Bike Smoking when coming off revs, Rider behind said smells very rich after new

[Xdiavel]

If anything better headers would make it lean rather than rich. So I can't see them being why it's smoking.

Totally agree with you Hooli, But then that raises the question that a mate following behind said it smelt very fuel rich? I also noticed something similar when following my friend on his 1250 bandit with a rear can on (no baffle) stock headers, quite a strong smell of fuel albeit without the smoke.

[Hooli]

Be worth checking ya TPS maybe? if it's out of adjustment the bike could still be fueling on the overrun. There's a thread on here somewhere for it, it's a simple enough job.

[Xdiavel]

That's the trouble with these older bikes, After 20+ yrs you have no idea how many fingers have been in there tinkering with stuff, Or not tinkering enough in some cases. I have even spoke to a bike mechanic Today over the phone and he is as stumped as me.

As the OEM cans (albeit modified) seem to stop the issue so far for the little testing I have done I tend to be looking more to the fuelling side atm. As I have put a full system on it, looks like I am going to have to suck up the cost on a PC5 and get it dyno tuned correctly to see what is going on with the fuelling.

I only changed the exhaust in the first place as the previous owner crushed Cylinder 3 & 4 headers when dropping off a curb. So the bike is rapidly turning into a money pit. I have spent well over £1K on it since I bought it last Aug. But hey that's my problem. But the thought of spending another £430 + Dyno tuning and it could still be there is not making me fall in love with this bike.

Or I have to buy another 2 downpipes and put the headers back to stock and use the pipe werx cans as will be more restricted with stock headers. but stock downpipes are very expensive.

Oh the Joys 

[Hooli]

I'd go with swapping those two seals Seth mentioned before you consider spending hundreds of quid on it.

[Xdiavel]

I'd go with swapping those two seals Seth mentioned before you consider spending hundreds of quid on it.

Well guys I have ordered the parts so will see where this will take me. Even just to do this little job has cost over £80 so fingers crossed. Only thing that makes me think it may not be is like the stem seals , I would imagine it would be bad on start up if they weeped etc.

Time will tell and at least they will be done.

[Phill P]

A thread on here does mention rich running and various things it could be, you definitely need to get it running correctly as a different map may just mask the problem, don't listen to facebook

[seth]

I'd go with swapping those two seals Seth mentioned before you consider spending hundreds of quid on it.

Well guys I have ordered the parts so will see where this will take me. Even just to do this little job has cost over £80 so fingers crossed. Only thing that makes me think it may not be is like the stem seals , I would imagine it would be bad on start up if they weeped etc.

Time will tell and at least they will be done.

While the tops off also check the shims they should be fine but if you get a chance why not check them .
Good luck

[seth]

I'd go with swapping those two seals Seth mentioned before you consider spending hundreds of quid on it.

Well guys I have ordered the parts so will see where this will take me. Even just to do this little job has cost over £80 so fingers crossed. Only thing that makes me think it may not be is like the stem seals , I would imagine it would be bad on start up if they weeped etc.

Time will tell and at least they will be done.

While the tops off also check the shims they should be fine but if you get a chance why not check them .
Good luck

A thread on here does mention rich running and various things it could be, you definitely need to get it running correctly as a different map may just mask the problem, don't listen to facebook

If its burning a slight bit of oil on the over run it'll smell like it's running rich .
It could be lots of things but I always go for the simple and obvious before going in deeper and normally things are fixed 1st time .

[Xdiavel]

I'd go with swapping those two seals Seth mentioned before you consider spending hundreds of quid on it.

Well guys I have ordered the parts so will see where this will take me. Even just to do this little job has cost over £80 so fingers crossed. Only thing that makes me think it may not be is like the stem seals , I would imagine it would be bad on start up if they weeped etc.

Time will tell and at least they will be done.

While the tops off also check the shims they should be fine but if you get a chance why not check them .
Good luck

A thread on here does mention rich running and various things it could be, you definitely need to get it running correctly as a different map may just mask the problem, don't listen to facebook

If its burning a slight bit of oil on the over run it'll smell like it's running rich .
It could be lots of things but I always go for the simple and obvious before going in deeper and normally things are fixed 1st time .

Has anybody you know of had this problem? Are these pairs seals normally a problem, just wondered how you knew about them?

[seth]

I know of several bikes that have had this problem and its normally if they've used fully synthetic motorcycle oil 

[grog]

Mate, id be doing basic checks first, adjust stps, tps, balance bodies. Change the oil.Drain air filter housing. Cannot see how changing exhausts can create your problem.

[Xdiavel]

Mate, id be doing basic checks first, adjust stps, tps, balance bodies. Change the oil.Drain air filter housing. Cannot see how changing exhausts can create your problem.

Hi, I have done most of that tbh, Well apart from TPS STPS as both of those have been marked up with their position so do not want to move them as bike runs sweet with no hesitation etc and great power right through. I have balanced the throttle bodies and done a full service although was recently done by the previous owner. Looked in the air filter case and squeaky clean, Plugs looked good also. 

[Xdiavel]

Also to add guys as not sure If I mentioned it but only really seems to be doing it out of the near side pipe! You do see a little from the Right but think that's just where some is crossing the link pipe.

[Eric GSX1400K3]

Have you checked the rubber vac lines to each TB? They perish and upset the balance....but then idle and running could be off, unless the tps and stps are compensating enough, if running rich then the near side plugs would be fouled too.

I dont think a PC5 and dyno tune will resolve it tbh

[Hooli]

I'd go with swapping those two seals Seth mentioned before you consider spending hundreds of quid on it.

Well guys I have ordered the parts so will see where this will take me. Even just to do this little job has cost over £80 so fingers crossed. Only thing that makes me think it may not be is like the stem seals , I would imagine it would be bad on start up if they weeped etc.

Time will tell and at least they will be done.

Ouch, that's a new cam cover gasket & so forth too then? I don't think I've ever replaced one, I just smear with a tiny bit of sealant & forget it afterwards. Personally I'd do the same with the PAIRs seals, but then I'm a cheapskate & reuse seals when rebuilding brakes or slave cylinders too.

Hopefully it fixes your issues and as Seth says, check the valve clearances while in there. They'll be fine, I've never known one of these bikes needing them adjusting unless they've had new cams fitted. But it's easy to do so worth it for peace of mind.