How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Steve Your Own Question
Steve
Steve, Motorcycle Mechanic
Category: Motorcycle
Satisfied Customers: 6986
Experience:  30+ yrs. experience, MMI, HD technician, HD early, engine rebuild/performance, bike builder, kit bike program manager, CCI 2001-2004
11090168
Type Your Motorcycle Question Here...
Steve is online now
A new question is answered every 9 seconds

003 soft tail springer, misfiring runs rough at all RPM. I

Customer Question

003 soft tail springer, misfiring runs rough at all RPM. I have a new fuel pump, fuel injectors,fuel check valve, new intake to head gaskets,new CKP sensor, fresh fuel. This bike has set for 2 years until now.
JA: Are you certain it's the fuel pressure sensor that's in need of attention? What about the fuel rail? Have you checked it yet?
Customer: I do not have a fuel pressure connector to check pressure with. The connector to connect to the check valve to fuel rail tube.
JA: What is the model/year of your motorcycle?
Customer: 2003 Harley soft tail springer.
JA: Are you fixing your bike yourself? What have you tried so far?
Customer: Yes, I have installed all the items above.
JA: Anything else you want the mechanic to know before I connect you?
Customer: It will run rough at idle and cutouts when accelerating, so bad I can not get out of the driveway.
Submitted: 3 months ago.
Category: Motorcycle
Expert:  Steve replied 3 months ago.

you need to know if the fuel pressure is correct before doing anything else.

you could have a shop check it for you. it's a quick test and not expensive. it's very likely your fuel filter is clogged with old fuel.

I would also add SEAFOAM to the gas. it will clean out your fuel system. it's not an instant fix, but the engine will get better with time. it depends on how patient you are.

let me know if you need more help.

Steve

Customer: replied 3 months ago.
I installed a new fuel filter when I put the fuel pump in.
Expert:  Steve replied 3 months ago.

you need to know if the fuel pressure is correct before doing anything else.

you could have a shop check it for you. it's a quick test and not expensive.

I would also add SEAFOAM to the gas. it will clean out your fuel system. it's not an instant fix, but the engine will get better with time. it depends on how patient you are.

let me know if you need more help.

Steve

Related Motorcycle Questions