Loss of Gas Under WOT

cassidyta · 10-12-10, 04:21 PM

I have been having a weird issue the past couple of times on the water. The boat starts just fine and can idle all day. Once I leave the no wake zone, I can go for about 3-4 minutes before the engine dies. I have to use the primer ball to get it going. It starts right back up without any issue. I usually only have to do it once, but yesterday I had to do it 4 times.
The tanks are vented prperly and I don't see anything that would clog it. My google searches make me think that it might be a fuel pump issue.

It is an 85 Merc.

Any suggestions?

carolina-rig-01 · 10-12-10, 07:21 PM

Sounds like it has been run without oil before lol. Seriously I had a similiar issue with the Optimax on the Ranger I traded off this year. It ended up being a bad primer bulb. Then check valve in it was bad and letting the motor suck air. May not be your problem but it's probably the cheapest place to start.

triglet · 10-14-10, 02:36 AM

Carolina beat me to it. that's where i would start. sounds like its losing it's prime!

twigass · 10-14-10, 07:12 AM

After you check that start checking all the hoses esp. By the clams they dry rot and start sucking air there too then third and final option is to get a fuel pump. Is it a inline 6 if so I prolly have a pump for it and a set of carbs. But check the hoses.

10-12-10, 04:21 PM	#1
cassidyta BassFishin.Com Super Veteran Join Date: Jul 2008 Location: San Diego, CA Posts: 2,928	Loss of Gas Under WOT I have been having a weird issue the past couple of times on the water. The boat starts just fine and can idle all day. Once I leave the no wake zone, I can go for about 3-4 minutes before the engine dies. I have to use the primer ball to get it going. It starts right back up without any issue. I usually only have to do it once, but yesterday I had to do it 4 times. The tanks are vented prperly and I don't see anything that would clog it. My google searches make me think that it might be a fuel pump issue. It is an 85 Merc. Any suggestions? __________________ If you have ever wondered if you should retie, the answer is yes.

10-12-10, 07:21 PM	#2
carolina-rig-01 BassFishin.Com Premier Elite Join Date: Feb 2006 Location: Webb City, MO Posts: 6,387	Sounds like it has been run without oil before lol. Seriously I had a similiar issue with the Optimax on the Ranger I traded off this year. It ended up being a bad primer bulb. Then check valve in it was bad and letting the motor suck air. May not be your problem but it's probably the cheapest place to start. __________________ You only live once. But if you do it right, once is enough.

10-14-10, 02:36 AM	#3
triglet BassFishin.Com Member Join Date: Apr 2010 Posts: 39	Carolina beat me to it. that's where i would start. sounds like its losing it's prime!

10-14-10, 07:12 AM	#4
twigass BassFishin.Com Member Join Date: Jul 2007 Posts: 98	After you check that start checking all the hoses esp. By the clams they dry rot and start sucking air there too then third and final option is to get a fuel pump. Is it a inline 6 if so I prolly have a pump for it and a set of carbs. But check the hoses.

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