engines on trailer?
- Pushing the spark plug leads between the header, any trick??
- T&D Shaft rockers
- Merlin or Dart
- 525 efi stock fuel system capabilities
- Apache Scout Questions (1987 22 I/O Bravo Package)
- 500 EFI Bogging/hesitation getting on plane - low WOT RPM?
- 1992 Mercruiser 454 magnum IAC valve location?
- Cable gland grommet fitting for trim indicator cables
- Fresh Water Flush Connections on 496HO
- 525 efi change over
- Blower shop 250 vs Weiand 256 or ???
- Sunseeker boats
- What is going on here - mag mpi 555 ecm serious neg pressure in crankcase - iac?
- High fuel pressure?
- HELP !!! My Merc 525 EFIs are over revving !!!
- 2nd time here we go again clanking ticking noise after engine shut down
- Blue Print Motors
- CMI Gen X Vs. Hardin's Hurricane Lites
- Parts vendor? After first season, where do you shop?
- Engine surges when trimming drive
- 502 mag plug wires
- 4Corner idle Screws
- Exhaust Cutout Question
- Rooke Question; Hardin Bravo Sea Pump
- Favorite RTR Heads for SBC??
- Positive crankcase ventilation system
- Harmonic Balancer Timing Mark Moved
- Holley Carb Spring Loaded Needle and Seat
- Low Oil Temp
- Low water pickup flush kit
- Gen 3 cool fuel module (Mercruiser)
- Hustler 39 with outboards handling?
- Mercruiser 5.7 efi stalled, won't start
- 496ho Constant alarm until I turn it off
- Mercruiser 7.4 serial numbers?
- 700 SCI Problems
- Mercrusers 525's ?
- 4" tip internal flaps
- Mercury 525 EFI 502 CID
- Cam degree calculation questions
- 250 Marine blower pulleys
- Merctrans 2
- Tach shorting to ground?
- Bravo one with imco uppers clutch
- 1.8 vs 1.7 rockers
- Bad day for the Volvo Penta
- Velvet Drive Question
- Engine stalls stalls when put Into gear!
- Setting base timing on Daytona sensors boxes?
- mercruiser distributor cap
- Mercury 400R - experience & life expectancy?
- 454 mag backfiring won’t rev up.
- Merctrans 2 no forward or reverse
- Has anyone ever measured the water temp coming out of an intercooler?
- Broken starter blot/block Merc V6
- Fuel Pouring out of vacuum line(intake/fuel regulator)
- Corsa muffled tips
- HP 500 Low oil pressure, low water pressure, low engine temperature
- thunderbolt IV timing
- Donzi 377 scorpion timing/idle issue
- Ethanol Free Gas - any cons?
- Question about transducer install
- Bad oil pressure sensor on 496HO
- What's the fuel pressure supposed to be on a 2007 8.1 MAG?
- Need advice...Again. 1990 Merc 454
- 500 EFI ECU malfunction?
- Prime new mechanical fuel pump
- 1999 Mercruiser 7.4 gen 6 MPI gaskets
- Techmate Pro IAC test question
- Leaking exhaust on 496HOs 2005 370SS
- No spark with new everything Mercruiser 3.0
- 7.4MPI does not turn over
- 496 MAG intermittent shut offs problem
- Fel Pro Intake Gaskets - 17342 vs 1211
- Anyone adapt Holley EFI with the stock Magnum MPI induction system
- What is this Mercruiser 3.0 Wiring from coil to dist
- 90 fever 29 looking for washers
- 502 Backfires at WOT
- 47 Wellcraft Excalibur finally in the water, a thank you to those who helped!
- 496HO Grey Tach Wire
- Help boat got overheated , doesn’t run right ..
- Quadrajet carb collectors, rebuilders
- Upgrade to mechanical fuel pumps
- Demon 850 Baseline Jetting
- Gil sea strainer lids??
- Gasket seat spark plug recomendation.
- 502 water in oil?
- 900-843944 Mercury Aluminum Heads
- Gill Manifolds and Seaward Risers
- Gear Oil Leak???
- New motors and drives
- Tough decision, NEED HELP!!
- Serial Number help Mercruiser 5.0 or 5.7 engine?
- GEN VI BBC Cam Bearing Installation, Bearing 5
- 496MAG HO seems down on power for planing.
- Looking to build my 502 Mag but new to boat engines
- Innovate LM-2
- need help with cooling and correct riser gasket
- Cam swap
- Sticky?? Cam overlap degrees for marine cam selection
- 1999 hp 500 carb jetting
- Mercury 525 EFI Idle Stall Question
- Wideband location
- Slow Acceleration Mercruiser 4.3 tbi
- Affraid of reversion, exhaust HELP?
- 92' Mercruiser 7.4L Won't Idle
- Procharger/Vortech belts
- OMC 5.7 timing
- Specs / replacement for stock 6.2 mpi cam?
- 500 EFI Not Charging
- Catastrophic Engine failure. 454 gen 6
- 525 efi boat purchase. What to check on engines?
