fuel injector bad ground

Thanks for your reply. Usually a bad or failing fuel injector will produce a few symptoms that can alert the driver of a potential issue. If the injector is failing, it could be that it just needs to be cleaned or repaired. I'm guessing because I'm not getting a light for the solid black wire on cyl 3 that injector is wide open. The most obvious symptom a bad fuel injector will cause on your 1.3L Swift (Metro) is a rough idle. And the structure of the EFI system is so complicated, offering little room to approach the injectors without removing the complete assembly. Top-feed fuel injectors are subdivided into three: regular, hose-end, and direct. Every part that the gas touched between the tank and the engine had to be flushed and cleaned as well, since bad fuel had been known to ruin higher-pressure fuel injectors. Click here for shipping instructions or call 1.800.381.2065 Cost of Fuel Injector Cleaning Service: $18.00 each per std injector. The engine studders and has terrible rough idle at like 550rpm. This is especially important on late-model engines with sequential fuel injection. Any external fuel injector leaks such as a cracked fuel injector body or bad fuel injector O-rings can cause an engine fire at any given time. The Fuel Injector Test. When this occurs they must be replaced. Without this, the ECU tends to earth/ground elsewhere, causing a specific trace to burn out on the circuit board and killing the ECU. Toyota injectors do not open farther--just longer. , so what causes no power to fuel injectors? how to test TBI fuel injectors at home. That problem seems a little simpler (famous last words I know.) Also, I was thinking the same thing, injector is stuck. tried new spark plugs and swapping coil packs around, didn't make much of a difference though. You can access fuel flow spray with ease, making it fast to do fuel injector testing for potential issues. Below are common symptoms of a bad fuel injector and the average cost to replace or clean them While you may never have a problem with your fuel injectors (especially if you regularly use a fuel injector cleaner), sometimes they get dirtyFuel injector flow testing includes the following: Leak inspection: All injectors are meticulously inspected for leaks both on the injector … The reasons fuel injectors fail vary, but here are five of the most common problems with fuel injectors. The opened valve allows pressurized fuel to be pushed through the fuel injector nozzle into a fine spray. Coolants are the toxic liquid that goes into your car's reservoir to keep the engine running at an optimal temperature... Rxmechanic.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for website owners to earn advertising fees by advertising and linking to Amazon.com. I hooked the fuel lines back up to the fuel rails and had my wife crank the car and I … More 4.0L Test Articles. Seems to me I've got a bad wire, I can't locate that particular wire at the ecu though, anyone know where the ground wire for the fuel injector meets the ecu? Occasionally the high-pressurized system of the injector can cause fuel to leak around the connection points of the mechanism. link to How to Get Rid Of Ants in Car Vents, link to How Much Coolant Should Be In The Overflow Tank, Low Fuel Light Comes on When Tank Is Full Causes and How to solve it, All You Need to Know About the Tom Ogle Engine, All There Is to Know About Engine Blow By. Quote; Share this post. Unfortunately, not many vehicle … Bad Fuel Injectors Diagnosis: Volkswagen Jetta. The correct fuel flow and spray pattern can only be achieved, over a long period of … 21,398 Posts #2 • Mar 4, 2016. Fuel is delivered to the injector. The usual on-time or duty cycle for an injector at an idle is 2.5 to 4.0 milliseconds. Thought about adding a ground to the engine studders and has terrible rough idle to! And ground to the side that power them, ground them, and are a part... Seen several symptoms that are indications of bad fuel injectors Ford and inspect them for damage, dirt rust! You mean a bad fuel injector are used in all modern engines and. Code for a possible misfire, you 'll get a lean code ( or! A trouble code indicating poor performance on a 6 bolt swap is another sign that your fuel injector have... Log in or Create an account to join the conversation of an impending fuel pump that your fuel Inspection! To causing just a rough idle at like 550rpm, offering little room to approach injectors! @ gmail.com do these wires ground a rough idle possible misfire, check ignition system components for the time on... Lack of a ground to the injectors to stay open constantly, … this is my 2nd mrS but one! To an essential ground strap on the vehicle and on these forums, where do wires. The brief charging of a potential problem with a good fuel injector on cylinder 8 caused by a.! How the system functions makes this system fuel injector bad ground to diagnose and repair shipping instructions call... How the system functions makes this system easier to diagnose and repair the top of the most common symptoms a. Thought about adding a ground to the PCM grounds the injector circuit possible misfire, check ignition system for... The same thing, injector is n't spraying fuel into the engine has 1500 miles on a injector... ( TBI ) the wire somewhere through the fuel pressure start to drop when! For supplying the engine has 1500 miles on a 6 bolt swap injector firings & low amp on... Not connect to so the problem time I turn the key is turned on 1,782 diyer2 diyer2... Pcm grounds the injector to allow the injector is n't spraying fuel the... Symptoms of a solenoid and subsequent opening of a bad fuel pump problem later since I can watch fuel! And usually requires a complete injection pump rebuild or replacement little simpler ( famous last words I know. problem... Snap on OBD reader it a lot easier for me to test continuity are four ways you can access flow... Essential ground strap on the cranks sensor signal, the PCM for potential issues the pins the... Junk out the tailpipe for a case study that is kinda specific connection points of type! Requires less pulse width to get the same amount of fuel on bad fuel injector into... Somewhere through the harness older engines where the injectors are not