She dies on me!!!

Hinken · May 16, 2005

Help! Please!

My FS 650 -04 tends to die on me when she gets warm. This happens when I'm giving too much throttle after idling. I've seen some threads about this and I know that both my gas taps are swithced on. There is a FP system om and I've mounted .48 idling jet and a 170 main and the needle is set to the 1'st position. I haven't checked the sparkplug yet. Is there anything i particular I should look for considering the sparkplug?

I'd appreciate any answers. Don't want to start do dislike my first Berg.

Regards Henrik

LeFrog · May 16, 2005

What position is the clip at?

PowerFiend · May 16, 2005

Don't dislike a bike due to what looks to be a jetting issue :wink: , they can occur with any brand.

PowerFiend · May 16, 2005

What part of the powerband does it die after idling? Cracking the throttle to just off Idle? ie. The 0-1/4 throttle range, which can be adjusted with the pilot air screw.

husabutt · May 16, 2005

Did your bike always do this or is this something new? Did you purchase the bike new?

Taffy · May 16, 2005

Henrik

your jetting is absolutely everywhere! who the hell gave you the advice?

first of all i'm going to bet that you think the 'first' position on the needle is the end that's nearest the point. correct?

you need about a 162-165MJ and the needle on clip 4-the middle clip. the pilot jet is way too big at 48. get it down to a 40-42 tops.

you must turn the accelerator pump either off or stop it squirting completely at 1 second from when the slide starts to move.

BTW you should be letting us all know your elevation, country, model and year.

this info is only a shot in the dark because i don't know what you're saying. try tobe clearer and factual.

what to look for when looking at the plug? don't, don't look at the plug at all, don't take it out, don't look at it, don't tell anyone here anything about it don't say a word, nothing.

DO NOT LOOK AT THE PLUG.

regards

Taffy

husabutt · May 16, 2005

Henrik:

You looked at the plug. Didn't you?

Don't lie.

Mackberg · May 16, 2005

In Taffy's post he says;
"this info is only a shot in the dark because i don't know what you're saying. try tobe clearer and factual."

Taffy,
Could my eyes be deceiving me? Is this really you talking? You actually want someone to be clear and factual? You've come full circle!! Good Boy!!!

Mackberg :thumb:

schwim · May 16, 2005

Mack,

Your last post is of no value technically, and is better suited in the general forum, where the moderators are sarcastic, and people say things that make no sense.

I will never visit the "Fuel" forum again.

thanks,
json

Mackberg · May 16, 2005

Schwim,
My apologies to "Super Moderator". I just couldn't resist. This is the END.

Sincerely,
Mackberg

schwim · May 16, 2005

I was just giving you a hard time

thanks,
json

BundyBear · May 17, 2005

schwim said:
I will never visit the "Fuel" forum again.

This is kinda like vowing never to go into your own dunny 'cause once you didn't like the smell in there.... :lol:

For my two bob worth, if it starts well cold then runs rough when it gets hot then I'd go with Taff's suggestions to lean out the fuel mix. If it starts from cold without the choke it might indicate it jetted rich?

I would look at the plug & clean it, especially if it has been running rich. Check for good spark while cranking when you have it out.

There is also a small chance that the stator could be failing when it heats up. Sort the jetting first, but if the problem persists, pull the plug when hot & see if it still has good spark.

Basse · May 17, 2005

Taffy said:
Henrik

your jetting is absolutely everywhere! who the hell gave you the advice?

first of all i'm going to bet that you think the 'first' position on the needle is the end that's nearest the point. correct?

you need about a 162-165MJ and the needle on clip 4-the middle clip. the pilot jet is way too big at 48. get it down to a 40-42 tops.

you must turn the accelerator pump either off or stop it squirting completely at 1 second from when the slide starts to move.

BTW you should be letting us all know your elevation, country, model and year.

this info is only a shot in the dark because i don't know what you're saying. try tobe clearer and factual.

what to look for when looking at the plug? don't, don't look at the plug at all, don't take it out, don't look at it, don't tell anyone here anything about it don't say a word, nothing.

DO NOT LOOK AT THE PLUG.

regards

Taffy

Hi all,

I'm answering for Henrik because his job includes driving around and mine sitting in front of a screen all day :wink:
We do all the work on the bikes together and they are both set up in the same manner.

So firstly, we drive around the Stockholm area, so elevation would be 0-90' almost all the time. The bikes are 04s, Henrik's a FS650 and mine is an FE650. Like he says he also has an FP exhaust on his.

The bike was purchased with ~29h on it and the problem was there from day one. When he got it it was fitted with the default jetting (MJ 160 and pilot .45), needle clip in 2nd position "from the top".

Last weekend we rejetted it to 170/.48 but the problem was still there. We moved the clip to the most top one to lean it off further but to no avail. The needle is the default OBEKR.

Does this help in sorting out the problem?

I take it you believe the bike is on the rich side? With MJ 165 and PJ .42, would we have to change any other air/fuel jets inside the carb as well? Whats the best combination to be had if we only change the MJ, PJ and adjust the needle?

PS We never looked at the plug. Not because we should know we aren't supposed to, but because we didn't have a tool narrow enough to fit in between the cam houses :wink: DS

Reg
Tomas + Henrik

Taffy · May 17, 2005

go back to the 160MJ and the 45PJ. then cut off the accelerator pump jet completely. put the needle on clip 3 or 4.

the next bit you have to do when they are warm.

get a kouba pilot screw adjuster or make a cheap version such as the one i did in 'my gallery'. please have a look at it. it cost me Ã‚Â£1 and it's actually very good.

get the bike nice and warm and then try some snap wheelies from tickover/idle in first gear.

just ride along at 6kph and snap the throttle. if and when it dies try to turn the pilot screw under the carb in or out 1/2 a turn. you will get a better result one way or the other. then change it again 1/4 of a turn back or forward.

eventually you will have a wheelie monster!

regards

taffy

Hinken · May 17, 2005

Thanks for a quick reply. I will test all of this at home and be back to tell you how it went.

Regards Henrik

Basse · May 17, 2005

Taffy said:
you need about a 162-165MJ and the needle on clip 4-the middle clip. the pilot jet is way too big at 48. get it down to a 40-42 tops.

Taffy said:
go back to the 160MJ and the 45PJ. then cut off the accelerator pump jet completely. put the needle on clip 3 or 4.

But what would be the best jetting based on my previous info?

If 165/.42 is better than 160/.45 I'd rather buy new jets instead of using the ones I have. Perhaps a different needle would help as well?

I hope you understand my way of thinking?

Thanks alot!
Tomas

Taffy · May 17, 2005

just go back to your original jetting at 160/45

regards

taffy

Hinken · May 17, 2005

will do.

keep u folks updated

madero · May 19, 2005

Some time ago I put on my bike The Doma and FP,One of the things I saw was that with the same jets the FP became too rich(smaller diameter exh)

So probably in those conditions at the time was 48---168-170a good choice.Air-fuel line at 12,8:1.
SAE HP was on the rich side 65 SAE RHP.or 68DIN RHP.

madero · May 19, 2005

One thing I have forget to say the temperatue was on tje lower side.
7-10degrees C.

She dies on me!!!

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