Performance Boats Forum banner

overheating

  1. 350 Mag MPI Overheating

    Bob Teague
    Have a 2006 Crownline 225 LPX with a 350 mag, captains call, with Bravo 1 with the 2 point quick drain that is overheating at idle. Have replaced the thermostat, impeller, engine water pump and finally the whole raw water pump. Starts up, temp rises to 180 and all seems fine. After a minute or...
  2. Low/no water pressure. Overheating

    Jet Boats
    Kinda stumped. Jet boat is overheating. Not getting alot of water pressure if any out of pump to engine. Pulled lines. Flushed everything out. Looked into pump housing outlet and it looks clean. Intake area looks clean as well. Back flushed everything. Still not getting water to the block. No...
  3. Overheating problem-more challenging than usual

    GN7 On the Dyno
    i have whipple supercharged 598 in my single engine cat. it has a single teague adjustable bottom pick up, hardin sea strainer, and hardin dual stage water pump. if water is sucked from a hose connected to the bottom pick up and a 5 gallon bucket, the engine will slowly heat up climbing to...
  4. Overheating and now blowing smoke...

    GN7 On the Dyno
    Towards the end of last summer I noticed that my temp gauge was almost instantly pegging past the 250 degree mark.. I felt the exhaust logs and they were cool, hoses all felt cold so at that time (in my infinite wisdom) I figured I lost a ground wire or something and was getting a false...
  5. overheating issue

    Jet Boats
    I have a 1973 Anthony's chaparral with a Oldsmobile 455 high performance. I just got this boat and wanted to run it on the trailer. So I hooked up the water hose to it and let the water come out the exhaust before I fired it up. I let it run maybe 5 minutes then it started to die. I looked at...
  6. [Question] 1992 175 Evinrude Overheating

    Outboards
    I'll preface this with "I'm a jet and v-drive guy..." Got a 1992 Evinrude 175 v6 on the pontoon. The motor got hot on the starboard side last time out. Replaced the water pump, thermostats and starboard temp sensor. Backflushed the motor thru the thermostat housings and overboard indicator...
  7. Overheating damage? Help?

    Outdrives
    Took the son and his buddy tubing a few days ago behind our Volvo v-6 deck boat (sorry not too fancy or fast). Impeller gave up and temp pinned gage REAL quick. Headed home asap, maybe 1/4 mile on water and a minute and 1/2...but it got hot. Smoke came off all the rubber coupler/connections on...
  8. 350 Mag MPI overheating, not the impeller or t-stat?

    GN7 On the Dyno
    I have an 08 Boat with a Mag 350 MPI, Bravo 3. Boat is serviced regularly (Impeller changed annually). Last year it started doing something odd at the beginning of boating season. Randomly, it would get hot, the alarm would go off because it was getting hot. It never did it before. I had...
  9. Merc Mag 350 random overheating issue.....not the impeller or tstat?

    Outdrives
    wrong forum my bad ops, wrong forum
  10. Overheating.....

    Jet Boats
    I have not been on here in a while.. Starting to get back into Jet Boating. Here is my issue. Boat sat for a bout a year. pulled off Carb did a rebuild. new plugs, new wires. new cap, Runs fine on Garden hose. Took it out to Saguaro this am. idled around while the truck and trailer were...
  11. overheating GM 383 stroker

    GN7 On the Dyno
    new crate gm 383 stroker... volvo penta leg. runs perfect from 700 rpm to 2500-3000 rpm then just builds up heat fast heading from 3000- 4000 rpm... am I not getting water into the system fast enough or is it backing up on its way out? even the water pipe before the crank driven water pump and...
  12. Can a jet cause overheating of the motor????

    Jet Boats
    Here is one for you all, i have a 460 with a Dominator. I have noticed at idle that I have very little flow coming out the dump. at 750 RPM the water isnt enough to make a stream, just barley flows. At 3000 RPM it seems to stream out ok (5" from the bulkhead) and the motor will stay cool. At WOT...
  13. Overheating 2 Engines after hitting sand

    Outdrives
    Hello, I need some advice before I start tearing apart two engines. I was in shallow water and hit sand. I was traveling around 3kts. When I hit. I put both engines in Reverse at about 75% throttle for maybe 2 seconds. I kicked up a crap load of sand but got out. I continued on into deeper...
Top