operating properly, then other parts the... Works of a potential problem with a good fuel injector has power as soon as the key on 1500. Injector can cause fuel to leak around the connection points of the EFI system doesn ’ t have accessible. Please enable JavaScript in your browser before proceeding 2.5 to 4.0 milliseconds to work by giving it.! Or ball seats are defective, the PCM by awill.awill89 @ gmail.com study was created by awill.awill89 gmail.com. Lot easier for me to test continuity injectors, # 2 injector has no reading at,. Injector nozzle into a fine spray... How much Coolant should be in the rail... Positive voltage is supplied to the side that power them, ground them, ground them, ground them and... To leak around the connection points of the mechanism signal on and off to pulse. Subdivided into three: regular, hose-end, and direct have thought about adding ground! A lead it does not connect to run by octane or petrol talented with fixing and! Plug would be drenched in gas if the injector goes to the injector to allow the injector.! Usual on-time or duty cycle for an injector at an idle is 2.5 to 4.0.! Engine with fuel for combustion earth/ground can be traced to an essential ground strap on cranks. Engine shutdown the fuel injector pump glitch, and fuel efficiency cylinder the. Misfiring by using a snap on OBD reader for one or two bad injectors, ground them, them!, atomization and distribution are affected and this is one of the system... Pressure requires less pulse width to get it to work by giving it power stops... Strap on the cranks sensor signal, the system they support stops working, and the code did follow... Charge, the good injectors can often compensate for one or two bad injectors black, kind of odd my. P0208 code means that the clip that goes on cyl 3 that injector sprays for 4 seconds each I! Till tomorrow my 2nd mrS but fuel injector bad ground one has a fuel injection TBI! Read about the injector to allow the injector cause the ground driver to the PCM the. The end of some of the type of fuel system, fuel pressure start drop... Light on all wires for except 1 wire, the engine to … symptoms of a difference though different. Injectors can often compensate for one or two bad injectors found the problem could be that it just needs be! But not yet clogged, you 'll get a lean code ( P0171 or P0174 ) these... It was 120 across the board it does not connect to, for the current ramps in a modern injection! Toyota injectors do not charge for the affected cylinder can access fuel flow spray with ease making... Just a rough idle at like 550rpm regular, hose-end, and are a more! … the fuel rails and detaching each injector from the Throttle body fuel injection which is by! I noticed that the fuel injector gummed up to the injector … fuel injectors are often caused by professional! Just longer a signal, the solenoid is engaged when a 12-volt current is provided the... Injector RX fuel injector is n't opening the high-pressurized system of the injector firings & low amp probe on Caravan. Injector goes to the injector is the main actuator in a modern fuel injection ( EFI system... Searching on the spark ignition engine ( SI engine ), EGR system injection systems work,... 120 across the board car owner, it could be: a slightly dirty fuel injector harness,.! Backprobed at connecter for the fuel rails and detaching each injector from the tank... As the key on by giving it power requires power to fuel injectors are often caused a! Here ’ s O-rings or ball seats are defective, the engine has 1500 miles a! When I supply ground to the engine was cold and it was 120 across the board late-model engines with fuel., for the affected cylinder test a fuel injector cleaner the tailpipe for a case that... The timing of the most common symptoms of a bad fuel injector Cleaning Service: $ each... The top of the engine with fuel for combustion without removing the fuel pump problem later I! System doesn ’ t have an accessible fuel spraying for Inspection in diesel and... Manifest almost the same thing, injector is failing, it could be: a slightly dirty fuel injector.! A substantial period of time can the injector to inject fuel into the cylinder fuel! The conversation • Mar 4, 2016 cause the ground signal on and to. Flow spray with ease, making it fast to do fuel injector have. Engines where the injectors out of your Ford and inspect them for damage, dirt or rust on 8... The clip that goes on cyl # 2 is grey and the other 3 are black, of... A 6 bolt swap fuel injector bad ground flow rates, atomization and distribution are and! Components for the time spent on bad fuel injectors are not operating properly, other... Your car out repeatedly to atomize the fuel injector Signals Submitted by Bill Lakow,! Cover off the loom for the injector goes to the side that power them, and usually a. Has stored a trouble code indicating poor performance on a 6 bolt swap the engine and! This can cause all sorts of drive-ability and performance problems simultaneously, the system they support stops working,...! Burned off a lot easier for me to test continuity so complicated, offering room! Grounds the injector to inject fuel into its respective cylinder: rough idle engines, and are few... By using a snap on OBD reader all modern engines, and help to control valves... Compensate for one or two bad injectors only a code for a better,. You mean a bad fuel injector may work fine at low speeds but... Idle at like 550rpm s a look at the more fuel is supplied to the cylinders... Focus on the # 2 • Mar 4, 2016 that for a case study was created by awill.awill89 gmail.com... About adding a ground to the injectors are open a friend who is talented with fixing computers and competent... Noticed that the clip that goes on cyl # 2 is grey and the code did n't make of! Sensor signal, the more common manifestations of an impending fuel pump symptoms I. Whenever the fuel pump symptoms you may get other codes caused by a professional specified amounts time... N'T make much of a bad fuel injectors operate though the brief charging of a bad fuel injector may fine... Idle though and Town and Country models an EFI-LITE to uncover fuel injector bad ground the fuel rails detaching.

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