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Robert Martinez Posted on Mar 10, 2014

2007 c50 boulevard idles but sputter when reving throttle already replace fuel pump tps sensor and clean injectors

07 c50 misfiring bike will idle but won't respond already replace fuel pump tps sensor clean injectors bike still not working.

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Ernie Karlenzig

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  • Posted on Mar 10, 2014
Ernie Karlenzig
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Have you changed the fuel filter?

3 Related Answers

Anonymous

  • 53 Answers
  • Posted on Mar 29, 2009

SOURCE: 2007 Suzuki C50 Boulevard Oil weight

dear bldrnr the proper oil weight for your bic depends on the climate where you ride 20/50 is recommended for hot climates 10/40 is recommended for average temps. jim

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tim winter

  • 200 Answers
  • Posted on May 10, 2009

SOURCE: Fuse box, Suzuki Boulevard C50 2005

Should be behind one of your sidecovers. I f you did'nt get a manual w/yor bike then order one from your dealer. It's an invaluable tool....Good luck to you friend....Tim

Anonymous

  • 1 Answer
  • Posted on Sep 29, 2009

SOURCE: 83 suziki GS450 idle issues

the problem with the rubber was close but on the gs450 there is a metal insert that even if the rubber was rotted away the metal seals aginst the head so it cant leak. the problem is on the gs 450 suzuki used a cheap throttle cable that kinks behind the gas tank and kinks at the bend to the crabs under the set and the throttle system is a pull only not a dual cable pull push to always close the throttle. if you start the bike a wiggle the bend in the cable that comes out from the twist grip you will see it changes the idle. with either your finger or a screw driver and push the plate down on the carbs that the cable connects too. if the idle drops this conforms your problem. order a new cable from dennis kirk they have the revised one that has metal adjustment screw and metal clip in. better jacket casing as well.

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97 ford 4.0 idles smooth, accelerate there is a point where motor sputters if i back off and then push harder it smooths out.engine light on code says #3 sparkplug but seems to be firing fine at idle

There's no code that says, "#3 spark plug" but there is a code P0303 which indicates a misfire has been detected on cylinder #3. That misfire could be due to a spark plug, but it could also be a bad spark plug wire or CoP, a bad fuel injector, bad injector wiring, burnt valve, etc. Changing the spark plugs and wires would likely be the easiest and one of least expensive places to start, especially if the truck is due for a tune up anyway, but if that doesn't fix it, consider the fuel injector next. Just because it idles fine does not mean that the spark is strong at higher engine speeds.

You might also want to clean your MAF sensor and check the linearity of your throttle position sensor (TPS) to make sure the stumble is not due to a bad spot in the TPS.
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Having the same problem on a 2005 4.3l....... replaced plugs, dist. cap, coils, and cam sensor. o2 sensor is good. idles great till you push the gas, then it misfires. timing was checked it was fine. ...

Something is probably leaning out the mixture when you open the throttle. It seems that any ignition issues have been ruled out.

So, check the following: fuel filter clogged, low fuel pump pressure, the fuel pressure regulator could be stuck at the idle setting, the EGR valve could be stuck open, faulty throttle position sensor (TPS) or circuit, faulty manifold absolute pressure (MAP) sensor, faulty or dirty manifold air flow (MAF) sensor, faulty intake air temperature (IAT) sensor, and an air leak into the intake duct or manifold between the MAF and the throttle body. I think if the intake manifold gasket had a leak, it would be misfiring at idle.

Ask the shop if any of the above checks have already been accomplished. I'll bet most of them have, but one may have been overlooked.
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2006 Suzuki Boulevard C50 engine dies

Even though you probably don't have that many miles on the bike, or if you do have a lot riding time on it, it sounds to me like you need a valve adjustment. That's a high reving bike for that engine that works pretty hard so you might have 1 - 3 loose valves.
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