Question about 1988 Ford F 150

1 Answer

1988 ford f150 302ci miss

Engine misses on cyl 1+2. have done comp test, have spark at plugs, and tested injectors and puls for injectors. all check ok. please help

Posted by on

  • yadayada
    yadayada May 11, 2010

    You are missing something, how about a head gasket leak between the 2 cylinders, are you saying that when you tested the injectors they had a signal from the ECM? did they spray fuel when engine was cranked? do the plug wire's check ok? Is the cam flat or something wrong with the rocker arms?

×

1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Possible bent push rod or colapised lifter
open the valve cover and start the truck make sure all the rocker arms are moving

Posted on Nov 18, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

94 transport engine miss


Have a compression test done on the engine. Check for burnt valve or bent valve on that cylinder.

Apr 28, 2013 | Cars & Trucks

1 Answer

1988 302 f-150 #5 cyl. not registering on compression test


Could be a broken rod that has left the piston up in the cylinder somewhere and not moving or there is a very large hole in it. With a spark plug out can you get a long screwdriver in there and push on it so see of the piston moves. Either way it sounds like a rebuild is in your near future.

Nov 05, 2012 | 1988 Ford F 150

1 Answer

What's your problem?engine has miss have put fuel cleaner in tank 2 wks


it sure can check for a fuel pressure drop on a gauge when triggering the injectors with a trigger tool

Jul 10, 2012 | 2007 Subaru Forester 2.5

1 Answer

Hi I have a 1999 1.8 ford focus its misfiring on cylinders 1


Remove the top cover on the valve cover concealing the coils. Remove and inspect the spark plugs, and replace as necessary. Start the engine and see if the miss has been eliminated. If the miss is still there, a problem could also exist in the wires or coil or even the fuel injector, which will all need to be addressed as the diagnosis progresses. A fuel injector will cause the same type of a miss if it sticks.

  • 2 Mist the spark plug wires, and watch for evidence of arcing to the cylinder head cover. This will indicate a bad wire. If this is visible, then replace the spark plug wires.
  • 3 Turn the engine off, and loosen the wires at the coil by giving them a twist and pulling them out of the coil. Leave them on the coils--you just want to loosen them a bit to make the next step easier.
  • 4 Start the engine. Using a pair of pliers with insulated handles, pull one plug wire out of the coil at a time and watch for a noticeable drop in engine RPM. The cylinder that has no drop or noticeable decline in RPM is the one causing the miss. Also when the wire is removed, watch for a good spark at the coil to the wire when the wire is held close to the coil. This could indicate a bad coil if the plug wire checks out fine.
  • 5 Check the suspect wire with the Ohm meter, and test for continuity through the wire. If there is continuity, the miss is still present and there is no spark to the wire when it is removed from the coil, replace the coil.
  • 6 Check the fuel injectors. If the plugs and wires are good and there is a spark at the coil to wire test, then checking the injectors is the next step. If this is fine, then a compression test should be done to locate an internal engine problem. Start the engine, and remove the electrical connectors to the fuel injectors one at a time and listen for a significant engine RPM drop. If one cylinder is found to make no difference or very little in comparison to the others, replace the injector.
  • Oct 19, 2011 | 2000 Ford Focus

    1 Answer

    Its like its missing,no power.maybe one cyl not working prop


    MANY THINGS WILL CAUSE MISSING AND NO POWER LIKE FAULTY TPS SENSOR. SOUND LIKE STOPPED UP FUEL FILTER, CLOGGED FUEL INJECTORS, CLEAN FUEL INJECTORS IF YOU HAVE ELECTRONIC FUEL INJECTIONS.OMIT IF YOU HAVE 2 BARREL CARBURETOR. DO A LITTLE TUNE UP.REPLACE DISTRIBUTOR CAP AND ROTOR. REPLACE SPARK PLUGS AND WIRES. A BAD IGNITION COIL WILL CAUSE ENGINE TO MISS.DO A COMPRESSION TEST CHECK FOR WORN CYLINDERS WILL CAUSE ENGINE MISS.

    May 31, 2011 | 1988 Ford Festiva

    2 Answers

    I have a 97 powerstroke that has a bad miss and is getting weaker on power


    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

    Apr 06, 2011 | Ford E-250 Cars & Trucks

    3 Answers

    99 dodge caravan #4 cylinder misfires, i replaced spark plug wires and spark plugs. Scanner showed #4 still misfiring, could this be the coil?


    It could very well be a bad coil pack,or you have low compression in that cylinder.If the compression is good then go with the coil pack,if not you may need a head gasket or an intake manifold gasket.

    Nov 07, 2009 | 1999 Dodge Grand Caravan

    1 Answer

    2002 ford ranger 3.0 is missing on 2 cyl plugs ok injectors ok new coilpack


    do a compression test,as the intake manifold,like alot of fords is no good.

    May 22, 2009 | 2000 Ford Ranger SuperCab

    2 Answers

    Miss on # 3 cylinder


    Check the plug and plug wire to #3, if they are ok test the fuel injector and test the compression on that cylinder.

    Nov 09, 2008 | 2002 Ford Mustang

    Not finding what you are looking for?
    Cars & Trucks Logo

    Related Topics:

    123 people viewed this question

    Ask a Question

    Usually answered in minutes!

    Top Ford Experts

    yadayada
    yadayada

    Level 3 Expert

    60960 Answers

    Colin Stickland
    Colin Stickland

    Level 3 Expert

    21949 Answers

    Fordexpert

    Level 3 Expert

    5331 Answers

    Are you a Ford Expert? Answer questions, earn points and help others

    Answer questions

    Manuals & User Guides

    Loading...