Problem:

when bike is hot ... fan turns out

if fan is long for a little bit and i rev the throttle

bike will hesitate and sometimes stall

Soltuion: I hooked up a muiltimeter to check voltage

when i give it gas the voltage doesn't drop or change at all

Question:

what is the cause. All i can think of is the fan drawing to much current or seomthing?

 

I am faced with the same problem, and it seems like the infamous Regulator/Rectifier problem.

What's your idle when cold? and any mods to air filter/exhaust? (possible lean situation?)

Anyone know if a F4i R/R fits the F4? (F4i R/R has 2 plugs where as F4's has 1)

 

I just fixed the reg/rectify like a few months ago due to charging issue. The bike kept same voltage 11.8 at every rpm. My bike runs super rich as it smells pretty strong often

 

anyone with news to this problem

bike gets hot fan turns out ... give the bike sidden throttle and it almost always bogs and stalls ... boy do i ever hate carbs

 

Bikes do that when they get hot. Pretty much all bikes. Your best bet is to keep your coolant temp down with some Engine Ice or there is a mod in one of the sections where you can change out your temp. sensor so your fan comes on at 180 instead of 220.

 

When a bike is hot, you have to ride them differently. As far as throttle. I turn my idle up often when its hot and that seems to help with the bogging too.

 

yea but the temp needle is ust above halfway when it happens

i don't re call this happening before

ever since i needed a new batttery and a r/r and then fan fuse blowing ( taped the wires better) this has started to happen ... and it ONLY does it when fan is on

maybe i should look at the fan in more detail

drawing too much current?

 

Which r/r did you replace it with? OEM? Aftermarket?

 

Honda replaced the old flat r/r b/c it was prone to overheating & failure. The model that superseded the orig design, is a finned version & is a direct plug-in replacement. That's all you'll need IF you need to replace it.

For REFERENCE:

• Old original model part no. SH633-12
• New model part no. 31600-MV4-010

 

Most likely fan is going and drawing to much current which is why the fuse was blowing. Make sure the fan doesnt have anything dragging in it ie wires or tape and blow out the fan motor with some compressed air but you will probably have to replace it.