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  1. 87concord

    350 MAG MPI computer questions

    I’ve got a 350 MAG MPI and the serial number is 0L316222 The ecm is MEFI2 It has had a code for “low oil pressure tell tale indicator set” the scan tool also reads “fault switches problem” it has an oil pressure switch by the distributor and a bell style oil pressure sender on port side of...
  2. 87concord

    1994 PCM 5.8 fuel pressure

    I’ve got a 1994 Natique with a PCM 5.8 Protech injected engine. It’s been running rough and stumbling intermittently. Fuel pressure at the Schrader port is showing 17 psi on the rail. That seems low to me but I can’t find the spec anywhere. Can some one please tell me what the pressure should be
  3. 87concord

    Need some King Cobra advice (cone clutch drive)

    I'm looking at a boat that is equipped with an OMC King Cobra drive. I know a lot of the parts are NLA and I'm also aware that these drives are pretty tough. Is there anything I should look for when checking this boat out? Trouble area? Tell tale signs of wear and tear/abuse? I'm probably going...
  4. 87concord

    You know what this website needs...

    This page is a great resource for boaters with repair and trouble shooting questions. This page also lacks on the personal level. It needs a non repair section for ALL members to be able correspond with each other and gain trust and friendships. Lots of other boating forums have sections not...
  5. 87concord

    Can't get primer bulb to prime with new fuel tank

    Long story short. My dad bought a '79 glastron 17ft boat for my sister for her graduating with a masters. Boat is in mint condition. Has sat inside for last 25 years. Runs like a champ. For some reason somebody took the original fuel tank out and was running remote tanks. We decided to buy a new...
  6. 87concord

    Thunder Bolt IV v6 ignition module

    What's the chances one of you guys has a v6-14 ignition module laying around you could let go of at a fair price. Need it for thunder bolt IV system.
  7. 87concord

    Need help with merc silent choice diverters

    I've got the merc silent choice setup on my boat and it's leaking water around the bushing and seal where the flapper rod comes thru the side of the pipe, I've got new seals and bushings but I'm not sure how to go about replacing them. Can I do it ithe boat or do I have to take the diverter off...
  8. 87concord

    1993 50 hp over heat alarm sounds continuously

    Working on a 1993 50 hp on a pontoon boat. The boat was sitting for a few years and while sitting somebody tried to steal motor and cut all wires and cables. Ordered new remote and wiring harness and cables and installed them. Boat started ok but ended up needing carbs cleaned. Done. Now we are...
  9. 87concord

    Alpha one gen 1 seal ?

    My aunt has a boat with an alpha 1 gen 1. She said they noticed oil leaking from around the prop and doesn't know what to do. My guess is prop shaft seal. Anybody else have an idea as to what it could be? Are any specialty tools needed to change that seal if that ends up being the case?
  10. 87concord

    Thunderbolt IV timing question

    I've got a thunderbolt IV ignition with the v8-24 module. At what rpm is the advance all the way in so I can check my total timing?
  11. 87concord

    engine serial number location 1987 260 5.7

    1987 260 5.7L. where would the merc serial number be on the block?
  12. 87concord

    5.7 oil pan question

    can you use a truck oil pan in a boat application?? why or why not?
  13. 87concord

    need a wiring diagram or schematic for 1990 mercruiser alpha one power trim motor

    im trying to locate the fuse in the trim motor but cant find it, anybody have a schematic they can post?
  14. 87concord

    alpha ss drive

    anybody know anything about these things or where i can get a good used one?? ive heard they are good for 5-7 mph bolt on
  15. 87concord

    King Cobra shift question

    Working on a 1988 5.7 King Cobra, replaced the lower (red) shift cable because it was stuck in forward gear would not go to reverse or neutral. does a king cobra have cone clutches and if so will it get stuck in gear if shifted while the boat is not running?? we have it shifting to reverse...
  16. 87concord

    speed calculator

    can somebody post the excel formatted speed calculator?? i searched it in the archives but it wont load for some reason, would appreciate it!! thanks, dave
  17. 87concord

    1997 force 120 hp starting issue, need help quick if possible

    my buddy is at the lake and cant get his engine to turn over, its a 1997 force 120hp. when you hit the key it will only crank about 1/4 turn. he hooked the jumper cables straight to the starter, same result. he took the spark plugs out and the engine cranks just fine, he switched the...
  18. 87concord

    1978 Johnson 140hp Seahorse

    what is the recomended RPM at wide open throttle on a 1978 Johnson 140 Seahorse V4?
  19. 87concord

    5.7 King Cobra Trim Issue

    1988 King Cobra Drive, the trim has leaked down slowly over the last week sitting in the drive way. what is a good starting point for troubleshooting
  20. 87concord

    1988 350 hp ?

    anybody know the hp rating on a 1988 king cobra 350?
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