V8 alarm full story help!!!

**boby** · 07-11-2016, 09:09 PM

Last week the drive shaft from the lower unit broke....I found an use one for good price .This unit have a nose cone on it. After have putt everything in place i have an alarm (constant bip) when come to plane and the engine have no rev like protect mode ...when return to idle the alarm goes off !! Back home remove the thermostat and return to water same think.

help please !!!!

**racer** · 07-12-2016, 07:27 AM

Sounds like it is going into slow due to overheat. I would start by installing a new OEM water pump kit. You mention low water pick up, what size hose and fittings does it have?

**rude tim** · 07-12-2016, 06:23 PM

Could it be the neutral switch from improper linkage setup?

**boby** · 07-12-2016, 07:00 PM

I install new oem water pump kit today !! Try this tomorrow morning. i found it is hard to put in gear with propeller at the dock but easy without prop in driveway .
is that switch that kill cylinder when put in gear ??

**racer** · 07-12-2016, 07:49 PM

Yes that is the switch Tim is talking about but it will not set off your alarm. Switch is more for getting out of gear. When you installed the kit did you make sure all the o-rings were in and sealed? What part number did you use? Your alarm may be from fuel vaccum but that would not put the engine into slow.

**boby** · 07-12-2016, 10:35 PM

0395062 water pump repair kit from the dealer i give my model number j300plcem....for the switch i don't have problem to put in neutral !

**racer** · 07-13-2016, 09:15 AM

That is the original number but if that is what you were sold it is old stock as that number has been replaced at least 2 times to my memory, 434421 and currently by 5001594. The 5001595 will develop a bit more pressure as it does not have the bleed hole in the housing by the starboard rear bolt, this pump is for what are referred to as split line lower units but works good when a couple pounds of extra pressure are needed on non split line. Of note this is not factory.

**frank jackson** · 07-13-2016, 10:00 AM

Is that pump a good pump for a 6 also ?

**perfmarine1** · 07-13-2016, 10:40 AM

Originally Posted by rude tim

Could it be the neutral switch from improper linkage setup?

No,neutral safety will not let starter crank.

**perfmarine1** · 07-13-2016, 10:43 AM

Originally Posted by boby

I install new oem water pump kit today !! Try this tomorrow morning. i found it is hard to put in gear with propeller at the dock but easy without prop in driveway .
is that switch that kill cylinder when put in gear ??

When shifting with motor NOT running you must turn prop or clutchdog can land on top of teeth and not shift, or motor needs to be running.

**perfmarine1** · 07-13-2016, 10:46 AM

Originally Posted by frank jackson

Is that pump a good pump for a 6 also ?

yes, will work on V6-V4

**boby** · 07-13-2016, 01:23 PM

More pressure on my psi gauge but still the same alarm and I put new thermostats . I am on the way to open side water pick up for more easy flow . It is ok to run both open ?

**racer** · 07-14-2016, 06:38 AM

How much pressure do you have? At different rpm. Verify proper fuel delivery?

**boby** · 07-14-2016, 10:21 PM

Problem solved.....more water pressure around 7 psi at idle ! There more.....I have no rpm gauge last year ( bad rectifier) and I notice that rpm fluctuations around 3000 rpm , 100-150 variations, back home remove plugs and the top one are white and the other one (7) are brown. Last year evinrure dealer clean carburetor . It is normal or not that the first carburetor mist a bleed just above the screw ?