Question about 1984 Ford F 150

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Engine sluggish My 6cyl 300cci engine seems awful sluggish. I have change distributor cap, spark plugs, carburetor gasket's, fuel filter, spark plug wires to name a few and I am only running 18 inches of vacuum. I have aTFI-IV ignition system (no vacuum advance) and my vacuum gauge shows late ignition timing. Can I tweak the distributor a little to see if that brings the vacuum up?

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By all means tweak the distributor and adjust the idle to get your vacuum up to where it should be. At the same time have you checked the timing with a timing lite? If you have and it is bang on you may want to consider taking a look at your timing chain in the near future as it may be stretched a little. But before you do that, check your compression. hope that this helps and that you take the time to rate this information.

Posted on Oct 26, 2008

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My 1985 Skyhawk won't start. Cranks well but no start


BAD COIL OR IGNITION MODULE INSIDE DISTRIBUTOR RUN OHM TESTS TO VERIFY

Dec 08, 2012 | 1985 Buick Skyhawk

1 Answer

Engine swings but does not start


Your testing so far seems to exonerate components #1 to #5, and #13.
Since you've already replaced a number of parts to address the problem, I thought I should try to be comprehensive:

Priority Action Part Type Cause
1 Inspect Ignition Switch - Improperly Connected or Faulty Ignition Switch.
2 Inspect Battery - Battery Discharged or Faulty.
3 Inspect Battery Cable - Coroded, Broken, Shorted or Poorly Connected Battery Cable.
4 Inspect Starter Solenoid - Starter Solenoid Faulty.
5 Inspect Starter Motor - Starter Motor Faulty.
6 Inspect Wireset - Worn or Damaged Spark Plug Wires.
7 Inspect Ignition Coil - Faulty Ignition Coil.
8 Inspect Distributor Cap - Loose, Cracked or Worn Distributor Cap.
9 Inspect Spark Plug - Incorrectly Gapped or Fouled Spark Plug(s).
10 Inspect Distributor Cap and Rotor Kit - Loose, Cracked or Worn Distributor Cap, or burned rotor contacts.
11 Inspect Fuel Tank - Fuel Tank Empty.
12 Inspect Carburetor - Worn, Faulty or Damaged Carburetor.
13 Inspect Fuel Pump - Faulty Fuel Pump.
14 Inspect Fuel Pump Strainer - Fuel Pump Strainer Clogged.
15 Inspect Fuel Filter - Fuel Filter Clogged.
16 Inspect Air Filter - Air Filter Clogged.
17 Inspect Fuel Injectors - Fuel Injectors Clogged/Inoperative
18 Inspect/Test PCM - Powertrain Control Module (Computer) defective - sending incorrect ignition/timing signals to fuel injectors
19 Inspect Fuel Rail - Fuel Rail leaking/broken causing inadequate/low fuel pressure.

Use a HEI (High Energy Ignition) tester to see if you have spark to your sprak plugs - if not, suspect Ignition Coil, Distributor Cap, or Distributor Rotor.

Nov 21, 2011 | Cars & Trucks

1 Answer

I have a 1990 mitsubishi might max it wont run smooth unless you keep your foot on the gas and keep the rpms up a little bit and it wont drive cause it stalls everytime you try to move it. ive replaced the...


You've already eliminated the spark plug & wireset, distributor cap & rotor.
Sounds like your car needs a tune-up, specifically, the PCV (positive crankcase ventilation) valve, and/of the EGR (Exhaust Gas Recirculation) valve.

Components checked/replaced during a tune-up are:
air filter
motor oil
motor oil filter
breather filter
fuel filter(s)
fuel strainer
PCV valve
EGR valve
spark plugs
spark plug wires
ECM or distributor cap & rotor
cabin air filter
transmission oil filter
transmission oil
engine coolant
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Troubleshooting the no-start condition - from the 1990 Mitsu Mighty Max Repair Manual:

Priority Action Part Type -- Cause
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2 Inspect Battery Cable -- Corroded, Broken, Shorted or Poorly Connected Battery Cable.
3 Inspect Distributor Cap -- Distributor Cap Cracked or Burned.
3 Inspect Fuel Filter -- Clogged or Dirty Fuel Filter.
5 Inspect Ignition Coil -- Faulty Ignition Coil.
6 Inspect Wireset -- Worn, Damaged or Faulty Spark Plug Wire(s).
7 Inspect Spark Plug -- Incorrectly Gapped or Fouled Spark Plug(s).
8 Inspect Starter -- Starter Motor Faulty.
9 Inspect Fuel Pump -- Low Fuel Pressure.
10 Inspect Solenoid Switch -- Faulty Starter Solenoid Switch.
11 Inspect Fuel Pump Relay -- Faulty Fuel Pump Relay.
12 Inspect Fuel Injector Pressure Regulator -- Faulty Fuel Injector Pressure Regulator.
13 Inspect Ignition Switch -- Improperly Connected or Faulty Ignition Switch.
14 Inspect Starter Drive -- Faulty Starter Drive.
15 Inspect Fuel Injector -- Dirty or Worn Fuel Injectors.
16 Inspect Fuel Pump Strainer -- Clogged or Dirty Fuel Pump Strainerat.
17 Inspect Engine Control Computer -- Incorrect Operating Information Being Delivered and Sent From The EEC.
18 Inspect Fuel Tank -- Fuel Tank Empty.
19 Inspect Carburetor -- Carburetor Flooded or Faulty Choke.
20 Inspect Distributor -- Worn, Loose, or Incorrectly Installed Distributor.

