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Found 2 results

  1. 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) and then going WOT to get up to cruise (25 mph), we settled in. About 5 minutes later, temps rise to ~200 -210. I shut the engine down immediately and call the lake patrol for a tow back to the marina. At that moment, water pump housing was cold, no leaks, riser/elbows warm, but could easily hold hands on them for as long as I cared to. Back at the marina, I start to trouble shoot. First thing is a new impeller. Old one going on 3rd season. Not "bad", no missing fins, some minor cracking at the base of a few fins. After install, idle for 10 minutes - solid temp (170), cold pump housing, cold hose to thermo housing, risers are easy to touch. Rev to 3000 rpm and temp begins to rise - shut down. Second - ensure temp sensor connections are firm (I believe that's what they are) on back of both risers, both sides of the block at the drains, and at the thermo housing. Go through same test routine. Same results. I notice that the port riser cools a bit under high rpm (more water flushing through?) and that it is definitely cooler to the touch than the starboard riser - though both are easily touchable (for as long as I care to touch) as I see the temp rise. Are the two risers typically the same temp? Seems like they should be. I don't have an IR thermometer, but there was definitely a difference. 2 questions: Does this sound like clogged manifolds/risers (or perhaps just the starboard)?How does the temp gauge work? Are all 5 of those sensors I described actually temp sensors? Or is the temp sensor somewhere else? Do they feed a common circuit that then takes the "highest" reading and that's what shows on the temp gauge? Or?I don't think it's the thermo - the engine idles no problem for extended periods and maintains 170-175 degrees - though I could easily replace it (which I didn't do yet). Clogged PS cooler maybe - read a post about that, but symptoms aren't an exact match? Our boat is 2.5 hours away, so I'm not really able to do any more trouble shooting. But from what I've read, 10 years is a fairly predictable replacement range for fresh water operation. I'm considering purchasing manifolds/risers and just "throwing parts at the problem" DIY - seems doable except for potentially rusted mounting bolts. The boat is up a 8000 foot mountain, so pulling it down to a VP mechanic and back up isn't trivial (or free), which adds to my thought of just replacing the risers/manifolds and seeing if the problem is solved. What would you do? Appreciate any thoughts.
  2. 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) and then going WOT to get up to cruise (25 mph), we settled in. About 5 minutes later, temps rise to ~200 -210. I shut the engine down immediately and call the lake patrol for a tow back to the marina. At that moment, water pump housing was cold, no leaks, riser/elbows warm, but could easily hold hands on them for as long as I cared to. Back at the marina, I start to trouble shoot. First thing is a new impeller. Old one going on 3rd season. Not "bad", no missing fins, some minor cracking at the base of a few fins. After install, idle for 10 minutes - solid temp (170), cold pump housing, cold hose to thermo housing, risers are easy to touch. Rev to 3000 rpm and temp begins to rise - shut down. Second - ensure temp sensor connections are firm (I believe that's what they are) on back of both risers, both sides of the block at the drains, and at the thermo housing. Go through same test routine. Same results. I notice that the port riser cools a bit under high rpm (more water flushing through?) and that it is definitely cooler to the touch than the starboard riser - though both are easily touchable (for as long as I care to touch) as I see the temp rise. Are the two risers typically the same temp? Seems like they should be. I don't have an IR thermometer, but there was definitely a difference. 2 questions: Does this sound like clogged manifolds/risers (or perhaps just the starboard)?How does the temp gauge work? Are all 5 of those sensors I described actually temp sensors? Or is the temp sensor somewhere else? Do they feed a common circuit that then takes the "highest" reading and that's what shows on the temp gauge? Or?I don't think it's the thermo - the engine idles no problem for extended periods and maintains 170-175 degrees - though I could easily replace it (which I didn't do yet). Clogged PS cooler maybe - read a post about that, but symptoms aren't an exact match? Our boat is 2.5 hours away, so I'm not really able to do any more trouble shooting. But from what I've read, 10 years is a fairly predictable replacement range for fresh water operation. I'm considering purchasing manifolds/risers and just "throwing parts at the problem" DIY - seems doable except for potentially rusted mounting bolts. The boat is up a 8000 foot mountain, so pulling it down to a VP mechanic and back up isn't trivial (or free), which adds to my thought of just replacing the risers/manifolds and seeing if the problem is solved. What would you do? Appreciate any thoughts.
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