engine stalls at wot

[baja32]

Can saturated or sticky(sticking to bottom of bowl so as to allow gas constantly into the bowl) floats cause my engine to stall at wot???

Thanks in advance.

 

[j_martin]

Re: engine stalls at wot

Can saturated or sticky(sticking to bottom of bowl so as to allow gas constantly into the bowl) floats cause my engine to stall at wot???

Thanks in advance.[/QUOTE

You'd have gas washing out of your cowl at idle if that were true.

Most likely you have a fuel delivery problem, starving it at WOT. It is probably the most frequent cause of these big engines burning down.

It could be, (based on experience)
Fuel filter
Bad fuel lines
Aftermarket fuel lines
Plugged fuel pickup screen in tank
Chit in tank
air leaks in fuel lines
fuel pump wrong parts
fuel pump bad parts
fuel pump pulse hose wrong material
bad fuel bayonet connector
after market but otherwise good fuel bayonet connector.

I would rig a fuel pressure gauge and dog it till I figured out the problem. I would not run it like that.

It would help your helpers to know exactly what engine you have, a V6, or a Tower.

 

[baja32]

Re: engine stalls at wot

It is a V6, I do have gas leaking heavily at idle. I have rebuilt fuel pump, replaced fuel line from tank to pump, replaced fuel lines from pump to carbs, replaced inline fuel filters. I cleaned and rebuilt carbs however I did not replace the floats. I am going to take them apart this weekend and reclean while I find some floats to put in. This leaves debris in the tank and or clogged intake screen on tank. After I rebuild carbs I am going to run the boat on an smaller gas tank to rule my gas tank as the culprit. Thanks

 

[j_martin]

Re: engine stalls at wot

It is a V6, I do have gas leaking heavily at idle. I have rebuilt fuel pump, replaced fuel line from tank to pump, replaced fuel lines from pump to carbs, replaced inline fuel filters. I cleaned and rebuilt carbs however I did not replace the floats. I am going to take them apart this weekend and reclean while I find some floats to put in. This leaves debris in the tank and or clogged intake screen on tank. After I rebuild carbs I am going to run the boat on an smaller gas tank to rule my gas tank as the culprit. Thanks

Did you replace the fuel line and primer with a stock line, or an aftermarket line.

Attwood and others just will not deliver the fuel needed by this engine at WOT.

 

[baja32]

Re: engine stalls at wot

The problem presented itself while it still had the stock (merc) line and bulb on. I haven't gone to test at sea since the carbs leaked like a faucet. I have replaced the line after the whole stalling issue with an attwood aftermarket but like i said I havent tested it in water, just on muffs when I saw the huge leaks.

Are attwood lines really that ****ty??? Would it be just the bulb's check valves that dont allow enough fuel flow???

Thanks for the consult