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  1. 3

    Vapour Lock?

    A friend has a pair of 1993 7.4 Crusaders in a cruiser. One of the engines is giving him trouble restarting if it is hot. Both engines start fine from a cold start, and will run just fine all day long. If he stops for 15 min or so after a good run, the starboard engine will not restart. Port...
  2. 3

    89 20HP Outboard

    I have a friends 1989 Merc 20HP outboard here that will only run on the top cylinder. There is no spark on the bottom one despite swapping the spark plugs, ignition coils, and changed out the switch box, and none of these has made any difference. Compression is good in both cylinders. Any...
  3. 3

    Crusader 8.1 Starting Issue

    Hey guys, I have a pair of 2003 Crusader HO 8.1s. They are MPI. The starboard one is acting up sometimes. About a month ago, I turned the key to the run position, and normally you would hear the alarm beep, the fuel pump come on, and then you can start it. There was nothing. Tried it again and...
  4. 3

    AGM And Wetcell Battery Charging

    So I want to upgrade the battery charger in our 42' cruiser, to a ProNautic 1260P. I am also installing a bow thruster, which will be powered by 2 AGM 31s in parallel. The new house batteries are four 6volt floor sweeper batteries. [2 in series, and then parallel with the other 2 in series] This...
  5. 3

    Dexcool or ?

    Hey folks, Bought a 42' 2003 Cruisers with 2 Crusader HO 8.1's in it. They have just over 300 hrs, and I suspect the coolant in the engines has never been changed. The overflow bottle has pink antifreeze in it, which I am told is Dexcool. I want to change out the antifreeze in both engines, and...
  6. 3

    Fridge Inverter

    I have a DE-251E Norcold fridge that runs great on 110V AC, but will not switch over to 12V when disconnected from shore power. I have diagnosed the problem, and have determined it is the oscillator. Fixing the fridge is not an option, and new ones are far too much $$$. I would like to mount an...
  7. 3

    One Crack In Block

    Hey guys, I have a friends V6 here, with a crack in the block due to improper winterizing. I have removed the intake, and this is the only problem I can find, besides a few frost plugs pushed out. I have never been a believer of band-aid solutions, but I'm considering JB welding it. Is this a...
  8. 3

    1999 3.0L Engine Block

    Hey guys, Did GM put any 3.0L 4 cylinder engines in any of their cars or trucks, or are they strictly for a marine application? Got a boating buddy with a cracked block, and he needs to replace it. Thanks!
  9. 3

    1990 Bravo Transom Assembly

    Hey folks, I am in the process of fixing the loose steering in a Bravo transom assembly. The engine is already removed for other repairs. The steering lever is loose on the swivel shaft. I have the nut almost off of the shaft with a wrench, and the steering lever would come off if there was...
  10. 3

    Thermostat Temperature

    Hi Folks, Happy turkey day to all of you south of the Canadian border! 1987 5.7 Mercruiser / with an OEM 140F thermostat. Would there be any benefit to changing it to 160F? Thanks!
  11. 3

    1998 Vortec 5.7 Intake Gasket... Help!

    Please have a look at the pictures below. The Felpro intake gasket in the picture fits perfectly on the heads. When you lay it on the intake, [2 barrel carb] you can see it does not seal on cylinders 3, 5, 4, and 6 on the bottom inner corners. The engine burns about 1/2 quart of oil in 4 hours...
  12. 3

    Dry Riser Gasket

    Hi folks, I am installing new OEM dry joint manifolds and riser gaskets on a 2003 4.3 v6. It uses a restricted gasket. Does it matter whether the restricted part of the gasket is facing for or aft? The old gaskets appeared to be facing forward, but it is hard to tell since the risers were...
  13. 3

    Stereo Noise Issue

    Hey folks, I have a noise issue on my stereo system that is driving me crazy. Last year I added an amp and 2 more speakers to our Monterey. It works great while I am hooked up to shore power, however when we are out on the water and our dual voltage fridge is running on 12V, I get this nasty...
  14. 3

    Trim Sender Replacement

    Hey guys, I'm in the middle of changing out the bellows on a pair of 2000 5.7GS with SX drives. I want to change the trim sending units at the same time, but am finding it very difficult to access the retaining clip holding the wires in place, in the transom assembly in behind the engine...
  15. 3

    2000 5.7L Carb to MPI?

    I have the chance to pick up a cheap 2002 5.0L Merc MPI, that I'm told is seized. Will all of the MPI related parts function properly, on a carbed 2000 Merc Vortec 5.7? Thanks
  16. 3

    2000 5.7 GS Low Compression

    Hey guys, I have a 2000 5.7 GS with low compression in the #1 cylinder. It reads 90 PSI while the other 7 read 180-190. I squirted a few ounces of oil in the cylinder, and it made no difference. I'm thinking my next step should be to pull the head, and see whats going on?
  17. 3

    Remote Oil Filter Issue

    The starboard Merc 5.7 EFI engine on our 98 Monterey, has a remote filter issue. Best as I can tell, no oil or very little is flowing through the factory remote oil filter. The engine runs just fine. It runs at 160F, and has 60 PSI when up on plane. The reason I believe there is an issue, is...
  18. 3

    1993 Yamaha 4.3L Cracked Block

    Hey Folks, I have the chance to by a 1993 18' bowrider and trailer with a Yamaha 4.3L I/O in good shape, except for a cracked block. I'm sure I can handle replacing the engine itself, but I'm wondering if aftermarket exhaust manifolds are available for it? The outdrive itself looks real clean...
  19. 3

    1998 5.7 GSI Will Not Turn Over

    Hey folks, I recently installed a longblock in a 98 Chris Craft, that was not properly winterized last year. I tranfered everything over from the cracked block and heads, and had it running on a skid without issue, before I put it back in the boat. Now I go to start it, and it wont turn over. I...
  20. 3

    No Power Steering

    1994 Merc V6 with Alpha Gen2, equipped with power steering. It takes the same effort to turn the steering wheel with the engine off, as it does with the engine running on muffs. The fluid level in the pump is where it should be, and the belt is tight. Is the pump itself likely to be faulty, or...
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