- Lean condition on odd Cylinders - Mercruiser HP420
- Merc 502 Timing Issue - any help.
- Breaking belts
- 2.5 EFI's 280hp
- Baja H2X or Eliminator 234v
- closed cooling?
- Low oil pressure after boat was not started for two years
- O2 Sensor Location
- 588 refresh
- MPI EST Distributor Timing
- Offshore Mount
- What Gen 496?
- Back Fire through intake
- gen 6 502 mpi aluminum water pumps
- Distributor gear for Bbc gen6?
- Distributor gear for Bbc gen6?
- Fuel Injection Help
- HP 500 faint engine alarm and dim warning light situation on Hustler 388
- Need some prop advice please...
- Oil pumps… draining and filling oil, priming?
- Merc 383 6.2 cam needed for stock ECU
- 7.4 mercruiser twin, one will not rev over 1000
- Fuel flow
- Target boost psi and timing numbers
- 525 EFI Fuel Filter Question
- Mercruiser 350 Mag MPI - Smaller Sea Water Pump Pulley
- 5 year old batteries or 29 year old alternator.
- ISO 525efi Fuel Filter Body
- External Hydraulic Steering Hoses
- Mercruiser 350 Mag MPI 153 Teeth Flywheel Swap
- Gen 4 oil bypass
- New to Lake Erie
- Intermittent trim pump/switch issue
- Update on Marlin 26 restore , exhaust question
- 496 mag exhaust manifold over temp
- Fault 19 over speed
- 2002 496 MAG port engine lags at WOT
- Alternator issues
- Help With Desired Idle Speed MEFI 1
- Both engines turn over , no fuel pumps .. been sitting a few months
- Clevite bearings upper and lower rod bearing?
- Merc blue 377 piston questions
- 525efi shutting down intermittently
- Dual carb supercharger to EFI conversion
- Calling the boat carb masters, lots of fuel still lean.
- LOTO Boat Mechanic
- 350 mags causing issues
- Bravo 1 bellows retaining ring problems
- Tall deck exhaust issues
- 496 HO w/ DTS momentarily engine power loss and 1 beep
- mercruiser distrubitor question
- Part Question
- Valve springs and lifters in and engine that sat for 6 years
- How much HP will Maximus prop handle?
- Got screwed on a boat ..Need help
- Fuel pump selection
- Rinda - Diacom pulling engine hours
- Scoops for Cigarette 38'
- Lost rpm
- Pair of 2007 525efi flop at same time
- Pair of 2007 525efi flop at same time
- IMCO Gimbal Torque Specs
- Detachable eng hatch pin
- 525SC fuel pressure
- 496 HO temp questions
- Fuel pickup
- Engine hatch actuator (acculift)
- 525 cam and crank sensor location
- 7.4 l injector question
- block paint
- 588 block pressure
- Oil filter Question - Since I have not seen one in a while
- 502 EFI to HP 500 carb constant alarm need wiring help
- AFR/Wide band Gauge. Analog or Digital preference?
- 350 MAG MPI stumbling. Need some help
- What kind of raw water pump is this?
- Fuel line and fittings
- Its or imco
- Thermostat housing video / trying to add freshwater cooling
- Blower rebuild
- 502 MPI Loud Whistle At Idle
- 1997 502 Mag MPI
- Hydraulic Steering System
- New rebuild 454 Gen VI L29 running hot
- 525 EFI Cam Position Sensor
- How's this engine look ?
- 42 Fountain water pick up locations
- 2005 Indmar 8.1L TAC Fault
- Firing Order for merc 8.1 HO
- What goes here? Iron duke 4cyl merc
- Merc 8.1l 3200rpm max?
- 8.1 Scanner / how to disable fuel pump
- Mercruiser 496 crank no start
- Mercury 500 EFI closed cooling
- Spider crap
- 496 mag ho oil pressure
- Starboard engine won’t fire
- Overheating alarm - Mercruiser 7.4 MPI
- 1995 Formula with 502 and VST
- 2 engines = 2 different problems
- 496 Mag HO RPM issue
- 500 EFI High Idle?
- Super tacky light blue grease? What is it
- 496 HO Ignition Coil Style
- 502 surging and loading up?
- Holley 4 barrel gaskets
- 1200 SCI shutting down
- 1990 Mercruiser 454 magnum overheating, stumped!
- Drain procedure 496 MAG
- Trim Indicator Issue
- Another closed cooling question.
- Fuel line size
- Water press gauge tubing
- Bad Boy mowers
- Putting my transducer puck back in
- 502 mpi hard start cold
- fuel hose?
- 540ci condensation and oil temps
- Bravo 1x top cap
- 2000 377 Scorpion questions! ASAP
- Tall Deck Rear Starter
- Hydraulic Steering Fluid
- Hard starting
- HP500 (Carb) oil pressure
- WTB clamp for Arneson Trim cable!!
- Sea water pump - Air Actuator Hose
- Hydraulic steering losing psi over 4K RPM??
- 454 rebuild problem. 6 psi oil pressure.