What is rough idle

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  • Mostly its just the rough idle though. And where exactly is the regulator at? I checked the pressure on the pressure-test valve on the front fuel rail. GM regulators ...
  • The idle motor it self has quite a bit of delay to get the mass of the motor internals moving. The engine itself has the most delay from air fuel volume changes to resulting RPM changes. So say your engine is at 600 RPM and the idle controller makes a change to the ISM to increase the RPM.
  • May 22, 2012 · All injectors have worked fine, the only thing I know that is needing replaced is the pressure plate, but have there been previous instances with the lly and manual transmission that resulted in this. Like I said, no codes, no white smoke, just a rough idle and the fuel economy hasnt dropped at all. Really could use some help here guys.
  • Nov 13, 2012 · Hi Folks, My engine is now basically torn down. Still need to finnish cleaning out all the oil passages, but then block and heads are heading for the
  • The engine is rough on idle during startup. What causes a car to sputter and idle rough? A car's engine that sputters and runs rough while idling is an indication of misfiring of one or more cylinders if the cylinders misfire the vehicle's engine balance will be disrupted.
  • Any discussion of a cause of a1993 U300 rough idle? . This is a 1993 with a 6-94. Sometimes on start up the engine rpms fluctuate and the hyd fans cut in and out at the same time. I thought I had seen this discussed previously but not for this combination.
  • Rough idle is almost always caused by unmetered air entering the system. The top half of this motor wants to be sealed. That includes silly things like the gasket on the oil fill cap, the gasket on the oil dipstick, the grommets on the valve cover, the large intake plenum, etc.
  • Rough Idle & Surging? Jump to Latest Follow 1 - 13 of 13 Posts. J. Jeff04FXT · Registered. 2010 FXT Auto4 Joined Jan 8, 2006 · 409 Posts . Discussion Starter • #1 ...
  • Aug 16, 2010 · Still has the rough idle thing going on. Detroit cant seem to find a fix for it. Wondering if anyone else has same problems with the DD15 of has found a way to fix this issue. Also notice a slight surge/hesitation when getting on the power sometimes, not sure if this is linked to idle problems. They don't know
  • Hi, New here form Australia! I purchased a boat with a 2005 - 225HP etec. It had 120 hours when I purchased it and now it has 183 hours. Ever since I had it, it starts quite rough at a cold start when I am at the ramp. What I mean by that is when I fire it up for the first time at the ramp, it idl...
  • I don't think I've owned a 4-cyl Toyota or Honda that didn't occasionally, usually after a warm restart, run a little rough at idle and sometimes hesitate when accelerating from a stop. The problem, though, has never lasted more than a stop light or two. My '07 CR-V with a/c on, and after a warm restart, will briefly idle a little rough.
  • Car idle is rough Inspection Service & Cost. Yourmechanic.com A rough idle is one symptom of a clogged fuel filter. Failing Electrical Components: A problem or failure in the ignition system or various electronic components can cause a rough idle. If this is the case, the problem will usually get worse as RPMs increase.
  • My craftsman lawn mower with a B&S engine, after a pull start, runs rough for five to ten seconds as if having no power (bogging down), but smooths out. Not sure if this is a clogged fuel line, carburetor or something else going on. Usually I’ve read that it would be the other way around where it would start and then run rough or stall out.
  • May 25, 2007 · Re: Rough Idle, hesitation You may want to check out Bosch Premium plug wires as they come with heat shields, and a life time warrenty. They cost the same as the OEM plug wires.
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Fr legends mod apk 0.1 92000 5.4 I started last week with high idle coming and going. The pcv valve was making funny noises so I changed it and the air filter. Ran good for a day than started again, one morning after being parked outside ( 9 deg. cold!!!!) would not stay runny, idle would go to low, until I reved it high for ten minutes to warm up.
Jan 12, 2016 · Idle mixture adjustment on johnson 8hp 2 stroke 1994 johnson 6 hp lower end oil change wiring diagram 1995 6hp mercury who rebuilds yamaha 40hp power trim higher idle speeds how much compression should a 75 hp johnson have more fuel than was actually needed and result in an overly rich, rough running condition 1996 mercury 40 hp outboard won't crank in neutral 2002 mpi 350 mpi removal fuel ...
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  • The Toyota Camry is subject to rough and/or low engine idle, primarily when stopped with a load on the engine. The loaded condition is most commonly reported as idling in gear (drive or reverse), or with the air conditioning on. The idle may fall to about 500 rpm and noticeable shaking may occur. Removing the engine load by selecting neutral or turning off the AC frequently restores normal idle.
  • Aug 27, 2016 · The engine will run rough until all the throttle plate cleaner is burned off from the internal vacuum circuits. Shut engine off. Remove the ECM memory fuse for 10 seconds and then re-install. This will reset the fuel trim adaptive values.
  • Nov 30, 2005 · What was happening, as long as it was in open loop, it would run ok, but as soon as it went into closed loop, it would idle rough and stall. Also, check the grounds, particularly on a Vette. that can cause low voltage too, giving you the same problem.

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I have 37,000 on my 2006 ram 4.7. The truck always seems to run rough at idle but when driving no problems at all. it idles at about 500 without a/c on. I put new NGK plugs in last weekend and a new air filter but the idle issue is still there. Any suggestions or is that the nature of the engine?
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Dec 16, 2020 · When this sensor is sending voltage readings that are too high or too low, it can result in stumbling, surging at part throttle and light load, poor fuel economy, rough idle, and heightened emissions. 4. Coil pack
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I have a rough idle that started out of the blue. 04 excursion with 6.0. went out to start it one morning and it was a sluggish low rpm gross start. It used to fire right up like a champ and had the usually chug that smooths out once all the sensors sync up. Now besides the sluggish...
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Car idle is rough Inspection Service & Cost. Yourmechanic.com A rough idle is one symptom of a clogged fuel filter. Failing Electrical Components: A problem or failure in the ignition system or various electronic components can cause a rough idle. If this is the case, the problem will usually get worse as RPMs increase.
  • Rough Idle. Jump to Latest Follow 1 - 4 of 4 Posts. Ninabull · Registered. Joined 25 d ago · 1 Posts . Discussion Starter • #1 • 24 d ago. What would cause my ... Rough Idle & Surging? Jump to Latest Follow 1 - 13 of 13 Posts. J. Jeff04FXT · Registered. 2010 FXT Auto4 Joined Jan 8, 2006 · 409 Posts . Discussion Starter • #1 ...
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  • Rough engine idle is a common problem, of which the exact cause can be difficult to diagnose, as several factors may come into play. Also, How your engine idles is a good indicator of its overall health. The reasons for a rough idle can vary, with some being cheap, easy fixes and some requiring more complex repair procedures.
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  • Car engines are usually made to idle at a standard speed of 1000RPM. If your car has a rough idle, it may be because your idle speed setting is incorrect. This setting can be easily reset using a butterknife or similar tool.
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  • "Rough idle" is a bit subjective without like a video or something, I'd say these 2.4 engines have a very rough idle but that doesn't mean we are talking about and experiencing the same thing. The engine certainly lacks refinement, balance, and isolation in my opinion but that still doesn't mean whatever you have is normal. The idle mix screws only affect idle mix. IF you are carbon fouling you are not burning your air/fuel mix completly. This would be caused by a rich air/fuel mix, too cold spark plugs or short trips not warming the engine up enough.
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  • Aug 07, 2014 · My 2008 Gator 620i with 94 hours is having an idle issue. It has done this before and I changed the fuel filter air filter and plugs and it stopped. I tried the same this time and it still does it. Any thoughts would be helpful. Thanks.
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