2002 F200txra won't go over 5000 rpm

[mokaction]

Thanks for the help in advance.

OK guys, I can't get my F200 over 5000k

1. I have checked fuel pressure on the fly hooking up a fuel pressure gauge to the high pressure fuel rails while cruising at 5000 rpm's and I would get 42 to 44 psi continuous pressure in fuel.
2. fuel is fresh and I have added Sta-Bil Marine to my fuel at every fuel up.
3. fuel injectors have been cleaned and I clean all filters even the one in the VST.
4. I blow out the breather hose to fuel tank.
5. I connected the computer to the engine and it is all clear there too.
6. Idles and runs fine under 5000k
7. never replaced prop, cause it is the same one I have had on this boat since 2003 with no issue. This problem started in Nov 2017. use to be able to get up to 6000 rpm's before Nov, also hard to get into plane.


Any help would be appreciated.

[fairdeal]

Have you had a look at the spark plugs?

and while you are there, leakdown test / compression test might tell you something

[mokaction]

Sparks looked great. I will have to do a compression test this weekend. Rain is in the forecast here in SoCal, thx you Fairdeal for coming back to me.

[99yam40]

need to make sure all injectors are firing also.
timing is easy to check with a light

[mokaction]

need to make sure all injectors are firing also.
timing is easy to check with a light

Won't the YDIS see that???

[99yam40]

probably better chance of him having a light.
as far as injectors firing ECU may tell them to fire, but not sure it cantell it they did what they are told

[mokaction]

probably better chance of him having a light.
as far as injectors firing ECU may tell them to fire, but not sure it cantell it they did what they are told

Cool, I will try, I always thought the clicking sound was the injectors opening..

[99yam40]

if you can hear of feel the clicking from each injector I would think that are operating
not sure if the click is opening or closing back off

[pstephens46]

What's the chance something changed with the boat? Bottom growth or water intrusion that may carry a good bit more weight. Does it stay in the water? Just something to rule out.
When were those plugs changed the last time?

[mokaction]

What's the chance something changed with the boat? Bottom growth or water intrusion that may carry a good bit more weight. Does it stay in the water? Just something to rule out.
When were those plugs changed the last time?

I was checking plugs, I have not changed them since 2016, so I just order some. Other then that, I have not had any issues. I take out my boat almost twice a month without fail.

1. I know fuel is good.
2. I know I have good batteries. Have 3, I check the charge on them before I go out every time.
3. Boat is on a trailer.
4. exhaust was done back in 2016.
5. replace ECU back in 2015 cause of IAC unit, burning out. Also burned out 2 of my coils.
6. Replaced IAC again back in 2016

[pstephens46]

2016 isn't all that long a time since replacement. Engine has had a few electrical gremlins for sure. At least you can rule out hull and weight I would think. Ran fine prior to Nov.....

[99yam40]

I remember my brother with a 16 ' glass boat back in the 70s that caught and held a bunch of water in the hull sitting on a trailer
it was slow getting up on step
pulled the second plug that was from under the deck and it was a bunch of water that came out

[mokaction]

I remember my brother with a 16 ' glass boat back in the 70s that caught and held a bunch of water in the hull sitting on a trailer
it was slow getting up on step
pulled the second plug that was from under the deck and it was a bunch of water that came out

Thank you, I checked the Hull to see if there was any water in it. all good.

[JerEazy2]

Rodbolt is going to be so proud to read this:

"Now would be a good time to find a shop with test wheel YB-1626"

[mokaction]

Rodbolt is going to be so proud to read this:

"Now would be a good time to find a shop with test wheel YB-1626"

is he still around? great guy