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Problem 4: Engine Hesitates, Stumbles, Lacks Normal Power


Troubleshooting steps for common problems that cause engine hesitation, ... An engine that hesitates, stumbles or misfires when accelerating or when it is under  ...

Analyzing Ignition Misfires - AutoTap


A few misfires are to be expected under these conditions, and should cause no ... or run rough, stumble when accelerating, waste gas and fail an emissions test.

YoExpert.com | What could cause my car to misfire under load, like ...


A misfire under load complaint can usually be broken down into 2 categories. The "soft" misfire, often called a surge, is commonly associated with fuel related ...

Problem Engine Hesitation - Auto Diagnosis Repair Help


Hesitation is when your engine misfires, stumbles or lacks power when you ... lean causing a misfire that produces a hesitation or stumble when accelerating or  ...

Engine Misfire | Fix it yourself!


If the engine is misfiring, it can cause all sorts of problems and leave you ... but also because the throttle plate opens when accelerating causing ignition coil or ...

Misfire and troubleshooting the engine - The MGA With An Attitude


Oct 31, 2005 ... If it still misfires under acceleration or at higher speed with richer mixture, then it has to be a spark problem. This is not what causes it to run bad ...

Engine misfiring? - Mobil 1


Engine misfires can be caused by a list of faults, but there are a few suspects that ... arrive only under load: It could as well show up at idle as when accelerating.

Tech Feature: Courage Under Misfire - Underhood Service


Feb 1, 2011 ... Diagnosing the cause of a misfire begins like any other complaint. .... from around 10 kV at idle to around 25 kV under hard acceleration, can ...

70's 350 Misfire under light/medium load - Hot Rod Forum ...


When driving under light acceleration, i rarely hear any sort of problem but under heavy ... A rich condition can cause strange misfires too.

Trouble Shooter - MOTOR Magazine Article | MOTOR Information ...


Engine misfire can have several distinct causes, or a combination of ... during initial throttle application and occasionally during steady acceleration. ... A failing or clogged injector or a weak fuel pump certainly could cause a misfire under load.

Popular Q&A
Q: What causes hesitation - misfire during acceleration on a Windsta...
A: Answer Replace the spark plugs wires and check for vacum leaks Answer The most common problem is loose\bad spark plug or wire. If that doesnt fix then it is pro... Read More »
Source: wiki.answers.com
Q: What would cause a misfire but only when the vehicle is under loa...
A: Bad plugs, bad plug wires, carbon build-up in the combustion chamber, incorrect fuel ratio, to name just a few. Consider a tuneup and a fuel system cleaner prod... Read More »
Source: wiki.answers.com
Q: Why does my truck misfire under acceleration its a.
A: Try some some fuel injection cleaner and check and make sure plug wires are in order. Read More »
Source: www.fixya.com
Q: What causes Engine Misfiring under boost only?
A: Start by cleaning the IDLE AIR CONTROL VALVE and throttle body to shOWROOM They FINE tune the AIR part of injection , and your FOOT only adds AIR to the engine ... Read More »
Source: answers.yahoo.com
Q: What would cause a 1999 Ford Expedition to cough and sputter then...
A: This sounds like it could be a simple "dead" or "fouled" sparkplug. Also could be a bad sparkplug wire. I would make a visual inspection of both or just replace... Read More »
Source: www.answers.com