Question about 1999 Triumph Daytona 955i

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Seems like bike is running rich

Added a power commander because at 30 miles a hour bike surges and when bike is warmed up sometimes when you disengage clutch and roll to a stop light bike will die but starts right back up does this occasionally what would be some options?

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The idle problem sounds like an idle adjustment. The surge may be the throttle cable, try spraying a lubricant from the top of the cable and work it back and forth to loosen and release any debris.

Posted on Jan 22, 2009

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1 Answer

Idle low stalls stopped


This is usually a fuel problem. The bike is running either too lean or too rich. Check your spark plugs -- if there's black carbon on the tips, the fuel/air mixture is too rich and needs to be leaned out. If they're white, it's running too lean. If they're tan, there's some other issue. Clean or replace the air filters and check your inline fuel filter (if you have one) to make sure there are not clogs or obstructions.

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You do not say when it surges or stalls. You should first see how the power commander is progarmmed as it may have a problem for the mapping of a certain rpm range etc.

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My bike seems to be using way to much petrol and i dont no y i have put about 30 pound into it and only done about 60-70 miles on it any ideas what could be my problem and solution ?


sounds like the bike is either running to rich or the neddle in the carb has got stuck and letting to much petrol through
remove the spark plug and if its black and oily then its running to rich and the carb needs stripping down and cleaning

hope this helps


John

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As soon as i start my harley the spark plugs get sooted


This is typical. Whether you use the "enricher circuit" on a carburetor or the electronic injection system senses your engine is cold, your engine is being started with an extremely over rich mixture. Once the engine warms up and you either disengage the enricher or the engine temperature sensor senses the engine is warm, the mixture leans out. Still the idle mixture is overly rich but when running down the road, it should lean out to about a 13.5:1 mixture.

Try this, install a new set of plugs in your engine. Start the engine and ride a normal pace of about 50-60 mph for about ten miles. Then, pull in the clutch and hit the "Run/Stop" switch killing the engine instantly. Do not let it idle. Carefully pull off the road downshifting the transmission as you slow down. Do not downshift the transmission too quickly, Wait until the bike slows down to the proper speed before you shift. Once you've got the bike stopped, pull the plugs out of the engine and look at them. They should be a brown color indicating the proper mixture.

Good Luck
Steve

Feb 20, 2011 | Harley Davidson XL 883C Sportster Custom...

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Only getting 20 to 26 miles per gallon. Usually gets 29 to 31. Replaced fuel pressure regulator, spark plug wires. Useing power commander and bike runs good but low miles per gallon?


You don't say how many miles you have on the bike or if you replaced fuel filter at the same time or sparkplugs too..How is the aircleaner ? Do you use choke a lot.VTX's seem to be touchy if the choke is over used.How about the aftermarket power commander.Are you running factory pipes.Let that baby breath Remember the engine is a pump The idea is to get the right ratio of air and fuel in and allow enough discharge orexhaust toget out..Hope this is a little help

Dec 31, 2010 | 2003 Honda VTX

1 Answer

My bike was running badly so i had a plug change


If there is a problem with the bike missing, a power commander wont solve any problem. I would suggest find the problem and fix it before fitting the commander.
A miss may be in the ignition such as a coil lead, plug cap resister, plug cap.etc
If it always happens after it warms up, it could be jetting too rich.
A full service is a broad term and may not include tests of all items.
If they merely checked the air element and it looked clean, without replacing it, this may cause rich running.
Did they adjust valve clearances?
Does it have the standard exhaust?

Jun 06, 2010 | 2000 kawasaki ZX-12R

2 Answers

2001 nomad, has power commander, vance and hinse exhaust and hyper charger. Bike starts but miss fires. Bike seems to run better uphill then down hill. It started on day on a ride when the bike just died...


DRAIN CARBS FROM PETCOCK AT BOTTOM OF EACH CARB MAKE SURE FUEL DRAINS COMPLETELY THEN TURN FUEL BACK ON, IF THIS IS AN INJECTED MODEL DRAIN TANK AND FLUSH THEN RUN IT HARD FOR 20 MILES OR SO, MAKE SURE YOUR OIL LEVEL IS OK

Oct 04, 2009 | 2001 kawasaki VN 1500 Vulcan Classic...

1 Answer

Have changed the exhust to a short pipe and i know that the bike will hacve to be retuned witha after market air filter , but have been told that the KAWA'S NEED A POWER COMANDER to remap the fuel...


If you want the bike to run at top condition YES it is the only way with out putting on even more expensive fuel injectors. Power commanders are made for all bikes, anyone that ever changes there pipes from stock to any aftermarket pipe should buy a power commander and retune bike, plusyou will get all the advertised horsepower from the pipes and increase fuel performance from it. Power commanders are fairly cheap compared toooo you burning out fuel system because it runs to rich or clog it by runig to lean....go with power commander and in about 4 hours it will run great ( thats install and retune time)

Jun 22, 2009 | 2005 kawasaki Z 1000

1 Answer

Runing lean


has good power and I got a great deal. I just ordered the Clymer manual (3-5 days delivery) so I am posting here to see if you folks have any quick suggestions. I noticed that the engine has a slight backfire/sputtering on deceleration and would take a while to warm up so I was thinking that it was running a little on the lean side. There was also some minor bluing on the exhaust. I took the plugs out last night and they appeared to be fouled. They were coated with carbon (not wet oil). Now I was thinking that it might be running a little rich. I cleaned the plugs and re-gapped at .0035. The engine seemed to warm up quickly but the it was still sputtering a little when downshifting and decelerating. What do you think this is? yeah backfiring while decelerating or downshifting can mean that you are running a little rich. I adjusted the idle screws on my bike to make that problem go away. Makes sense since as you slow down you normally release the throttle to virtually closed anyway... I havent had that problem since. Except now I get backfiring while riding at highway speeds... methinks my carbs are being flooded and the float levels need to be adjusted.,,,

Nov 10, 2008 | 2008 Benelli Velvet 125

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