"Hello all. For the past sever
"Hello all. For the past several months, I've been restoring a 1985 Charger Foxfire with a 1988 Mercury 150 XR4 on it. I finally had a chance to get it out on the water today (for the first time), and ran into some problems. I have done the following to this motor to date:
• Replaced water pump.
• Rebuilt fuel pump.
• Replaced the oil lines.
• Replaced 1 switch box.
• Drained and replaced lower unit oil.
When I got her out on the water, I ran into some trouble. The motor starts fine, and idles beautifully. The boat comes out of the hole quickly, and rides great. The problem begins when I get her going past about 1/4 throttle. Once on plane, and at about 1/4 throttle, it runs perfectly and purrs like a kitten.
Once I push it to about 1/2 throttle, the throttle control/housing starts intermittently beeping beep - beep - beeeeep - beep, and the motor begins to run rough. There is no pattern to the beeping, but it doesn't stop. The motor itself stops running smoothly at about 1/2 throttle, and the prop in the water starts to make a "garble" sound, like the prop is not running in clean water. The further I push the throttle, the higher the RPM's go, but the boat does not pick-up any speed. It just runs really rough, and won't go any faster.
I tried giving it gas around a corner to see if cavitation was the problem, but it didn't change anything. I'm really at a loss as to what the problem might be. Can anyone out there help me figure this out? Thanks so much ac."
"Hello all. For the past several months, I've been restoring a 1985 Charger Foxfire with a 1988 Mercury 150 XR4 on it. I finally had a chance to get it out on the water today (for the first time), and ran into some problems. I have done the following to this motor to date:
• Replaced water pump.
• Rebuilt fuel pump.
• Replaced the oil lines.
• Replaced 1 switch box.
• Drained and replaced lower unit oil.
When I got her out on the water, I ran into some trouble. The motor starts fine, and idles beautifully. The boat comes out of the hole quickly, and rides great. The problem begins when I get her going past about 1/4 throttle. Once on plane, and at about 1/4 throttle, it runs perfectly and purrs like a kitten.
Once I push it to about 1/2 throttle, the throttle control/housing starts intermittently beeping beep - beep - beeeeep - beep, and the motor begins to run rough. There is no pattern to the beeping, but it doesn't stop. The motor itself stops running smoothly at about 1/2 throttle, and the prop in the water starts to make a "garble" sound, like the prop is not running in clean water. The further I push the throttle, the higher the RPM's go, but the boat does not pick-up any speed. It just runs really rough, and won't go any faster.
I tried giving it gas around a corner to see if cavitation was the problem, but it didn't change anything. I'm really at a loss as to what the problem might be. Can anyone out there help me figure this out? Thanks so much ac."