Search results

  1. R

    Mercury BlackMax 175Hp, difficult staring, and then bogging down.

    Thanks for the reply, I another recent compression test and I got 110 in that scored cylinder/piston.
  2. R

    Mercury BlackMax 175Hp, difficult staring, and then bogging down.

    I found the year it was made, it is 1988. Recently it overheated again and this time scored one of the bores, see the attached image. I yet to do another compression test after this happen.
  3. R

    Mercury BlackMax 175Hp, difficult staring, and then bogging down.

    Hi Chris, I could not find serial number on top of the fly wheel. Sorry it was an old photo, the overheat sensor was connected some time ago. The spark plugs are slight brown and some oil on the head of the spark plug. Besides that, they are not rusted. I have tested the suspect coils, I am...
  4. R

    Mercury BlackMax 175Hp, difficult staring, and then bogging down.

  5. R

    Mercury BlackMax 175Hp, difficult staring, and then bogging down.

    Hi Chris, Sorry it was an old photo, the overheat sensor was connected some time ago. The spark plugs are slight brown and some oil on the head of the spark plug. The heads was pulled off, to check any passage ways was blocked. The heads was cleaned.
  6. R

    Mercruiser 5.0 MPI - Constant beeping

    Hi Chris, thanks for your reply. The year of the engine is 2003, I have attached a photo. From what I can see the sender was is not grounded, but I will check all the wiring again. The oil pressure gauge is workign and will goes up to mid way after running the engine for a few minutes, but I...
  7. R

    Mercury BlackMax 175Hp, difficult staring, and then bogging down.

    Hi Chris, thankyou for your reply. I think it is 1990-1992 model, there is not stickers or serial number. The Spark Plugs are silver model NGK Standard Spark Plug BU8H (they are clean and look new, should I replace them?) The beep is a very quick beep intermittent, miliseconds apart, like very...
  8. R

    Mercruiser 5.0 MPI - Constant beeping

    Mercruiser 5.0 MPI I kindly ask for help about the constant beeping. It starts a constant solid beep as soon I start the engine on cold start. Sometimes the constant beep goes away after I stop and restart the engine, then comes back… The engine is now no longer overheating, as I pulled out the...
  9. R

    Mercury BlackMax 175Hp, difficult staring, and then bogging down.

    Hi All, I did a compression test and got readings 110, 125, 120, 115, 120, 125 which is average for a 2 stroke. The engine now has problems starting, and when and if it starts it also running on 4 cylinders intermitted. I have spark on all 6 cylinders, and sometimes at half throttle I hear/feel...
  10. R

    Mercury Alarm Codes…

    I have the same problem, can you disconnect the alam from the oil sensor , if so how? Regards,
  11. R

    Kawasaki Jet Ski STX 1100 and water coming into the engine compartment while at full throttle;

    Hi, thanks for the reply. I have removed the plate underneath the Ski and could not see any cracks etc. However I placed water proof silicon at all the joints, then on the inside I re-fiberglass around the noozle with epoxy resin, mixed with talc. I am about to put a second layer of epoxy and...
  12. R

    Kawasaki Jet Ski STX 1100 and water coming into the engine compartment while at full throttle;

    It looks like the water is commign in from the side of the nozzle. I will remove the plate underneath the Ski, and furher inspect. I will re-fibreglass the Nozzle and around it.
  13. R

    Kawasaki Jet Ski STX 1100 and water coming into the engine compartment while at full throttle;

    Hi, I tied the boat and noticed water is coming from the Hull at the rear left bottom corner below the exhaust bottle, I disconnected the exhaust bottle, and re-cramp the water hose next to the exhaust hose going to the outer hull, at the rear. Then I took a video and notice it was not coming...
  14. R

    MerCruiser 5.0 Carb Engine Compression Test, Two Piston came back with Zero

    Hi, This MerCruiser 5.0 Carb Model Engine is on Bayliner. The Engine has not been started for a few years, I tried to start it it almost kicked over, so I did a compression test with the following results. Piston 1 - 85, 4,=90, 6=0, 8=60, 7-70, 5=0, 3= 130, 1=100. I know overall the majority of...
  15. R

    Mecury BlackMax 175Hp, Constant Beep and Overheating

    Hi Duke, before I was getting an intermittent BEEP within a few second of starting the engine. But Now I am getting a constant BEEEEEEEEEEEEEEEEEEEEEP as soon as I turn the key (instantly) and the motor starts. I disconnected the oil senor, and the constant BEEEEEEEEEEEEEEEEEEEEEP was still there.
  16. R

    Mecury BlackMax 175Hp, Constant Beep and Overheating

    You are correct, the Tell Tales takes about 1-2 minutes before the start to pee. May be I just have a bad sensor, which I will look into next...
  17. R

    Mecury BlackMax 175Hp, Constant Beep and Overheating

    Hi Duke, Yes I replace the whol impeller kit, inlcuidng housing. It pumps water fine and strong, the water is not boiling, but hot enough for you not to keep you hand for too long under the tell tail, is that normal? Because on other 4 stroke engines I notice the water is much cooler. The Alarm...
  18. R

    Mecury BlackMax 175Hp, Constant Beep and Overheating

  19. R

    Mecury BlackMax 175Hp, Constant Beep and Overheating

    Hi Scott, yes the old impeller was in 1 piece and in good condition, a but hard, but no pices missing from it, but I replaced it away. It is a V6 175Hps 2.5 Litre. The water comming from the tell tail is reasonably hot, and the heads covers heat up. I will check the sensor, can you please point...
  20. R

    Mecury BlackMax 175Hp, Constant Beep and Overheating

    Hi Chris/Team, I have now replaced the following with new parts; poppet valve, thermostats, impeller (water pump). I also took off both Heads, inspected and cleaned the water passage ways. I have checked the new thermostats and placed them in boiling water, and the slowly open up. The head...
Top