Author Topic: Problems at high speeds. (Read 18149 times)

mr self destruct · « **on:** 06 November 2016, 02:19:41 pm »

When I'm travelling at high (i.e. unrestricted autobahn) speeds, my 600 develops a real reluctance to accelerate.
I'll be doing over 7k rpm and when I open it up it just dies for about a second before picking up again, like I've actually switched the ignition off, which makes overtaking dangerous.
I've had the tank up and checked the fuel lines are in good condition, not kinked or blocked. I've changed the plugs and had it serviced but it makes no difference. The battery is in good condition, TPS is fine (jumping to 5k when tested) so I reckon the next stage is to check the carbs.
I've not checked the rubbers or stripped the carbs down because in my experience with car carbs, any leaking inlet rubbers or sticking needles affect the tickover/low revs more than high revs. Is that wrong though?
The next thing I was going to do is balance the carbs, but before I start I just wanted to know if there's anything obvious I've missed.
What do you think?

slappy · « **Reply #1 on:** 06 November 2016, 03:43:13 pm »

Fuel filter dirty or partially blocked maybe.

darrsi · « **Reply #2 on:** 06 November 2016, 04:19:26 pm »

Air filter

Frosties · « **Reply #3 on:** 06 November 2016, 09:22:01 pm »

Might be worth trying some STP Complete Fuel System cleaner before surgery - love the stuff.

http://www.ebay.co.uk/itm/like/281269295350?lpid=122&chn=ps&adgroupid=33170564523&rlsatarget=pla-257284465600&adtype=pla&poi=&googleloc=1007247&device=c&campaignid=661219804&crdt=0

tommyardin · « **Reply #4 on:** 06 November 2016, 11:14:05 pm »

Quote from: Frosties on 06 November 2016, 09:22:01 pm

Might be worth trying some STP Complete Fuel System cleaner before surgery - love the stuff.

http://www.ebay.co.uk/itm/like/281269295350?lpid=122&chn=ps&adgroupid=33170564523&rlsatarget=pla-257284465600&adtype=pla&poi=&googleloc=1007247&device=c&campaignid=661219804&crdt=0

Thanks for the link Tiger just ordered a 400ml bottle on fleaBay. Bike is running fine but it is supposed to help clean and maintain the whole of the fuel system so can only do good, and it will help prep it for an overwinter sleep engine wise. (About 10 to 12 weeks)

Hair dressers car in for a new clutch tomorrow.

mr self destruct · « **Reply #5 on:** 07 November 2016, 05:04:58 am »

Thanks for the replies, I thought the air filter would've been replaced in the service (60k) but I'll have a look at that and the fuel filter this week.

tommyardin · « **Reply #6 on:** 07 November 2016, 10:53:27 pm »

Quote from: tommyardin on 06 November 2016, 11:14:05 pm

Quote from: Frosties on 06 November 2016, 09:22:01 pm
Might be worth trying some STP Complete Fuel System cleaner before surgery - love the stuff.

http://www.ebay.co.uk/itm/like/281269295350?lpid=122&chn=ps&adgroupid=33170564523&rlsatarget=pla-257284465600&adtype=pla&poi=&googleloc=1007247&device=c&campaignid=661219804&crdt=0

Thanks for the link Tiger just ordered a 400ml bottle on fleaBay. Bike is running fine but it is supposed to help clean and maintain the whole of the fuel system so can only do good, and it will help prep it for an overwinter sleep engine wise. (About 10 to 12 weeks)

Hair dressers car in for a new clutch tomorrow.

Its the hair spray and styling gel that focced the clutch up

darrsi · « **Reply #7 on:** 07 November 2016, 11:20:47 pm »

Ignore the instructions, lob the whole bottle into a full tank of fuel.

Frosties · « **Reply #8 on:** 08 November 2016, 08:45:49 pm »

Quote from: tommyardin on 07 November 2016, 10:53:27 pm

Quote from: tommyardin on 06 November 2016, 11:14:05 pm
Quote from: Frosties on 06 November 2016, 09:22:01 pm
Might be worth trying some STP Complete Fuel System cleaner before surgery - love the stuff.

http://www.ebay.co.uk/itm/like/281269295350?lpid=122&chn=ps&adgroupid=33170564523&rlsatarget=pla-257284465600&adtype=pla&poi=&googleloc=1007247&device=c&campaignid=661219804&crdt=0

Thanks for the link Tiger just ordered a 400ml bottle on fleaBay. Bike is running fine but it is supposed to help clean and maintain the whole of the fuel system so can only do good, and it will help prep it for an overwinter sleep engine wise. (About 10 to 12 weeks)

Hair dressers car in for a new clutch tomorrow.

