2017 HD5 loose power back fires

[Jeff Alt]

I replaced fuel filter  checked fuel pressure  it is 20psi drops to 0 when shut it off what should it be and should it drop to 0

[Jeff Alt]

Just now, Jeff Alt said:

I replaced fuel filter  checked fuel pressure  it is 20psi drops to 0 when shut it off what should it be and should it drop to 0

2017 HD5 

[Andystoy19]

The fuel pressure should be at 51 psi, +/- 1 psi.🙂

[honda400ex2003]

definitely a fuel pump issue, as andy said spec is 51psi +/- 1.

 

I had 51 while running and about 40 when key on power without running last week when i tested mine.  it shouldnt drop off right away either, mine held for a good bit while testing it.

you might be able to do a rebuild with the $65 kit from BRP otherwise a pump assembly is about $300-350.  I think rocky mountain had the cheapest oem pumps but never ended up buying one.

Check your plugs too while you are at it. $20 for plugs, make sure they are gapped properly. check your air filter and replace.  might as well do the oil in it too LOL

steve

Edited July 11, 2022 by honda400ex2003