There's a small stumble/shake and what sounds a bit like an exhaust pop. It happens intermittently and not really consistent. The idle does surge every now and then but only 100rpm according to the crappy gauge.
The Car runs and starts just fine but it has a stumble right off idle that just about stalls the car out or sometimes it even does depending how much throttle you give it. I have let the car warm up and it will do it every time you give it a little throttle. Check the gap on all the spark plugs. I notice that my outboard motor tends to stumble or misfire when accelerating under load if the spark plug gap is greater than the specified or recommended spark plug gap. The coil assemblies of Mercury outboards (which are often referred to as "the stator") are somewhat infamous for being the source of problems. Hi, I am trying to figure out a way to log idle users off of workstations after 5 - 10 minutes of no use. We have 6 computers available to the public but people seem to have some sort of resistance to logging...
The symptoms of the problem include stumbling and sputtering at idle. In advanced cases, the Jeep will stall at every stop sign and will only run at high RPMs. Gas mileage will suffer since fuel will just be sloshing out at idle. Sometimes the idle will be turned up to a high RPM to avoid the problem.
You don’t want the accelerator pump to contribute significantly to the fuel ratio, so advance the throttle a bit, and then hold and check the AFR. Keep this up until you reach about 3000 RPM. If the mixture starts to lean out as you come off of idle and stays lean, you should immediately try a larger idle jet. Your Grizzly might be running just a touch lean right off of idle. Most bikes are set up this way to keep the air-sniffers in California happy... If you tweak that screw out (Counter-Clockwise) just an eighth to a quarter of a turn it might help.... I took the top shelter off on my 2012 but found the air temp sensor is on the L/H side of the air box. You may be able to hook it up by just removing the top and the L/H side of the top shelter. So far no stumble and I have tried to get it to. Oct 03, 2020 · A rough idle is easy to detect because your car starts to perform poorly and the engine sometimes stops running when idling. Often you can also feel strange vibrations in your car when you are sitting in the driver’s seat. Set idle speed adjusting screw, clockwise to increase rpm, counter-clockwise to decrease rpm. Idle rpm range should be 950 to 1050 rpms. Adjust idle mixture by turning idle mixture screw slowly clockwise until the engine runs poorly.
stumble off idle. Jump to Latest Follow 1 - 16 of 16 Posts. S. superfastyfz450driver · Registered. Joined Mar 22, 2003 · 671 Posts . Discussion Starter • #1 ...
Jan 25, 2019 · This opens the throttle blades to uncover what is called the transition slot. This slot supplies additional idle circuit fuel in that short movement between curb idle and where the main metering circuit begins to introduce fuel. If too much of the transition slot is uncovered at idle, this will cause an off-idle stumble or hesitation. 4.9 stumbling right off idle. Jump to Latest Follow. So did you Check the timing, check the idle speed control motor to see if its adjusted correctly i think you could take your IAT sensor and clean it...stumble off idle - Dodge 1995 Dakota question. Stumble off idle,you have a misfire at idle the ignition system is of concern this will include plug wires sparkplugs cap and rotorNow at least we have your engine idling correctly - hopefully with something more than 10 inches of manifold vacuum. This freeplay is often the source of an off-idle stumble.Sep 07, 2017 · Similar Threads - stumbles idle POULAN 5020av replaced carb idles but that's it dfphoto , Aug 21, 2020 , in forum: Brand Specific Section Nov 20, 2009 · therefore engine idle shutdown can NOT be disabled on vehicles that are California Emission Certified or California Emission Certified through a Dealer with Renkim. This procedure will put back the as-built data in the VID block therefore restoring the vehicle to as manufactured without the engine idle shut down feature. Apr 28, 2015 · 05 STi - hot idle stumble. Car: 2005 STi 7k on built motor (CP pistons / BC rods ) 3" TBE EWG up pipe w/ older style tial ewg APS 65mm CAI APS TIP ... HTML code is Off.
stumble off idle. Jump to Latest Follow 1 - 16 of 16 Posts. S. superfastyfz450driver · Registered. Joined Mar 22, 2003 · 671 Posts . Discussion Starter • #1 ...
