Question about Ford E-250
As far as I know the powerstroke engine has never included gas as a fuel and therefore does not use sparkplugs. In order to diagnose it should be scanned which can be done with an OBD II scanned and if possible an injector solenoid test which can be done with a higher end scanner that you will have to see a shop to have done. but injectors are a common thing between 250k and 300k km. you could have it diagnosed and replace only the faulty one. but you are better off doing all 8 if you find more than 1 bad for the amount of teardown involved
Posted on Apr 30, 2011
The first thing i would do is a compresion test remove the spark plugs attatch a compresion guage this will tell u if one or more cylinders are low on compression this can be caused by a number faults.if the comp test is ok then replace the spark plugs if that doesnt fix the miss remove the spark plug leads and sit them back on the plugs start the engine then using insulated pliers remove the leads one at a time the bad ones wont make the engine run different when removed if all leads are good then replace the coil or coilpack if the engine runs seperate coils for each cyl then remove the bolts holding them down start the engine and remove them one at a time if they are faulty the engine wont change if the coil is good the eng will run worse when its removed if your engine runs a distributor the rotor button and cap may need replacing a damaged or corroded cap can cause a miss and loss of power if all these things are ok then you may have a fuel problem if the engine is fuel injected and you can remove the plugs without to much trouble start the engine remove and replace plug and as with the spark plg leads the faulty injector wont make any difference to how the engine reacts. if when dissconected The plug leads or injector that is working ok will cause the engine to run worse when reconected it will run better if it makes no difference its not working and needs cleaning or replacing
Posted on Apr 06, 2011
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Posted on Jan 02, 2017
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