Startup problems after running.

[kmswiber]

I have a 2003 VMAX 200 - VX200TLRB. I recently installed new fuel line, primer (Yamaha), and a water/fuel separator (Yamaha), and I started having this problem shortly after...

The motor starts fine at first, runs great, but after a run and fishing a spot for 30+ minutes I have startup problems. The motor cranks but doesn't start up. It sounds like it isn't getting fuel. I tried priming it, but it doesn't help much. The motor will evening start after 5 (or more) attempts.

After the problem started, I changed the spark plugs, didn't help.

Any help would be appreciated.

[robert graham]

Maybe an air leak somewhere in the fuel lines that you just replaced?...there is an O-ring in that quick disconnect on front of cowling that might be leaking. Your new primer bulb should be installed with the arrow towards the motor indicating the flow.

[fairdeal]

Maybe an air leak somewhere in the fuel lines that you just replaced?...

include in your checking, all four of the ports on that fuel/water seperator...

[99yam40]

sounds like there is a over rich condition, possibly from fuel vapor in the intake, have you tried to raise the idle control lever a little to get more air into the motor during these conditions of hard to start.

Yamaha does recommends idling for a little bit after a hard run to help cool off the motor some before shutting it off.

[kmswiber]

I double-check all of my fuel lines. Everything to the filter was teflon'd. The line ends are push completely on and clamped properly.

I don't have a idle control lever on my console, it is just a throttle.

Anything else I could check? I read somewhere else this could related to a low pressure fuel pump. Is that possible?

Thanks again for the help.

[99yam40]

Does it have the button you push in on throttle lever to advance the throttle without putting it in gear?

[kmswiber]

Does it have the button you push in on throttle lever to advance the throttle without putting it in gear?

No. Only a trim/tilt switch. Here's the throttle lever...I have a hotfoot too.

2003 VX200TLRB Yamaha Outboard REMOTE CONTROL ASSY Diagram and Parts

[kmswiber]

Ran it today. Still having the same issues...tried squeezing the ball before starting, no good. Could it be my low pressure fuel pumps?

[rodbolt17]

ok
fuggit about the primer and lines.
the VST holds enough fuel to run at idle for many minutes.

could a lift pump be causing hot restart issues?
yep,especially if it smokes like a mad dog on a hot restart.

also a bad battery cable/connection can cause a hard hot restart.

if the VST vent system is allowing vapors into the intake at hot shut down it will cause a hard hot restart.

a quick way to tell if its an over rich condition is press the hot foot just a bit and try starting it.
press to far and it shuts off the injectors(flood clear mode).

to much pressure on the fuel rail,or to little, will cause a hard hot restart.

[kmswiber]

I appreciate your help.

What is a lift pump? Is it this:

6E5-24410-03-00 YAMAHA FUEL PUMP ASY ?

Is there anyway for me to test it?

The battery tested good, I double-checked the cables/connections today.

[kmswiber]

When I replaced my fuel line, I changed out the yamaha high pressure fuel line that's in inside the motor (connects straight to fuel filter) with typical alcohol resistant fuel line.

Is there a difference between these 2 lines that could cause this?

This is the hose yamaha uses inside the motor:

90445-13M17-00 YAMAHA HOSE

[TownsendsFJR1300]

I appreciate your help.

What is a lift pump? Is it this:

6E5-24410-03-00 YAMAHA FUEL PUMP ASY ?

Is there anyway for me to test it?

Its in your shop manual how to test the lift pumps with a vacuum gauge.

[kmswiber]

Thanks will look into it...you don't think the fuel line I mentioned could be a problem?

[kmswiber]

I took off the bottom lpfp, squeeze the primer, nothing came out...i pull out the top one, squeezed the primer and gas came out the middle of the back side. Should I replace it?

[99yam40]

If it is coming out of the pulse port that means the diaphragm is leaking.
I would replace both if one is bad