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  1. ehlien

    50HP 83 Mariner Carb Throttle Coupler /Linkage Diagram

    Does anyone have a picture or diagram of the linkage that connects the two Walbro carbs on this engine. I had one but can't find it. Thanks
  2. ehlien

    Troubleshooting No Fuel Problem

    I just replaced the mechanical fuel pump on my 454 IO and I've been cranking for a while but not getting any fuel to the carb. Is there a trick to get the system primed and pumping fuel?? Thanks
  3. ehlien

    Sea Wate/Fuel Pump Troubleshooting

    My fuel pump was toasted on my 454 IO and I installed a new one today but I noticed the cam wheel on the drive shaft of the water pump that actuates the fuel pump's lever just spins freely on the shaft. I'm thinking that's not right and it can't possibly actuate the pump. If so the...
  4. ehlien

    Winterizing a Non Running Engine

    Well its that time but as of now I have not got my 454/bravo 1 running. I've always winterized a running motor. What is the best way to winterize a non runner?
  5. ehlien

    Fuel Feed Issue

    Well a new problem. Running home yesterday my 1994 ..454 Baja was running fine at about 3500 RPM . Approaching home I decided to throttle back to about 1000 RPM and just run back in slow. When I throttled down it died out on me. It sputtered a couple times on cranking at first then nothing and...
  6. ehlien

    About Knock sensors

    My 1994 454 Mercruiser has a knock sensor on it. What is their purpose and how do they work?
  7. ehlien

    Problems With 454 Mercruiser between 1500 and 2500 RPM

    I have been working on my boat which was not run for a couple years to get it back in service this summer. Its a 1994 454 with a quadrajet carb. Initially it would not run up over 3000 RPM. I went through a series of tests etc with the help of many here and eventually found the ignition...
  8. ehlien

    Winter Gas Storage

    Is it better to store a boat with and empty, 1/2 full or full tank of gas and why??
  9. ehlien

    Can"t Get My 454 Mercruiser over 3000 RPM

    Always something. My 1994 Baja with a 454 Mercruiser, Bravo 1 , and 21 pitch stainless prop. sat for about 3 years. Over the last month I have been debugging one thing after another. On Saturday I finally got it fueled with 50 gallons and launched however I was unable to get it to rev over...
  10. ehlien

    Warning Buzer Problem 1994 Baja 272 .. 454 Mercruiser

    Down to my last issue hopefully. Not totally new. Got everything running fine. Engine runs cool. Temp gauge works ..holding under 100 degrees using muffs, exhaust manifolds just warm . No smoke or oil burning. Oil pressure gauge reading good..... BUT..at start the warning buzzer goes on and...
  11. ehlien

    Fixed Sea Pump But Burning Oil

    So .. after my sea pump impeller disintegrated my 454's temp ran up and I shut it down when I saw some blue smoke. I replaced my Sea Pump and its running cool and smooth now on muffs but now I'm still seeing blue smoke on the right side exhaust. I pulled the plugs which are brand new and all the...
  12. ehlien

    Mercruiser Sea Pump Impeller Disintegrated

    The pump guts on the sea water pump on my 454 Mercruiser was dry rotted and disintegrated. When I replaced the impeller there was not much left. There were a couple bigger pieces and a lot of smaller debris but no way all the old impeller was inside the case. Will the junk all pass out or...
  13. ehlien

    454 Mercruiser .. Operating Temp

    What should the normal operating temperature be? Will the operating temp be the same when on muffs and a hose?? How long can you operate the engine on muffs?
  14. ehlien

    1983 50 HP 2 Stroke Carb Issues.

    I have a couple issues with the drive ability of my engine. A year ago I rebuilt the carbs which are in very good condition. Issue 1. Its start pretty easily and idles well in start up mode however ,even after I let it warm up, when I head out and try to give it full throttle it only speeds up...
  15. ehlien

    454 Mercruiser Overheated ,,now I need a Blue Exhuast Smoke Solution.

    After a couple years of sitting I finally got my boat, which has a 454 and bravo 1 launched. The motor cranks great now and it fires up on the first rotation. However 5 minutes out the sea water pump guts disintegrated due to dry rot and the engine started to overheat.. soon as it started to...
  16. ehlien

    Ignition vs altnator Connection Question

    I'm having trouble getting any spark out of my 1994 454 Mercruiser. I'm going through all the connections and components of the ignition system but no success yet. It occurs to me the only thing that I know changed since it last worked was a wire that came off the back of my alternator and if I...
  17. ehlien

    Mercruiser Circuit Breaker Test

    I'm trying to debug a non functioning ignition system. So far I have traced the lack of spark to the mercathode area on my 1994 454 . I just replaced a blown in line 20A fuse in the feed line from the positive battery terminal to the + terminal on the merctathode but now notice the 50A circuit...
  18. ehlien

    Gauges not a Working

    Just getting ready to put my 1994 Baja in the water after 2 years out of service and noticed non of the dash gauges are coming on when I initiate the ignition key. Other than a fuse that's out what would be a common cause for them all to be on the fritz?
  19. ehlien

    Starter Alternatives

    I have a 1994 454 Mercruiser that cranks very slowly. Chances are I may have a bad starter. If I have to replace it I was wondering if there is a better alternative to the stock starter?? Anybody have any experience on this subject?
  20. ehlien

    1994 454 Merc With Bavo 1 Wiring Diagram

    Anybody got or know where I can find a wiring diagram for a 1994 454 Mercruiser ??
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