Question about 2005 Yamaha YZF-R1

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Engine error light

Ik just upgraded my exhaust and put a pc3 with costom map and v-stacks and air filter on my bike runs great but now the check engine light stays lit up.

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When you installed your pc3 did it come with a replacement plug for your oxygen sensor?
do you jnow how to pull the engine codes?
later paul

Posted on Nov 18, 2008

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2002 suzuki gsxr 600 bogs at 7,8 and 9 rpm..then when passed 9 after bogging and sputtering pass those rpm,it runs just fine from 9 to 14 rpm.it just recently started doing this.so from idle to 7 and


I assume you are using premium gas. If not you should. Check the plugs. If they are white the bike is running lean.. Make sure the gap is set correctley for your bikes spark plugs. Also check the jet sizes in the carbureator for your modifications and elevation. If the bike was fine and just needed a tune up i would pull the map off and reinstall the stock one.

Oct 18, 2012 | 2002 Suzuki GSX-R 600

2 Answers

I took the stock air filter off my 2000 Suzuki Katana 600 and put a K&N air filter in it, when i accelerate it stalls out a bit before kicking up to speed. a slight lag then go.


Changing to a K&N air filter changes the air/fuel mixture for your bike, and you're probably hitting an overly lean spot before things start to even out. For bikes still running carburetors, which I think you have, you can compensate for this by changing to a slightly larger idle jet. Your main jet is probably fine (it's kicking in after the lag); it's the crossover from idle to main jet that's causing the flat spot.
Talk to your dealership parts counter to get recommendations about jet settings. They may suggest, for example, to keep your existing idle jet and go with a different main jet. Expect to try a couple different setups to find one that works best for your bike and your riding style. I would highly recommend keeping your original jets, though, in case you ever go back to the stock air box.

May 09, 2011 | 2000 Suzuki GSX 600 F (Katana)

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Check engine light was on with many codes, fixed all problems( all new exhaust, magnaflow cat system, flow master muffler, all o2 sensors were replaced, gave a tune up using MSD wires cap and rotor and e3...


new exhaust is to much for computer to figure out, since its flowing a lot more air , engine management cannot figure out fuel ratio hence the o2 sensor and knock sensor. u will have to install a performance chip or have computer re figured for new settings.

Apr 09, 2011 | 1996 Chevrolet Tahoe

1 Answer

I was riding my cg125 earlier and it was fine, its being tuned at some stage but at the momnet im trying to make it run perfect, it has got perfromance air filter and upgraded carb jets and a straight...


I expect the lack of back pressure from the new exhaust pipe will have a lot to do with it. If there is not enough back pressure, the reed valves won't work properly and no fuel will enter the engine.
Try the old exhaust system to find out.

Jan 17, 2011 | Honda CG 125 Cargo Motorcycles

1 Answer

Cutting out at idle


the batery is ok if the engine start avery time. Also the volts are ok.
Have you made any modifications on it? Sport exhaust, sport air filter?
Check also the air filter. Make sure is clean...
Idle speed should be around 1000-1200 rpm. You should have a screw to fix the idle speed. Check it on the carburetors area, or download the manual from internet.

Cheers.

Apr 12, 2010 | 2003 Suzuki SV 650

1 Answer

Spitting oil


you put too much oil on your engine, 2.8L without filter change. 2.9L with filter change is the recomemded if you exceed you bike will spit the excess oil sometimes the oil goes to air cleaner have your air cleaner check and cleaned

Oct 27, 2009 | 2002 Aprilia RS 250

1 Answer

Have put vance and hince powershot slipons on, vance and hince fuelpac and k&n high flow air filter.The bike when warm sometimes stalls when idling what can i do. thanks


Sounds like it's running lean. Almost everything you mentioned here would cause a carb equipped bike to run lean and cough and sputter and stall. Since you bike is fuel injected, I cannot help you. If it were mine, I'd take it to someplace that could put it on a dynometer with an exhaust gas analyzer. They may recommend the installation of a PowerCommander. Your local dealer may can change the fuel map.

Sep 27, 2009 | 2008 Harley Davidson VRSCAW 105th...

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Black exhaust smoke comes out of tail pipe, now it wont run how do I fix this and where do i start


Black smoke is a sign of too much fuel. First make sure the air filter is clean. Now note if the check engine light works, and if it stays on, get the codes read to get an idea of what error the computer has found. (A bad coolant sensor for the computer can make the computer think that it's well below freezing and increase fuel) Try these as a start.

Sep 26, 2009 | 2000 Ford Focus

1 Answer

Exhaust


Yes , You can By-pass the afterburner , but! have the engine tuned following doing that as it will not be running the correct air/fuel ratio. I fitted a Power Commander PC111 USB with a zero map , and had the dudes at Dyno Jet run it up on the Dyno and create a bike specific fueling map for it. It is AWESOME !!! I run 98 octain fuel and the air fuel ratio is 13.2:1(K&N AIR FILTER ALSO)

Nov 10, 2008 | 2005 Suzuki Boulevard M95

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