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2 Answers

My truck is extremely sluggish and when reved up it has several misses. The sluggish, n the standard, is at the beginning of the gear..at the end of the gear it gains its power or fuel. Where or what is...


IF YOU GOT GAS ENGINE.PROBLEM COULD BE STOPPED UP FUEL FILTER OR WEAK FUEL PUMP.LOW ENGINE COMPRESSION.BAD SPARK PLUG + WIRES + ROTOR AND CAP ALSO BAD COIL CAUSING WEAK SPARK.IF YOU HAVE DIESEL ENGINE SLUGGISH.PROBLEM COULD BE RESTRICTED AIR FILTER DIESEL.INJECTION PUMP TIMING OUT OF ADJUSTMENT.FAULTY EGR AND EPR VALVES.RESTRICTED EXHAUST SYSTEM STOPPED UP MUFFLER PLUGGED FUEL FILTER.PLUGGED FUEL TANK DUE TO FAULTY FUEL CAP.MISSING PROBLEM COULD BE CAUSED BY DIRTY OR FAULTY INJECTORS. THE INJECTION PUMP TIMING OFF. AIR IN FUEL.OR FUEL RETURN SYSTEM RESTRICTED.STOPPED UP FUEL FILTER.OR USING INCORRECT FUEL OR ITS CONTAMINATED.

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1 Answer

Van won't start not even when jumpstarting, tried new spark plugs, air filter, fuel pump, and fuel filter what else could it be?


If a gasoline engine has Fuel, Spark and Compression it will run. You can tell if this van has fuel by removing the air cleaner and looking down the throat of the carburetor. Push the throttle all the way open while you watch. Fuel should squirt into the carburetor throats. If it does not you have a fuel issue. If it does check for spark by pulling a plug wire off one of the spark plugs in the engine. Push an old spark plug into the boot and ground the steel body of the plug against the block. Have someone turn the engine over. You should see and hear a spark jumping across the gap in the plug. If not you have an electrical problem. Fuel could be an empty tank or an airlock in the fuel line. Electrical could be any number of things, most likely a dead coil or a loose wire on the distributor cap. The coil is inside the distributor cap and is not expensive and not hard to change. If the truck has not been driven in a while it is possible that the fuel is dead. If you have fuel at the carburetor that smells like a dead rat you must drain the system and start over with fresh fuel. Good Luck.

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1 Answer

Car running sluggish and rough. multiple misfire. excessive fuel consumption... already replaced sparkplugs, fuel filter and valve cover gaskets. as well as spark plug wires.. what could be the issue..?


Hi there, sounds like this car might have either a bad coil pack or the distributor cap has gone bad. 3 most important things are air, fuel and 12v power. Seems your getting all three but one of them is giving you trouble. Sounds like spark. Try a new distributor cap or a new set of coils and see if that solves the problem.

if it isnt the spark it has to be fuel or air which would lead to lack of fuel pressure which can cause sluggish behavior or the air sensor in the intake if there is any is not working properly and the computer is running on a safety fuel map that is a base map used by manufacturers which burns alot of fuel but stops the engine from destroying it self. Check the coils o the sensors.

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1 Answer

When idling my 2003 Acura TL the engine seems to want to almost die, also when i got on the freeway it seem to pull hard and **** like it was having trouble shifting into 5th gear. It also seems to run...


You may need to change the coil pack(s) or modular. The modular is what the coil pack(s) mount to. I'm not familiar with that engine so you may have a 3 piece coil pack, or a 1 piece. (If it doesn't have a distributor). You may first try replacing the coil wire. There is a good chance that is loose, or bad. It could also be the coil itself. Try the coil wire and if it still acts up, then try the others. Also, when you changed the plugs, did you put new plug wires? When I do a tune up on my vehicles, I change the plugs, wires, distributor cap and rotor, (coil pack,modular), whichever is equipped, oil, oil filter, tranny fluid and filter with gasket, valve cover gaskets, oil pan gasket oil filter, and fuel filter. Try changing the fuel filter as well, as plugged or dirty fuel filters can cause stall outs. I hope this information helps. Thank you for choosing fixya.com for answers.

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2 Answers

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