Carbs vs EFI - FIGHT!

[xX-Alex-Xx]

[Kawasaki Jimbo]

I’m going to raise the topic of the FI on/off throttle, if only to use the word ‘snatch.’ Do modern bikes still have that problem?

[chickenstrip]

[trevor saxe-coburg-gotha]

fwiw the worst bike i rode for fuelling was an mt03 (the old version) - it surged on constant 40mph throttle and was a handful at mini roundabouts and the like - still fun though; it did sign off really quickly, mind you
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"Life is a sexually transmitted disease and the mortality rate is one hundred percent."

Mobylette Type 50 ---> Raleigh Grifter ---> Neval Minsk 125

[Kawasaki Jimbo]

[Easy-X]

The MT07/XSR700 is meant to be bad for it but I just took a bit of the slack out the throttle cable and it seems a lot better, maybe I've just got used to it. The Rebel 500 had no problem at all. The SV650 I had for a month or so had that clutch pull, throttle blip feature which I can't say I cared for so I'll not pass comment.
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Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter

[Easy-X]

[chickenstrip]

[DJP]

Injection: Bike starts and runs.
Carbs: Bike doesn't always start or run.

Conclusion: Injection wins!
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Suzuki Bandit 1250
https://deejayp999.atwebpages.com/index.html
That's http not https

[chickenstrip]

[Easy-X]

[redeem ouzzer]

Fuel injection is more complex and makes other maintenance more difficult (loads of plumbing under the tank to deal with etc). Injection is less susceptible to issues with stale fuel though. It’s just all the other crap it needs, fuel pump, sensors etc. Just a pain in the arse for home spannering and tuning. Bin the airbox and vac tap and carbs are lighter and simpler.
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Be a REAL MAN!

[DJP]

[ThunderGuts]

I've never had a problem with a FI bike, but I've only owned nearly-new FI bikes. I've had a few carb'd bikes, one was a nightmare initially but it had been neglected massively before I got it. The other is faultless. For me, I like components that are manageable at home. FI - forget it, it's a pro job unless you're seriously kitted up and knowledgeable. Carbs meanwhile are home-serviceable and straightforward to deal with.
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TG.

[Hong Kong Phooey]

Carbs are smooth, predictable, and reliable, they were around for aeons before Greta. Mine have been running since 2016 without any issue, the only reason I pulled and cleaned them was due to a faulty coil giving the impression it was a carb fault (99.⁹⁹⁹% of carb faults are electrical).

Since Euro fiddlers got involved, FI did have snatchy throttle issues in many bikes, and the solution to make them smooth again is to override the emissions Euro gubbins and pay for a remap.

This green revolution is costing a lot of money to make vehicles perform properly, DPF removals, emissions test fiddling, putting piss in a separate tank in a car, vehicle remapping to unleash the true potential or smooth out the throttle. A lot of people are making a living from it.

Progress.
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'81 CG125, '97 FZS600 : '99 CBR600F4, '09 KTM RC8

[chickenstrip]

[Zen Dog]

[A100man]

[Easy-X]

Talking of Ethanol Demons:

Drivers mixing E5 and E10 fuel in bid to retain fuel economy after issues with new petrol

Clickbait journalism much?
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Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter

[chickenstrip]

[A100man]

So I now watched the (very polished and authoritative sounding) video and it confirms what I thought of this bloke after his 'counter leaning bollox...

one of the YouTube comments sums it up reasonably well, although I don't know about the emissions thing..

Well..... as a veteran mechanic of 25 years I can assure you it was a pretty basic attempt to explain the difference. He makes some good points, but is dead wrong on others. Ethanol fuel alone WILL NOT “gum up” in just a few weeks. Buying low quality fuels and poor storage habits of the bike WILL cause issues. People (and lower quality mechanics) are always quick to blame ethanol when the problem is in fact not the fuels fault. The fact that motorcycles use what we call a “speed density” system is really pretty irrelevant to well, anything. The automotive world used the same system for around 10 years before going to multi port injection with the ability to more precisely match the fuel/air ratio. This was done for.... emissions. Nothing else. Motorcycles simply don’t need all the other garbage because they are small enough to be able to pass emission standards without them. This is also why you can still find carbureted bikes. (Last knew there still are anyway.) Once again, I watched a video by someone with a marginal understanding of mechanics, and even less understanding of the why and how things are built the way they are.
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Now: A100, GT250A, XJ598, FZ750

Then: Fizz, RS200, KL250, XJ550, Laverda Alpina, XJ600, FZS600

[Zen Dog]

[chickenstrip]

[Mysteriass]

[Zen Dog]