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  1. Ricky_rich

    Johnson Stinger 70 timing?

    I have recently bought a 1974 Johnson Stinger 70hp. The engine has not been used for about 15 years. Had to clean carbs, replace a coil, and put in new sparkplugs and new coals in starter. Then I got the engine running, but when I was out on the lake the engine felt a bit week. The previous...
  2. Ricky_rich

    Mercury 7.5 cannot suck fuel?

    Looks like we can close this case. I found out that the pulses to the diaphragm don’t come through the little hose. It comes from a hole next to the intake. I took the carb of today to go through everything again. Found out that someone, (me) have put the gasket between intake and carb the...
  3. Ricky_rich

    Mercury 7.5 cannot suck fuel?

    I have a 1980 Mercury 7.5 that I’m having problem with. Engine starts up fine and runs great. But after a few minutes it’s coughing and dies. If I pump the bladder on the hose when that happens, I can keep the engine going. So I thought the diaphragm might be bad. Had the carb apart and cleaned...
  4. Ricky_rich

    Mercury 850 spark problem?

    My brother have a 1977 Mercury 850 that have a spark issue. Checked the spark with a timing light today. Cyl 1 and 3 looks good,, around 800rpm on idle. But cyl 2 and 4 are pending between 1600 or 400 rpm on idle. Either twice or half of actual rpm. Engine is running badly and is really week...
  5. Ricky_rich

    Sea water leaking in by the outdrive. Volvo Penta DP-S

    Boat is a Wellcraft with a Volvo Penta DP-S outdrive, and a Volvo Penta 5.7 engine. I have water leaking in by the transom unit. It’s dripping on the inside from under the inner transom plate. It’s hard to see anything there to spot more exact where the leak is. What would be the most common...
  6. Ricky_rich

    Head to rusty or not? VP 5.7

    I have managed to get another head instead of this rusty one. So now I have two decent heads that will do the job. I live all the way over in Sweden, and the prices for these parts are higher over here. So no Vortec convertion in my budget. One other thing I noticed is that the holes in the head...
  7. Ricky_rich

    Head to rusty or not? VP 5.7

    I recently traded me a couple of restored GM 350 heads. 14096217 Now it turned out that one of the heads are pretty rusty in the water canals. If I use a screwdriver I can scrape of about 1 mm of rusty iron. The guy who restored the head say it’s ok, have been pressure tested. But I have a bad...
  8. Ricky_rich

    Johnson Stinger 75 head torque settings?

    I’m about to put the head back on to my Stinger from 1978. Does someone here know the torque setting, and the sequence to go around? And should it be done in several steps?
  9. Ricky_rich

    Leaking exhaust valve after winter storage??

    I recently bought a boat with a Volvo Penta 5.7GL that had not been used for a year. Now it turns out that an exhaust valve is leaking. Previous owner states that there should not be any kind of problems with the engine. So my question is, can such a problem accour after engine just not beeing...
  10. Ricky_rich

    Johnson Stinger 1978 Powerhead question

    I had water leaking into middle cylinder, so I took exhaust plates and head off. Could not see any obvious leak causes, but I guess there might be one. The cylinders look good and so does the head. So I guess I?ll just put everything back on with new gaskets. Should I use and kind of sealer on...
  11. Ricky_rich

    Volvo Penta 5.7GL runs bad?

    Think I finally found the problem on my engine. From the previous compression test I know that cylinder 6 was a bit lower than the others. So today I did a leak down test on all cylinders. Everyone looked good (around 10%) but number 6 that had a 35% leakage, and a wheezing noise through the out...
  12. Ricky_rich

    Mercury 1150 no spark?

    I have a Merc 1150 from 1970 that have lost the spark. With the ignition on, I have +12V on the red connection. But on the green one that goes to the coil there is nothing. It should be +12V there or?
  13. Ricky_rich

    Volvo Penta 5.7GL runs bad?

    I recently bought a Wellcraft Excel with a Volvo Penta 5.7GL. Have problem with the engine, feels like it?s misfiring or don?t get enough fuel when I?m trying to get the boat up to plane. Lack of power and running uneven . I changed the spark plugs because they were black, with lots of carbon...
  14. Ricky_rich

    ​Power head removal on a 75hp Stinger (1978)

    I have to remove the power head to be able to fix a water leak on the exhaust side. Just wanted to check with you guys here first. To loosen the head I first have to remove the six bolts from underneath the lower cover. And then loosen the four engine brackets. Finally remove the screw to the...
  15. Ricky_rich

    Open exhaust side, Johnson Stinger 1978

    Is it possible to open exhaust side, and check baffle plate and replace gaskets, without taking the power head off? The screws between rig and power head don?t look so good, have a bad feeling about removing them, they might brake?
  16. Ricky_rich

    Johnson Stinger 75 1978, water in one cylinder?

    I have had hard time to start the engine... And when I pulled the plugs I found water I cylinder two. So how do I to find the leak? Someone have a suggestion where the leak usually is located? Or a procedure to find it.
  17. Ricky_rich

    Johnson Stinger 75 no spark?

    I recently bought this 1978 Johnson Stinger 75. The guy I bought it from say it just died on him one day last summer. No spark on any cylinder. I have hooked up the remote box and connected a battery. With the ignition turned on I measure the values in the picture. But what to do next? The...
  18. Ricky_rich

    Mercury 500 that has been running hot!

    I have actually never run the engine, bought it partly taken apart. But crankcase not taken off or apart. The previous owner didn?t fulfill the job, lost interest was the reason he told me, but you can never be sure. So now I have put it back together, and will try to start it someday soon...
  19. Ricky_rich

    Mercury 500 that has been running hot!

    I recently bought this engine, and it appears to be a 67-69 model. The previous owner had left the flush plug out when running the engine. So I guess the engine didn?t get any cooling. After this it lost a lot of power, still running but poorly. I did a compression test, and here is the result...
  20. Ricky_rich

    Hole in baffle plate on Mercury 1150

    What will happen if I run this engine with a small hole in the baffle exhaust plate? Is this really serious and need to be fixed right away?
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