Yamaha 1999 S225TXRX
Explain to me how the telltale works and what it shows.
Here is the situation. I've always had real good pressure from the telltale when it's running and also when hooked up to the hose flushing adapter on the cowling. Last week, I noticed very low pressure from the telltale while flushing it. I increased pressure from the hose, and still weak telltale stream.
Took the boat out fishing the next day, weak telltale stream when running also, maybe half of what it usually is. Ran it hard also, 4500-5000, not all day but for periods of 5-15 minutes throughout the day, never overheated.
Followed the hose from the nipple where it exits the cowling up to an area near a fuse box. Pulled the hose off there and blew through it, didn't appear to be clogged at all. Re-connected. I will try next disconnecting the hose from the nipple at the cowling exit and see how much pressure is actually coming out of the hose while running.
The water pump, t-stats and PCV have roughly 60 hours on them. Since there is weak pressure when running AND just flushing, would that rule out a water pump, t-stat or PCV problem? If I get weak flow from that hose at the nipple exit, what next?
Explain to me how the telltale works and what it shows.
Here is the situation. I've always had real good pressure from the telltale when it's running and also when hooked up to the hose flushing adapter on the cowling. Last week, I noticed very low pressure from the telltale while flushing it. I increased pressure from the hose, and still weak telltale stream.
Took the boat out fishing the next day, weak telltale stream when running also, maybe half of what it usually is. Ran it hard also, 4500-5000, not all day but for periods of 5-15 minutes throughout the day, never overheated.
Followed the hose from the nipple where it exits the cowling up to an area near a fuse box. Pulled the hose off there and blew through it, didn't appear to be clogged at all. Re-connected. I will try next disconnecting the hose from the nipple at the cowling exit and see how much pressure is actually coming out of the hose while running.
The water pump, t-stats and PCV have roughly 60 hours on them. Since there is weak pressure when running AND just flushing, would that rule out a water pump, t-stat or PCV problem? If I get weak flow from that hose at the nipple exit, what next?