Posted to Ford Driveability on 6/26/2008 10 Replies. Need help bad. I have been working on this expedition for a week now. No codes or pending codes. Vehicle stumbles at idle and under load like a missfire but not able to find missfire. Okay, the decel stumble problem was solved by replacing two governor springs and a fuel rod (governor linkage to IP rack). I think the culprit was actually just one spring that was weak. It was an idle speed set spring. It sets the throttle (IP rack) linkage to idle rpm when throttle is in neutral and when engine is not running. Off-Idle Stumble When Cold. Jump to Latest Follow. After sitting overnight or for a few days and engine is "stone cold", engine starts perfect and idles fine, but does not have a "fast Idle" sequence...Nov 12, 2018 · The car starts, idles and runs ok under gentle acceleration. My problem is a severe stumble on fast acceleration that does not resolve no matter how much adjustment I make to Accel Pump, or Fast Accel inputs. Current settings are Accel Pump 170 = 25.0 and Fast Accel 170 = 50.0 For the last few weeks the van has had an intermittent off-idle stumble on acceleration, and the problem has worsened to a bad idle at times. The problem is intermittent, and some days it does it, and some days not. We have tried to see a pattern (dry-wet days, warm or cold) and whether it was when the engine was warm or cold. Apr 07, 2016 · First off, sorry for the long post, but glad to be a new member! I've looked around for information about off Idle stumble or spit through the carb on the forum, there are a few that come close to what I'm experiencing, but not quite. I have a 4 speed, 383 with 440 heads, mild cam. Jun 17, 2012 · I have an off idle stumble with my Edelbrock carb and cant seem to cure it. I am using an Innovate LM2 to help tune, everything is fine @ idle, under load, and WOT. Anti-Idle: The Game is an Idle Game created by Tukkun and playable exclusively on Kongregate, first released in 2009. The game follows standard idle game …
Anti-Idle: The Game is an Idle Game created by Tukkun and playable exclusively on Kongregate, first released in 2009. The game follows standard idle game …
1.Losing compression in 1 or more cylinders - misfire when engine is coming off idle or sticking valve or broken spring causing valve not closing correctly. 2.Losing spark ( coil, wires, cap/rotor, plugs - recently inspected , all new). maybe voltage drop / power loss to coil itself, why only from stop ? not on highway or at speed. So I took my fiero in for emissions a couple weeks ago and failed for NOx, everything else was perfect, bearly even on the scale. Pretty clear cut case of a bad EGR valve, so I swapped a new one on. Directly after, I began to have a hesitation comming off idle (much like a carb with too small a shot in the accelerator pump would have). Also, there is a distinct loss of power. It seems as if yo May 25, 2013 · The idle issues are mainly related to dirtly injectors, injectors bleed-down and/or contaminated O2 sensors. As mentionned above, BG Prod are very good products. Use regulary, at service intervals, the famous BG 44K which will keep your injectors, valves, combustion chamber, o2 sensors and cats clean. Carbs came with 36 mm chokes,150 mains and 55F8 idle jets. Air mixture screws set to 2 1/2 turns, 3 turns is definately too rich. The 152's have a different thread (finer) than the earlier Webers in regards to idle mixture screws. I have the dreaded flat spot/stumble that I have minimized with the following, but it is still noticeable.
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May 25, 2008 · My ST1100 has developed a miss from just off idle all the way up through the RPM range. We have synched the carbs with a SK Flowmeter, changed spark plugs (NGK Iridium), changed fuel filter...and still a misfire/stumble persists. It is most noticeable just off idle with light throttle. It...
Mine would stumble off idle, but if I went heavier into the throttle, the accelerator pump would cover the lean condition just enough to start laying rubber.Sep 25, 2015 · Two seconds later slips back down. Then when I go to take the choke off the bike revs up to about 4000 and then dies. Any suggestions. I've had the carbs of a dozen times. It has the stock airbox. I've checked for leaks around the boots and have found none tho I'm not certain there isn't one. I've tweaked the idle screw and the pilot screws. Kongregate NGU IDLE, post your thoughts on the discussion board or read fellow gamers' opinions.May 01, 2009 · I found the factory set-up was a bit rich off idle on the 1405, for the 350. This was/is a daily driver 4x4 and a stock late 70's truck motor though, a bit different than our cars. When I went down to the 305 it was WAY fat, but I was very pleased with the customer service from Edelbrock's web site, they were spot on for the jet and rod sizes. He said running certain adapter plates could cause anomalies like that, along with erradic idle and off idle stumble. Having the 1" of open plenum before it goes into a dual plane manifold (we are all running Edelbrock Performers) causes a swirling of air/fuel and uneven flow to all the plenums. Aug 21, 2018 · Off idle stumbled, missfires and more than usual black exhaust. Drove it home no problem, and parked it until today, (was 2 weeks ago). Keep in mind, this is very much a recent thing. The stumble is not a a big one, it's pretty subtle. No backfires, or major coughing, just a not-as-smooth as before stumble. Engine Details: 1999 Explorer 302.
Pull the choke plunger out to full choke, then hit the start button. If the engine won't start, try giving it a little bit of throttle while you crank to lean it out. Once the engine is running,...
