Overheats, bogs when reved

[cmayeux]

Recently my bike seems to be overheating. After it warms up with full choke (idles @ 4300) it will idle around 1200 after turning off choke. When you rev the the throttle, it will bog and die as if its getting too much air. If I let it continuously run at idle for another 2-5 mins, it will eventually die.

Recently (month ago) changed oil, oil filter and seal, and plugs. Also found it to be a qt short on oil which is what i thought was causing to overheat and shut off. It has plenty of oil now and the same symptoms.

Could it be running lean due to clogged jets? What are symptoms of running lean? Does running lean cause over heating? How can I check my oil cooler and pump?

Its a completely stock 2004F with only 4300 miles. Thanks in advance!

[johnny ro]

I vote carbs. Start with air cleaner and work your way inwards.

[Big Rich]

Running lean is when there's too much air and not enough gas in the combustion chamber. Believe it or not, gasoline actually COOLS the mix.

Clogged jets can cause it to run lean, but would make it run like poo before it got a chance to run lean.

There's something going on in that motor - whether the valves need adjusted or you have an air leak or something. What color were the plugs when you changed them?

[cmayeux]

The plugs were black. I added Seafoam to the tank the last time I filled up and I'm thinking that might have moved some trash from the tank right into the carbs.

But would running lean cause it to overheat so quickly. What if I ran it with the choke on? In theory, if it was running lean and getting too much air, I should be able to run it with the choke and correct the mixture. If it still overheats doing that it seems like you could rule out running lean as the cause for overheating.

Thoughts?

[johnny ro]

your inline gasoline filter should stop any large debris coming from tank. Presuming you put one in when you got the bike.

Go out there and remove seat and tank and examine it carefully. I doubt you will escape tearing carbs down.

Others may have better ideas.

[cmayeux]

When I changed the oil and plugs last month i had also bought an inline filter. Was there not an inline filter on it stock? I know there is a filter in the petcock.

Is there how to page or thread on how to clean the carbs? On other threads I have read that it is wise to take both carbs off as one piece and dont seperate so you don't have to sync them later. If any, what are the downsides to not seperating them?

[jeremy_nash]

there just isn't generally a need to separate them, what you need to get to is on the bottom under the float bowls

[Big Rich]

The ONLY benefit to splitting the carbs apart is that they would be easier to pull off the motor. But the hassle of splitting and synching them outweighs that.

As others have said, start at the filters and work your way in. If the plugs were black most likely you are running rich (hence the air filters). Sounds to me like pulling the carbs off the motor and getting them cleaner than clean is your best bet.

[Firewalker]

The ONLY benefit to splitting the carbs apart is that they would be easier to pull off the motor. But the hassle of splitting and synching them outweighs that.

As others have said, start at the filters and work your way in. If the plugs were black most likely you are running rich (hence the air filters). Sounds to me like pulling the carbs off the motor and getting them cleaner than clean is your best bet.

I agree...they come off so easy as one unit I wouldn't even think of splitting them.  2x on the cleaner than clean.