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  1. M

    Volvo Penta AQ131D getting hot

    What would be the symptoms for that? Miss firing?
  2. M

    Volvo AQ131D cruising speed

    So I took the boat out today and it is running about 20mph on my gps at 3800 and maxed out at 31 at about 5000. It will stay on plane down to 3000 but it is starting to come down and push a little. At 3400 it is on plane good. 3800 is over 1000rpm below max so I would think that is a good...
  3. M

    Volvo Penta AQ131D getting hot

    Ok I got it. Thanks. I took the boat out today and my IR would not work. I left the batteries in it for the last year and they corroded up and it will not work. I had the cover off the engine and I put the boat on plane for about 15 minutes alternating from 3200 to 4700 rpm to get it at maximum...
  4. M

    Volvo AQ131D cruising speed

    Thanks guys. I like the 1/3 rule. I did find a chart that showed the 3.0L at 5.3GPH at 3000rpm. My boat is about 2000lbs with fuel, the wife and I and gear I think 3000lbs is good. My 131 is tuned correctly with a single carb, stock prop. I'm going to use 4GPH for planning and use the 1/3 rule...
  5. M

    Volvo AQ131D cruising speed

    One other thing I was wondering about is fuel usage. My boat has a 20 gallon tank and around our small lake at home fuel isn't a big deal, if I'm low I can run to the marina or take gas can down to the station. So I guess my question is if I'm cruising up the coast of lake Michigan, how long...
  6. M

    Volvo AQ131D cruising speed

    Ok on our small lake it will get up on plane quickly and I can back it down to about 2000 and keep it on plane. I’m going to take it out today I will see what the speed is at the different rpm levels. Another question the service manual says to retorque head bolts on these engines at certain...
  7. M

    Volvo Penta AQ131D getting hot

    Sorry what is the suspension fork? I’m an auto technician not a boat technician so sorry if that is a dumb question.
  8. M

    Volvo Penta AQ131D getting hot

    I’m ordering a new outdrive pickup and going to change that to get rid of all the corrosion. I’m also ordering a new billows kit and changing all of them. I’m guessing at the 200 to 205 temp because the temp gauge is not real precise. I will run it today and check the temps with IR and report...
  9. M

    Volvo AQ131D cruising speed

    What rpm would you guys recommend for sustained engine RPM for an old 131? I live on a small lake only a mile long and I have only ran the engine at 4500 rpm for maybe 15 minutes at a time. We are going out to Lake Michigan this weekend and will be traveling miles at a time. The manual says to...
  10. M

    Volvo Penta AQ131D getting hot

    Also after removing the trailering device and moving the rod to the middle position the outdrive locks down as it should.
  11. M

    Volvo Penta AQ131D getting hot

    I wanted to let you guys know my overheating issue is solved. I put in a new impeller and cleaned around the pickup hose to outdrive. I have had the boat in the water for the last 6 weeks without issues. Can run it at 4500 rpm’s all the way across the lake and it only hits 200-205 F. It was...
  12. M

    Volvo Penta AQ131D getting hot

    I did remove the trailering device and the trim is all the way down. I fixed threaded contact pad and it is not touching the release rod that releases the lock when you lift the drive. The lock mechanism just is not coming up enough to lock the drive down. I have looked at the service manual...
  13. M

    Volvo Penta AQ131D getting hot

    So, I got everything back together and I plan to put it in the water tomorrow. I'm still having an issue with the drive locking down. If I put it in the down position, I can still lift up on it and it starts to catch then lifts up. If I push the lock mechanism up it locks in and stays locked...
  14. M

    Volvo Penta AQ131D getting hot

    Just when I was getting ready to call it a night I found this piece on the ground. I think it is supposed to be attached to the rod that lifts the drive. Is that correct? I can’t see where else it would go.
  15. M

    Volvo Penta AQ131D getting hot

    I had another question about the reverse lock. I noticed in the water when I put it in reverse the drive wasn’t locked and jumped up. So I just put the drive down and put it in reverse and it is not locking in. It looks like the support rod that holds the drive up in transport is in the way. I’m...
  16. M

    Volvo Penta AQ131D getting hot

    I did find another issue my exhaust bellows has a tear in it so I got to replace that. I don’t think this would have anything to do with the heat issue, would it?
  17. M

    Volvo Penta AQ131D getting hot

    So I got around to working on the boat tonight. The pickup hose connection was corroded so I cleaned it up and reconnected it. It could have been sucking air as the bottom was corroded bad. It had enough of a lip left to connect the hose.
  18. M

    Volvo Penta AQ131D getting hot

    Thanks for the great info. I’m going to replace the impeller, remove and clean the hose connection and install the clear line this weekend and put it back in the water. If I get air bubbles I will do the lower gear housing.
  19. M

    Volvo Penta AQ131D getting hot

  20. M

    Volvo Penta AQ131D getting hot

    Ok thanks. It is easy to change. I’ll see if I can get one.
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