Its the hair spray and styling gel that focced the clutch up

Or your handbag rolling forward and pressing on the clutch pedal

Frosties · « **Reply #9 on:** 08 November 2016, 08:49:15 pm »

Quote from: darrsi on 07 November 2016, 11:20:47 pm

Ignore the instructions, lob the whole bottle into a full tank of fuel.

unfazed · « **Reply #10 on:** 09 November 2016, 10:47:26 pm »

Is it only if you crack open the throttle open at around 7000 rpm and ok if you take it up through the revs say from 4000 to 10000?

tommyardin · « **Reply #11 on:** 09 November 2016, 11:05:31 pm »

Its the hair spray and styling gel that focced the clutch up

Or your handbag rolling forward and pressing on the clutch pedal

Bit rude!
Oow! stop poking me like that or I might have to pinch you with my heated hair tongs

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Frosties · « **Reply #12 on:** 20 November 2016, 12:11:42 pm »

Any update on the bike picking up at speed fella ???

mr self destruct · « **Reply #13 on:** 13 February 2017, 07:00:39 pm »

Quote from: Frosties on 20 November 2016, 12:11:42 pm

Any update on the bike picking up at speed fella ???

Sorry for the delay in replying. Long story short: Cancer took a close relative, up to me to clear out her house, inherited her collection of cats, house got broken into and a few mates and I had to comvince some squatters it was in their best interests to leave.
Fitted new air and fuel filters, but both were spotless anyway, new plugs, new caps, a good dose of STP (tank almost empty, dropped a bottle in, 50 mile blast, then filled up) all made no difference.
Next step I suppose is to strip, clean and balance the carbs, but you've heard of the phrase cash rich and time poor? Well I've got fuck all of either.

Quote from: unfazed on 09 November 2016, 10:47:26 pm

Is it only if you crack open the throttle open at around 7000 rpm and ok if you take it up through the revs say from 4000 to 10000?

That's exactly it. I can cane it from a standstill and it'll pull all the way up to 120 without a problem, but if I'm already doing 90 it just bogs down.

unfazed · « **Reply #14 on:** 13 February 2017, 07:40:12 pm »

Change the Rectifier/Regulator

mr self destruct · « **Reply #15 on:** 13 February 2017, 09:47:32 pm »

Will do, cheers.
Any recommended supplier or will it be an ebay job? I usually use wemoto but they don't list one for the FZS600.

unfazed · « **Reply #16 on:** 13 February 2017, 11:07:18 pm »

Last time I had that very similiar issue on my sonss Fazer, I bought second hand one from Fazerspares in Bristol, be careful as there are 2 types fitted to the 600 fazers and the one you want is the SH650C-11. Just checked Fazerspares and they have one for around £25.

Static tests on the faulty one showed it was working fine. When I changed the original for the spare from fazerspares all was fine, just to prove it inconclusively we put back the original and problem returned. Only thing I could think of was that it was breaking down. Not a very common problem and which is why I took the risk of buying secondhand

The rectifier regulator from the FZS1000 is exactly the same model with a longer lead.

mr self destruct · « **Reply #17 on:** 14 February 2017, 12:02:20 am »

Thanks a lot for the advice bud, I'll put one on my shopping list!

mr self destruct · « **Reply #18 on:** 14 February 2017, 09:03:29 pm »

Ordered it from Fazerspares this morning so I'll let you know how it goes soon.

tommyardin · « **Reply #19 on:** 14 February 2017, 11:22:24 pm »

The title of this post made me smile
Problems at high speed
By Mr Self Destuct

mr self destruct · « **Reply #20 on:** 15 February 2017, 06:47:34 am »

Quote from: tommyardin on 14 February 2017, 11:22:24 pm

The title of this post made me smile
Problems at high speed
By Mr Self Destuct

The ironc thing is, the worst injuries I've had on motorbikes have both been at less than 10mph.

mr self destruct · « **Reply #21 on:** 19 February 2017, 04:43:52 pm »

Well, it's not the regulator but for the sake of £25 I'm glad I found that out.

His Dudeness · « **Reply #22 on:** 19 February 2017, 05:42:27 pm »

You could do a plug chop. You're not going to solve the problem by doing it but it should give you some direction. You hold the bike at the rpm while the problem is happening and while it's happening hit the kill switch and then take a plug out and check it's condition. If it's dry wet etc. You're trying to get some evidence of what's happening instead of guessing

unfazed · « **Reply #23 on:** 20 February 2017, 06:24:19 pm »

Quote from: mr self destruct on 19 February 2017, 04:43:52 pm

Well, it's not the regulator but for the sake of £25 I'm glad I found that out.

Strange, the symptom you described was exactly the same as we had, if you hold it at 7000 for a short while and then gun it it died and then picked up. Fine if revved straight from off to the red line. It happened suddenly. My son had it out one day and all was fine, next day fault was there. We put in a new air K&N filter and oem fuel filter, but no change.
We swapped the following part from my 600 to my sons, coils, plug caps, carbs, ECU, fuel pump, and finally because it was the only thing left to change the rectifier/regulator. It was only when we changed the rectifier regulator did the problem go.
We put the original rectifier/regulator back, problem back.
The bike still has my bikes original carbs on it as it was to much hassle to change them back

mr self destruct · « **Reply #24 on:** 20 February 2017, 08:35:59 pm »

The odd thing is, during the recent cold spell the problem almost disappeared. It'd die for less than a second then pick up. Today it was warmer and it didn't die, but took ages to speed up. I got caned by Golf tdi for fucks sake!
I'll try the plug chop when I can find somewhere to pull over safely, but as it stands I'm thinking the next step would be a carb clean and balance. Trouble with that is it'll take longer than I can spend on the bike in one go, and I can't be without it right now as I'm working my arse off.