Boat runs great for under a minute, and dies....( I'm lost )

[The motor guy]

Originally Posted by DriveHard
Originally Posted by RogerBacon
Could it be a vent issue on the tanks. If air can not get in, fuel can not get out.


This is my vote...the vents allowing air back into the tank are plugged. Try leaving the gas cap off and see if the problem is resolved.



I have this issue on my boat. The idle will slowly get lower and lower after a few minutes. Did a rebuild on the carb and the idle jets were clogged. Haven't put It back on yet though, bit I'm betting that was the issue.

 

[leroyd92]

So I looked up the specs of my Marine mechanical pump at work.

40 gph at 1000 rpm. 6 to 7 psi
50 gph at 3000 rpm 8 to 9 psi

And it gave me a pump rating at 60 rpm for a prime situation.

I don't trust any electric pump to perform like that for me. Especially when I factor in dependability. The boat sits for 5 months at a time.

This weekend I'm putting the new cap, rotor, spark plugs, wires, and putting my m22070 pump back on it ( the special version of the reclockable Carter SBC pumps)


I'll keep you all posted.

 

[leroyd92]

My carbureted truck had an issue where over the course of 4 minutes, the idle would get slower and it would run rougher until it dies.

The float needle had a small amount of slime on it, and it would slowly over fill until it flooded the motor.

I took a brown paper towel, scrubbed it, and it never happened again.

That was 3 years ago. Issue never came back

 

[leroyd92]

Here's the standard clockable small block Chevy fuel pumps through the Precision. I believe ImportDirect uses the same number system. At least for majority of electric and mechanical pumps.

I just feel my electric pump will cause issues, either immediately or down the road.