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I repowered with a pair of brand new Honda 150's about a month ago. I went on 2 test drives with the dealer during install to tweak the mounting and both engines ran perfect for a total of 30-40 minutes. Brought the boat home 1 month ago and just tonight was taking it out for the 1st time. Both engines started immediately and I let them warm up for 2-3 minutes on the trailer. Was idling out to the bay, made it 200-300 yards and the starboard engine began to stumble and died. Tried numerous times to restart and several times it would catch and run for 2-3 seconds, then die again. The port engine ran flawlessly the entire time.
The boat has 1/2 tank of 1 month old gas in each tank, the same gas that was put in for the dealer test drives. The Racors are 3 feet in front of the engines, full of fuel, and had no water in the cup. The primer bulb makes no noise of passing fuel when squeezed repeatedly and won't fill up/get hard. I'm assuming that it is the problem, but I was under the impression that the new engines can draw their own fuel regardless of the primer bulb.
I know that the obvious answer is to call the dealer in the morning, since the engines are new and under warranty, but I don't want to drag the boat 30-40 minutes down the road if its just the primer bulb or something else that is cheap/simple.
Didn't see any check valves, but if you ask my wife, I can be holding something in my hand or looking right at it, and still not know where it is. Would this be a check valve on the engine, near the Racor, or somewhere else entirely? Thanks
the primer bulbs have both inlet and outlet check valves but it could be many things wrong in a fuel sys, have a dealer look at it and ask them to replace both primer bulbs.
__________________ Beware of A1outboards aka Blackbird ind , = Google
You either have a bad fuel primer bulb on the starboard engine (are you making sure you point it in the right direction when pumping it and pointing it to the sky?) or your fuel pick up is clogged. Could also be an air leak in the fuel line but with these being new I doubt it.
are you pointing the primer bulp UP when you squeeze it (arrow points up, thats the outlet to the motor). many times you have to do this to let the air vent and the little check balls seat properly.
E55..........seriously not poking fun or anything, but when you warmed them up for 2-3 minutes on the trailer...........was this backed in the water, running the engines on a hosemuffs or not connected to any water coolingsource.
You do not mention it.......so I have to ask.
Andy
__________________ Andy Munao Our new parts site: www.simyamaha.com Yamaha Outboard Sales, Parts and Service 1-800-213-3323 parts@shipyardisland.com Click the logo to see our THT Vendor Forum
SIM, not sure what you mean by water cooling source. It was in the driveway with nothing attached, could that really hurt it? Aren't they internally cooled like a car? The dealer told me it was a Honda Accord engine, just for a boat.
Just kidding. No offense taken. It was backed down the ramp into the water with the intakes sufficiently submerged, and before anyone else chimes in to scold, there were no other boats wanting to launch/retrieve while I tied up the ramp waiting for them to warm up. As to the posts about the battery connections, there was plenty of power to turn the motor over, just a lack of fuel to keep it running. I was going to try switching the fuel lines, but fogot about it later, so thanks for that suggestion as well.
I was truly unaware that you had to hold the bulb in a certain direction, so I'll go try that one. If that works, I'm going to kick my own a$$ repeatedly, then ask the wife to put on golf spikes and dance on my crotch. I'll keep you posted.
As always, you guys make boat ownership much less of a headache than it otherwise could be. Thanks for the replies and keep them coming if you think of anything else.
Sounds like a fuel restriction at the tank. This is not uncommon. If the primer bulb will not get hard after squeezing it, then your problem lies upstream of it. Most built-in fuel tanks have a federally mandated check valve in the fuel pick-up. These can very easily malfunction.
You could also have some debris covering the fuel pickup in the tank and this will restrict the fuel flow as well.
Check, and replace the wing nuts on the battery terminals with lock nuts.
Plleeaasse
does sound like a fuel issue of some sort, and you are correct once started it should have no use the primer, so my guess maybe an air leak- either on the racor or the bulb connection. The filter does need to be full though or the bulb will suck air but you had it running, maybe grab a straight hose barb and bypass the racor to eliminate that and see if the bulb will pull.
You can check your tank vent easily enough. Unscrew the fuel filler cap and see it the line to that engine will then pump up. If so, blocked vent. I agree with the others though. Sounds like a plugged check valve, pick-up, or kinked line. I don't think an air leak will give you a collapsed primer. I think just the opposite is true. The bulb is trying to pump from a restricted source, that is what makes it collapse.
Also look at the primer bulbs and make sure they are OEM and not some cheep aftermarket junk. Had the same prolem
a couple years ago , I took the aftermarket off and replaced with Yamaha bulbs, problem solved
Leon
Help! Brand new engine won't run. 
= Google 
