Big Help Please Gsxr 600 problem?

[KelvinZXR750]

Hi guys i just brought a gsxr 600 off ebay picked it up sunday. it had been sitting for about a month the guy said. i drove it home and it was ok a bit jerky in first and second gears but i thought it may be because it has been sitting for a month. i just washed it and left it for a while tryed to start it and it seems to be only running on 2 - 3 cylinders... i have to pull the throttle right open of it to start and it just sticks on about 2000rpm then it starts to kick in and splutter and when it revs up flames come out of the exhaust. i tryed to drive it but it dont want to move. any advice would be great please... i think i may have been knocked

[m0l0t0v]

Did the guy not tell you what was wrong with the bike? It's probably the reason he was selling it in the first place.

[KelvinZXR750]

nope he said it was fine. he just got it out from the garage having a new wheel bearing and braded hoses. he sold it cos he brought a new r1 thats what he said.

[Cillit-BANG]

In my very limited mechaincal experience of problem finding, my first port of call would be to strip and check the carbs.

[m0l0t0v]

Question him about the problem and see what he says.

It sounds extremely fishy. Did you see the R1 when you picked it up?

[KelvinZXR750]

i just called him he said there should be no problem with the bike as he was using it up to about a month ago... he showed me the r1 (very nice) he was quite a old guy too part of a bikers club

[Jebus]

i agree with that is does sound a bit dodgy, the oh i got a new bike coming so gotta get rid is a common one for getting rid of a dodgy bike. How was it when you went to view it? or was this a blind purchase?
____________________
2nd time around CBT: 8/9/11
125 Varadero

[m0l0t0v]

What did he say about the problem?

Scammers tend to be nice people untill they leave with your money.

[Pete.]

[KelvinZXR750]

Brought it from ebay his reason for sale was he has the r1 so he dont need the gsxr pointless having 2 bikes

https://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&ih=015&item=250029102969&rd=1&sspagename=STRK%3AMEWN%3AIT&rd=1

[m0l0t0v]

Like it's pointless to have 2 tv's?

IT sounds real dodgy. Did yo utel lhim about the problem? what did he say?

[Davo]

Has the bike got an aftermarket can on it? (or did it have one?)

If it's been sitting around for a while, I'd be tempted to drain the petrol out of the tank & carb bowls and give it some nice fresh petrol.

To test that it is running on all four cylinders I normally get a little water spray bottle and spray each of the down pipes in turn to see if I get steam.

If you get a chance, would be worth checking that all the spark plugs are sparking with a nice bright spark.

[KelvinZXR750]

yup i called him up and told him that it sounds like its only running on 2 or 3 cylinders and splutering he said.... thats odd it should be fine i aint had no problems with it.he asked if i had taken it to a mechanic yet so they can look at it

[GSXFire]

First i'd check the plugs then the leads, it just sounds like a misfire.
____________________
Fire by name Firefighter by nature.
My old bikes. https://www.bikepics.com/members/firefighter1/

[Pete.]

The guy's feedback suggests he's a genuine kind of fella. The bike looks mint and not obviously neglected.

Try to fire it up, run it for less than 10 seconds and check how many of the exhaust downtubes are warm.

[KelvinZXR750]

[Pete.]

The SRADs have 2 coils. Each has 2 plug leads. One coil serves plugs 1 and 4 (counting from the left sitting on the bike). The other serves 2 and 3. Sometimes people put the leads on 1/2 and 3/4, which is wrong. It would prove the guy to be a liar if it were like this.

[KelvinZXR750]

[Davo]

Sounds like you need to check the plug in that cylinder first to see if your getting a spark.

How compentent are you with a screw driver and spanners?

What you need to do is to remove the spark plugs (keep the HT leads connected) & ground them against the engine block, turn the engine over to see if you get a spark.

Just out of interest where about's you based, if your local to Sussex I can come and give you a hand.

[KelvinZXR750]

davo i live in north london.... i did a mechanics course for a year so i know a few things but it was with cars lol. i can check the plug easy... if there is a weak or no spark where do i go from there... and if there is a spark i dont wanna know about getting the engine done lol

[Davo]

[KelvinZXR750]

Took a recording of it... it starts ok runs on all 4 cos down pipes where hot then it seems to die and lose that cylinder.

[KelvinZXR750]

ok guys i took the plug out tested it it spraks ok... i took another plug out and tested it and that was ok gave them a clean and it start fine first time. should i test the leads? if so how would i go about it.. or should i just get new plug for it?

Thanks kelvin

[gixxersixx]

Flames out the exhaust is unburnt fuel ignited in the exhaust. You say when you clean the plugs up it starts ok then after a while it stops firing on 1 cylinder, if you take the plug out of the misfiring cylinder is the plug choked up?
____________________
We're all just born to die. So lets have some fun
gsxr6k1,pc,k&n,skimmed block,flowed head,yoshi gasket,cams,blue print,arrow system titanium can,quick shifter,gilles rear sets,ktech forks,ohlins shock,galfer waveys, -3front+4rear + other goodies

[KelvinZXR750]

How do you mean chocked up?i swaped the leads over what connects to the spark plug and it seems still to be happening on the same cylinder... should i try and swap the plugs over?