Search results

  1. B

    Mercruiser 7.4MPI wont go past 2600 rpm and rpm jumping at acceleration

    Hello all. Looking for some help as I am baffled to resolving my issue. I have a mercruiser 7.4MPI serial # 0L085399- MEFI3. I am having issues that when I go past 2000 rpm the needle on the gauge rapidly starts to jump from 2000 - 2200 -2500 and so forth its not a smooth increase in rpm like it...
  2. B

    Is my 7.4 MPI seizing up?

    Need help please. I have a 1999 7.4 MPI S/N - 0L085399 , I believe it is a MEFI2 . Anyways i have an issue where i would turn the key to start and the starter or engine would make a loud thump noise like metal on metal getting stuck. Almost sounds like the gear in the starter is getting stuck...
  3. B

    Mercruiser 7.4 MPI Oil Pressure Issue

    Hi all. Seeking for some advice in today's discussion and hopefully help others out using this post with a similar issue. So here is the core of what I think caused this issue or maybe its a freakish coincident. Anyhow this is how it all start to my oil pressure situation. I was in the process...
  4. B

    Mercruiser 383 Stroker Bravo V4 wont stay running

    Hi all, I am looking for some help on project of mine. I have a 383 Stroker with a carburetor.. When the engine is cold it starts right up and will run fine. I can see the fuel being pumped into the carb when I give it a few pumps before starting. The issue happens when the boat is in gear...
  5. B

    Engine Alarm 7.4 MPI

    Need your help guys! So Saturday I launched my boat for the first time this season and Sunday was the day for the maiden voyage. 7.4 MPI Mercruiser. A few issues that happened. 1) A beep tone alarm went off at cruising 3200 rpm and would not go away until I shut the engine off. It was occurring...
  6. B

    Question About Outdrives

    Please help. I am asking for a buddy of mine who has a searay 268 sundancer with a dry weight of about 5500 pounds. The boat was repowered with a 383 Mag Bravo V4. The question is that he is trying to replace the drive and that outdrive to me looks like a bravo 1 based on the shifter cover on...
  7. B

    Theoretical Question

    Theoretically, can I just pull the engine kill switch to disable the ignition system when performing a compression test? And just use a vice grip to clamp shut the fuel line so no fuel gets pumped into the cylinders? Also is the proper procedure to pull all spark plugs and wires when doing the...
  8. B

    Bravo 3 trim modifications ??

    So I want to bring up a topic that has been brung up plenty of times but still did not answer a few of my questions. Here is my situation. I have a bravo 3 outdrive with dual props at a 22p that reach recommended WOT rpm. First off when I have 5 people on board sitting in the cockpit area , the...
  9. B

    Bravo 3 Shift ??

    Is there a way to check if the outdrive shifts? Because i currently have the upper unit and lower apart and when i pull the little clamp shifter in or out the u joint shaft still turns both ways and does not lock like it should when in forward gear or reverse. Does the lower unit have to be...
  10. B

    Bottom paint help please!!!

    Hello all, I am looking for some help here with bottom paint. I currently have west marine cpp antifouling paint on the boat from last season and did 3 coats as recommended. This season I am changing paints and decided to go with interlux micron 66 which I hear is one of the best for saltwater...
  11. B

    Marine Tech Salary ??!!

    So I am considering a sharp turn for a carrier change. Was maybe thinking a marine tech but not like a regular no name boat mechanic, was thinking like a tech for Mercruiser or well known companies. Most research I have done is from early 2000 and data is no longer accurate. I read up on that...
  12. B

    Mercruiser 7.4 MPI oil leaking

    So I have been noticing some oil in my bilge every now and then after it sits for a few days. The weird parts is that every time i pull the dipstick it shows different reading. Fist it would show ok range then it would show add range. To me is seems like its engine oil based on the brownish...
  13. B

    Calling all the searay owners.

    Hello all. I am calling out all the searay owners who own the 270 with a single 7.4 mpi or know info about them. What is your top speed and cruising speed ? Mine was able to top out at 4600 rpm no problem but now barley gets 4200 and at that speed its 32 mph. Assume its bottom growth and also...
  14. B

    7.4 MPI not getting to WOT RPM

    Hello all, I recently purchased a 1999 270 SeaRay SunDancer with a 7.4 mpi and a 22p Bravo 3 drive with dual prop. When I purchased the boat in January of 2016 I had a survey done and a seatrial. Everything went well boat would top out at 4600 rpm as should. The surveyor did a compression and a...
  15. B

    mercruiser 7.4 beeping sound.

    So i have a quick question. When i turn the ignition key, on my dash make a 2 beeping sound with 2 different tones and then stops after a second or 2. It always makes this sound before start up. All gauges show normal reading and it does not make any other noises besides that. Any idea? Thank you
  16. B

    Aluminum Anodes for saltwater use

    So as the season is coming closer it is time to replace all the anodes on the outdrive and every year I always debate on what type to purchase. I am thinking about purchasing some aluminum anodes instead of the traditional zinc anodes since I boat in salt water. Has anyone every used the...
  17. B

    Gimbal housing border with no paint

    Can someone please explain to me the whole point and idea behind leaving a boarder of clear gelcoat around the gimbal housing? I was told that it prevents outdrive corrosion but can't understand why , all the boat's at the marina don't have it along with my boat. I am currently stripping down...
  18. B

    Running transducer cables in express cruiser.

    I am planning on mounting/installing a transducer in my 27 foot searay for my lowrance hds5 unit and was wondering what is the best way on doing it. I do not want to drill a half inch hole in the transom just so the connector could fit through. I was thinking on cutting about 6-8 inches off the...
  19. B

    Soda blasting bottom paint?

    Has anyone ever used the harbor freight 40# soda blaster? I am looking to invest into one for 140 bucks and use it to remove all the old paint from my boat. I go quoted 35 dollars a foot by a professional to do it and just not willing to spend over a thousand just for that. Some inputs or other...
  20. B

    Code 14 Coolant Temperature Sensor for mercruiser 7.4 mpi

    I need help finding the Coolant Temperature Sensor. I got the motor scanned and code 14 came up witch is Coolant Temperature Sensor. I can find a regular temp sensor but not a Coolant Temperature Sensor. My engine serial # is OL085399. And also a diagram on how to replace it would be good too or...
Top