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Found 9 results

  1. good day, Had a high speed overheat issue.. over heat alarm never sounded but the temp rose quickly.. after inspection for the block there was a head gasket failure.. .. do you feel this was from the overheat or another issue leading up to it.. the engine was serviced regularly and had impeller, water pump and thermostat replaced recently .. see images.. any insight would be appreciated head image.docx
  2. Low, low, was unusually low today... and one of the channels I had to pass had inches below my draft... was going dead slow but I could see the black mud being churned up behind me... a few minutes later when I was back in open water I got a “port engine overheating” alarm. i immediately shut it down and limped back to the marina on one engine. on my way back I opened up a couple of the winterization plugs... and water was flowing out... and the temp dropped... but when i reinserted and tried to run... temp shot back up. i noticed that the coolant pressure was noticeably
  3. I have a 2015 277 that I have been having a number of overheating issues. First the dealer thought it was an impeller, so we replaced it. Then it continued. They thought that maybe the impeller broke apart and some of the pieces clogged the cooling system, so they took the entire cooling system apart. My boat worked fine for 2 months, then last night it overheated again. It is extremely frustrating to have paid over $100,000 for a boat that constantly has to be towed in. Worse than that, our dealer does not offer any towing service to the dealership, so we have to get Seatow to
  4. I'll try to summarize. I have a 2003, 285 ssi with twin Volvo Penta 350's and DP outdrives. Didn't get them properly winterized. Cracked both blocks. ordered 2 new remanufactured engines with new manifolds and circulating pumps. Had new engines professionally installed. Took boat out, and starboard engine alarmed out after about 8 minutes of cruising (idled out fine). Returned to mechanic who went out for ride with me and used temp gun on both engines. Thermostat housing on starboard was 20 degrees hotter than port and engine alarmed again. Mechanic changed out thermostat. Still alarmed af
  5. My engine was overheating at WOT. Then it would start running warm while just running hard. Installed new thermostat, new impeller, and backflushed the system. Still doing it. Installed new manifolds & riser. The old ones didn't look bad enough to be causing the problem. While the engine was accessible, decided to replace all the hoses as a precaution. Problem # 1 was found, the honeycomb engine oiler cooler was partially clogged even after backflushing the system. I took it off & used a straight piece of wire to poke out all the organic debris. Problem # 2 was found by the mechanic, t
  6. Our boat - 2004 220ssi with VP 5.7 Gi, SX outdrive. ~160 hours total time since new. 1 time in salt water 3 years ago (flushed afterwards). The rest all fresh water. I've read several dozen posts here and on other sites, so my apologies for another thread on the topic. Put the boat in the water this weekend for the first time this year and "thought" everything was good to go. Let it idle in the slip for 15 minutes - solid temp of ~170. Smooth throttle. Rev'd in neutral to 3000 rpm for a couple minutes. Steady temp. After taxiing out of the marina and slow speed area (5-7 minutes underway)
  7. Our boat - 2004 220ssi with VP 5.7 Gi, SX outdrive. ~160 hours total time since new. 1 time in salt water 3 years ago (flushed afterwards). The rest all fresh water. I've read several dozen posts here and on other sites, so my apologies for another thread on the topic. Put the boat in the water this weekend for the first time this year and "thought" everything was good to go. Let it idle in the slip for 15 minutes - solid temp of ~170. Smooth throttle. Rev'd in neutral to 3000 rpm for a couple minutes. Steady temp. After taxiing out of the marina and slow speed area (5-7 minutes underway)
  8. Guys, new to this sight, and a new chaparral owner. I was out this morning on Texoma cruising at about 25mph and heard an alarm. One solid beep, and then it stopped. I looked at the gauges and didnt see anything out of order. Then a short time later a second beep, then the port engine died, and i notice the temp was up (190-200). I didnt notice any loss of power prior to the engine stalling. I limped back to the marina on the remaining engine and when I returned, 2hrs later, I tried to start the motor. It would not start. Boat was serviced less than 25 hours ago (oil, impellars, ect). Man
  9. Help! 2006 signature with 5.0 mercruiser bravo III with 500 hours. Overheats above 3000 rpm, I have new risers and manifolds, new impeller. I swapped thermostat housings left to right which included thermostat, temperature sensor and temp switch. Externally inspected transom hose and it looks ok. Please, any ideas??? Thanks Jonathan
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