Honda BF 150A wont start

hardee · Posted: Sat May 29, 2021 4:31 am Post subject:

This hasn't been covered yet, and might be a long shot, and I am not a mechanic, but there are 2 things.

ONE, the position of the throttle/gear shifter, (Forward or Reverse). If it is not in the Neutral position it will not start. I think in some cases it will crank, but not fire.

TWO, the position sensor in the shifter handle may not be contacting properly.

I am betting that it is clogged carb jets due to prolonged storage of bad (ethanol containing) gas.

Harvey
SleepyC Moon

Schuster · Posted: Sat May 29, 2021 5:57 pm Post subject: honda 150 wont start

Update.
So, i got some starter fluid and gave it a squirt and got it to fire off. Tried is a few times and same thing, wouldn't stay lit. So It would seem I have a fuel delivery issue. After the few tries I notices that the squeeze bulb was still hard so I don't believe any fuel move thru the system. Not sure where to go from here. Any suggestions out there?

bobjarrard

Just trying to help here:
-- If you have carburetors, 99% that is the issue after 20 months of sitting. If you rebuild, use a DIY video, take each carb apart on cookie sheet to save all the parts, and use an OEM rebuild kit. You will have to sync the carbs when done.
-- If you are EFI/fuel injected, then it is a bit more complicated. The "black box" could be not working, the injector pump could be bad, the injectors could be fouled (not likely), the power to the fuel management system could be under voltage, and it is time to try and read the history and diagnostic codes.
-- Be sure that the oil level is correct as most Honda motors have a low oil sensor that on some of their engines will shut down the engine start/run system.
-- The engine temp monitor can not only set off codes and alarms, it may be able to shut down the engine or not allow it to start.
-- This may be a good time to change out the thermostat.
Hope this helps,
Bob Jarrard PS: feel free to call and visit with me at 714 686-2728

colbysmith · Posted: Sat May 29, 2021 8:26 pm Post subject:

T.R. Bauer · Posted: Sun May 30, 2021 10:39 am Post subject: Re: honda 150 wont start

Schuster · Posted: Mon May 31, 2021 12:38 pm Post subject: honda 150 wont start

I'm at the ragged edge of my mechanical expertise so I think I'm going to pull the injector rail and see if fuel is getting that far and clean the injectors. I'm a little hesitant to take the VST apart and examine the hp pump inside. As far as checking for pressure from hp pump i'm not equipped to do that and don't feel good about probing around with electrical stuff. I've watched a couple videos of it but think I might be better served by a Honda mechanic. I'll be taking it to Toms Outboards in Olympia if the injectors cleaning doesn't work, but it's about a month before they can work on it.

T.R. Bauer · Posted: Mon May 31, 2021 2:04 pm Post subject:

I don't blame you for wanting a mechanic, but you have a month to play with it. I'm just curious, have you ever changed your high pressure fuel filter? I wouldn't be shocked at all if it got all plugged up from goofy chemical reactions during the long storage. It's easy enough to change BTW and if you have never done it - it's probably time. I bet it's gross!

ssobol · Posted: Mon May 31, 2021 2:49 pm Post subject:

T.R. Bauer · Posted: Mon May 31, 2021 6:20 pm Post subject:

cmetzenberg

Grumpy · Posted: Tue Jun 01, 2021 4:58 pm Post subject: BF150

Had a similar story of BF150 refusing to start next morning after a rough passage. Reluctant local Honda mech with computer could find nothing wrong and had no further time for about 1 month.

Boat was in Canada. Suspected the ECU. Honda Canada not very interested in warranty on Honda US engine.

Short story is I flew home to US, collected trailer caught ferry back to boat and hauled it home to my local friendly boat dealer (EQ Marine) where their very pragmatic engine man noted that I had two engines and, using impeccable logic says, "Lets just swap the ECU's from port to stbd and see what happens". Lo and behold, the fault moved, problem solved in 20 mins.

Don't know if it will help but it looks like you have time to try it.

Good luck.

M

Schuster · Posted: Thu Jun 03, 2021 8:25 pm Post subject: Honda BF 150A wont start update.

So talked with the guys at King Salmon Marine in Tacoma about my problems and they gave me advice on a test to check if the hp fuel pump is working. After replacing the hp fuel filter, I removed the bolt in the center of the head that encapsulates the filter. turned the key and nothing happened. I should have got 40 psi of gas shooting out of there. Problem identified. Spent the day removing the VST and remove the HP fuel pump and tested it again on the bench, nothing. It appears to be corroded completely and frozen. Ordering a new pump tomorrow. I looked on line and there are several replacements for under $100.00 when a Honda replacement pump is like $300+. I makes me a little nervous to buy a after market pump with such a large price difference. anybody got a thought on this. Thanks.

srbaum · Posted: Thu Jun 03, 2021 8:32 pm Post subject:

I recently ordered an aftermarket and had nothing but problems. Ordered the OEM and it worked perfectly.

kaelc · Posted: Thu Jun 03, 2021 8:59 pm Post subject:

Glad it has narrowed down! How many hours on your engines? I have the exact same one so need to plan for eventual replacement

srbaum · Posted: Thu Jun 03, 2021 9:15 pm Post subject:

The 150 that I had the issue with, had been sitting for several years. All of the other 150’s that were run frequently, never had this issue, regardless of engine hours.