Jul 02, 2018 · Off-idle stumble and testing/calibrating/adding sensors If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. Another word for falter. Find more ways to say falter, along with related words, antonyms and example phrases at Thesaurus.com, the world's most trusted free thesaurus. Idles fine and when under load it seems ok, but stumbles for a second or two off idle. If I blip the throttle quickly in neutral/park the rpm's it definitely stumbles a bit but evens out after a few seconds.Jun 17, 2012 · I have an off idle stumble with my Edelbrock carb and cant seem to cure it. I am using an Innovate LM2 to help tune, everything is fine @ idle, under load, and WOT.
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I'm having a hard time getting rid of a "stumble" that occurs when I throttle off of idle. It is most prevalent if I free rev the engine. It also happens when I take off in 1st gear. Its like a misfire for a second. When I first started tuning this car a couple months ago I figured I could just fix it without accel enrichment.
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Again the obvious first place to look for an off idle stumble in any carb. is the accelerator pump circuit. Interesting- I guess I will tear it down again and see if 9/16 works better. Have a feeling that I need more fuel in the bowl to fill the accel pump section a little more.
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It seems to run pretty good under acceleration, but it sometimes stumbles at "coasting" road speeds. I cleaned the 10 pin connector, the car now idles smooth.
Just brought home a week ago a 96 Intruder 800 with 13k miles on the clock and I noticed that she idles perfect - and runs out well but she stumbles a bit at low rpm (just off idle) but get the revs up a bit more (no tach so don't know what she's turning) and she runs out great again. Now I... A simple (quick test) is to crank up the idle to 900 or so and fatten up the idle mixture screws as others have suggested to see if something in transition circuit is not keeping up. If nothing changes, 1) check for vacuum leaks on intake/carb. 2) Clean the entire carb, replace all gaskets if you have not.
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May 30, 2016 · I've had an off-idle stumble with my 4MV quadrajet since I bought the car a few years ago: at a stop light / stop sign, pressing the throttle more than a little bit will cause the engine to stall. By feathering the throttle I can increase RPMs a bit, and then the throttle will work fine without stalling. Once it's off idle, it runs like a champ.
A simple (quick test) is to crank up the idle to 900 or so and fatten up the idle mixture screws as others have suggested to see if something in transition circuit is not keeping up. If nothing changes, 1) check for vacuum leaks on intake/carb. 2) Clean the entire carb, replace all gaskets if you have not.
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1. on idle it doesn't return to a low idle quickly when warm. When cool (1 minute idle) with the choke off, idle is good. 2. as the engine warms the off idle stumble gets worse. I believe it to be a too lean condition as if I open the air box a little (using a wedge and tape on the air box cover) the stumble is worse.
On/off IAC valves give you two choices: On fast idle, or off it. You’d set the idle speed set screw to your desired idle speed with the engine warm, and if your on/off valve is big enough, turning it on will keep the engine from stalling on a cold start. No closed loop control is possible.
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Dec 10, 2009 · 3. Turn ignition switch to “OFF” wait at least 10 seconds. Make sure that the throttle valve moves during above 10 seconds by confirming the operating sound. Idle Air Volume Learning (Throttle Position Learning) It is better to count the time accurately with a clock. 1. Perform “Accelerator Pedal Released Position Learning”. 2. Jun 01, 2012 · - Back idle screw all the way out till throttle plate was completely shut - Install TPS Sensor and rotate to the right just till it makes contact with the throttle plate shaft roll pin - Tightend bolts and did a TPS reset via ECMSPY - Set idle 1050 RPMS
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Off-idle Stumble Troubleshooting Advice. Jump to Latest Follow. A seemingly unimportant point is the idle speed, is it set to the recommended 950-1050rpm when hot? we sometimes find the off-idle...I have a wideband, but i have not drivin with it yet, i did set the idle to a 14.7 gas afr again, the stumble happens w/ a light throttle and light load, i dont think it is the accelerator pump circuit because the stumble happens at cruise at 2300 rpm and below.
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Letting off gas, idle stumbles almost stalls when car hot and AC on. Jump to Latest Follow 1 - 15 of 15 Posts. Y. yacoub · Registered. Joined May ... Off idle stumble. Jump to Latest Follow 1 - 14 of 14 Posts. P. predator_or_prey · Registered. Joined May 11, 2008 · 31 Posts . Discussion Starter • #1 • Mar 8 ...
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Apr 09, 2015 · I took my points cover off and I noticed that the isolator was loose. and when i move it down it crosses over with will cause the coil to fire every time this happens. Now i am not sure why it would idle fine then stumble when revving up the engine unless the vibration is causing it to cross over. I am hoping this the problem.