--1997 Caravelle 1900BR--
3.0L Volvo Penta GS SX Cobra Outdrive
Engine Hours: approx. 75
Hello All,
The first outing on the boat it blew a circulation hose (runs from thermostat housing to circulating pump on block). The hose blew when I turned the engine off. Everyone told me that I had excess exhaust pressure. So I replaced the thermostat, cleaned the riser, blew through the manifold, replaced hose. I let the engine run today for approx. thirty minutes at diff. rpms, periodically checking the hoses.
The circulating hose for sure had pressure on it, I could squeeze in on it, but the hose would only compress approx. 1/4 in. The hose running from the thermostat housing to the riser had about the same compression. The small L-shaped line that runs from the thermostat housing to the manifold has no pressure at all on it, I could compress it all the way together. When I turn the engine off, immediately all the hoses are easy to squeeze together, have no pressure on them at all.
Does all of the above sound normal? Is this about the correct pressure?
I did notice that after the engine was shut-off I could hear water circulating, this went on for about 30 seconds, or until the thermostat closed (or this is what I thought it sounded like happened).
Also at idle the majority of water dumps out between transom and unit, a small stream runs out of the exhaust ports (directly above lower unit). Is this also correct? Should no water come out of the prop?
The raw water pump works flawlessly when the engine is running, but when I shut the engine down (with the water from garden hose still running) there is a small drip, (about once every 30 seconds) coming from the bottom of the pump. Is this some kind of pressure let off?
This is my first time owning a Volvo Penta and its taking a little while getting everything figured out.
Thanks in Advance!
3.0L Volvo Penta GS SX Cobra Outdrive
Engine Hours: approx. 75
Hello All,
The first outing on the boat it blew a circulation hose (runs from thermostat housing to circulating pump on block). The hose blew when I turned the engine off. Everyone told me that I had excess exhaust pressure. So I replaced the thermostat, cleaned the riser, blew through the manifold, replaced hose. I let the engine run today for approx. thirty minutes at diff. rpms, periodically checking the hoses.
The circulating hose for sure had pressure on it, I could squeeze in on it, but the hose would only compress approx. 1/4 in. The hose running from the thermostat housing to the riser had about the same compression. The small L-shaped line that runs from the thermostat housing to the manifold has no pressure at all on it, I could compress it all the way together. When I turn the engine off, immediately all the hoses are easy to squeeze together, have no pressure on them at all.
Does all of the above sound normal? Is this about the correct pressure?
I did notice that after the engine was shut-off I could hear water circulating, this went on for about 30 seconds, or until the thermostat closed (or this is what I thought it sounded like happened).
Also at idle the majority of water dumps out between transom and unit, a small stream runs out of the exhaust ports (directly above lower unit). Is this also correct? Should no water come out of the prop?
The raw water pump works flawlessly when the engine is running, but when I shut the engine down (with the water from garden hose still running) there is a small drip, (about once every 30 seconds) coming from the bottom of the pump. Is this some kind of pressure let off?
This is my first time owning a Volvo Penta and its taking a little while getting everything figured out.
Thanks in Advance!
