Horn Buzzer overheating horn sounds on turn

[Pirate56]

Due to orthodonists bills been boatless for 2 years. My buddy & I just aquired garage kept 89 Aquasport with Johnson 89 110, disconnected VRO and put in new water pump and themostats. Had more salt water use than expected. Motor ran fine first time out water was rough no WOT. 2nd time out ran fine till WOT or almost and made a left easy turn motor trimmed down and buzzer sounded again. Stopped restarted fast idled till buzzer quit ran fine then it did it again WOT or almost and turned left again. Semi pro bass fisherman/mechanic helped me do w/p and themos. Very difficult to reninstall thermos and springs Appeciate your help...

 

[OBJ]

Re: Horn Buzzer overheating horn sounds on turn

Hello pirate. Just a guess here but it sounds like the engine is setting a tad high on the transom. When you go into a turn, you lift one pickup out of the water and the water is being channeled away from the inside pickup. Does it do that in a right turn?

 

[Pirate56]

Re: Horn Buzzer overheating horn sounds on turn

OBJ thanks for your input. Added some more info, motor was trimmed down. Been working on boat and motor for a month. Big believer in preventative maitanence. Being on the water is my therapy do not want more stress. Only tested boat once b4 purchase. Installed a water separator(did not have) and a new fuel filter in motor. May need to run again, noticed Lg public lake was recently treated for hydrilla etc. Hopefully did not damage motor. Ckecked plugs (3 were a little dry) ck'd compression (OK)

 

[rickdb1boat]

Re: Horn Buzzer overheating horn sounds on turn

You need to find out if it's truly overheating by taking the head temp. when the horn goes off. Either with a thermomelt stick or the old fashioned way of touching the head and seeing if you can hold your finger there for a few seconds without getting burned. If you can't touch it for a second or two without pulling your finger away, it's hot. Also, check your water intakes for obstructions. OBJ sounds like he's got you heading in the right direction with the water pick-up problem, but just trying to cover all the bases. Where is the cavitation plate in relation to the bottom of the hull??<br /><br />

 

[Pirate56]

Re: Horn Buzzer overheating horn sounds on turn

Thanks Rick will ck, possably had motor trimmed to far down to keep bow down (wives in seat in front of console) not used to boat at all if motor was trimmed to far down and upon turning would it cause the problem??

 

[OBJ]

Re: Horn Buzzer overheating horn sounds on turn

Actually pirate, having the motor trimmed down in a turn is what you want. Trimmed up, the prop would be very pron to cavitate for the same reasons as I suggested for the water pick ups. You don't want to go into a hard turn and have the prop cavitate, could make the boat real squirrelly.<br /><br />Keep us posted....thanks.