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No spark on rear cylinder only. It had been worked on previously. Found wires cut & repaired.

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A bad repair job might cause no spark that and moisture

double check the connections and cover with tape

Posted on Mar 26, 2011

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6ya6ya
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Posted on Jan 02, 2017

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1997 Ford Taurus wont start no spark to the spark plugs


Changing parts is not how you repair a vehicle

You test systems & components using wiring diagrams

No diagrams & reference material,how would you know
what your working on?

Dec 17, 2012 | 1997 Ford Taurus

1 Answer

Have 1994 toy. truck with v6, when choke goes off the engine misses


Hey 94 TOY...

When did the problem start? Before you changed the wires and plugs? Or did it start, AFTER you changed the wires and plugs? Did the problem remain the same BEFORE & AFTER you made the changes?

1 - If the TOY ran fair to Okay before you did the work, then you may have done something wrong when you made the cahages. Check for correct plugs and firing order. Check for cross wiring. With engine runing pull one plug wire off each plug one at a time. Each pulled plug wire will slow down the engine. When you pull a plug wire that doesn't react and does not make any change ON or OFF that cylinder Plug.
Then that cylinder is not firing.

2 - Check for spark at that wire. If you do-not have Spark there, But the other wires do... the wire going to that cylinder is BAD.

3 - If you have the correct firing order and spark at all cylinders then the cylinder that did-not change the speed of engine has a compresstion problem. Bad valves, Piston or rings are bad... Major engine work and Major repair bill for the repair job.... GOOD LUCK....

Oct 15, 2012 | 1994 Toyota Pickup

1 Answer

1987, 1340 EVO missing on rear cylinder


Hi Robert, and the usual suspects are:
1. Spark plugs in bad condition or partially fouled.
2. Spark plug cables in bad condition or leaking.
3. Spark plug gap to close or to wide.
4. Faulty ignition coil, module and or sensor.
5. Battery nearly discharged.
6. Damaged wire or loose connections at battery terminals especially the ground cable at BOTH ends, ignition coil, or plug between ignition sensor and module.
7. Intermittent short circuit due to damaged wire insulation.
8. Water or dirt in fuel system, carburetor or filter.
9. Fuel tank vent system plugged or carburetor vent line closed off.
10. Carburetor controls misadjusted.
11. Damaged carburetor.
12. Loose or dirty ignition module connector at crankcase.
13. Faulty MAP, CKP, and or CMP sensors.
14. Incorrect valve timing.
15. Weak or broken valve springs.
16. Damage intake or exhaust valve.
For a prime suspect please visit website below and good luck:
Harley Davidson Wiring Diagrams and Schematics

Oct 13, 2012 | Harley Davidson FLSTC - FLSTCI Heritage...

1 Answer

There is a misfire in my engine, changed plugs & wires. now it reads that the fuel leveling sensor is bad, will this help?


If there is a misfire, the cylinder that it is misfiring in will be recorded as a code in the computer.

Have the car scanned to determine which cylinder is bad. Then, replace the coil pack going to that cylinder.

Ignition Coil Pack Removal & Installation 2V Engine To Remove:
  1. Twist the spark plug wires off of the ignition coil towers. Mark the spark plug wire positions so they can be installed in their original positions.
  2. Disconnect the electrical connector from the ignition coil. CAUTION
    When removing the spark plug wires, a slight twisting motion will break the seal and ease removal.
    coilconn.gif

  3. Remove the mounting screws and remove the ignition coil.
To Install:
  1. Position the ignition coil pack on engine.
  2. Install mounting screws and torque to 53 in-lbs. (6 Nm). coilbolt.gif

  3. Connect ignition coil pack electrical connector.
  4. Match previously marked spark plug wires to ignition coil and install.
4V Engine To Remove:
  1. Remove the RH cowl grille cowlpic.gif
  2. Remove the screws and the water shield
  3. Mark spark plug wire positions
  4. Disconnect the spark plug wires from the ignition coil CAUTION
    When removing the spark plug wires a slight twisting motion will break the seal and ease removal.
  5. Disconnect the ignition coil electrical connector coilconn.gif

  6. Remove the mounting screws and remove the ignition coil
To Install:
  1. Position ignition coil pack. Install mounting screws and torque to 56 in-lbs. (6Nm)
    coilbolt.gif

  2. Connect ignition coil pack electrical connector
  3. Match previously marked spark plug wires to ignition coil and install
  4. Position water shield and install screws
  5. Install RH cowl panel
prev.gif next.gif

Aug 11, 2010 | 2002 Ford Taurus

1 Answer

Rear cylinder problems


Hi Pj31alby, and the usual suspects are:
1. Plugs in bad condition or partially fouled.
2. Spark plug cables in bad condition or leaking.
3. Spark plug gap to close or to wide.
4. Faulty ignition coil, module and or sensor.
5. Battery nearly discarged.
6. Damaged wire or loose connections at battery terminals especially the negative cable at "BOTH" ends, ignition coil, or plug between ignition sensor and module.
7. Intermittent short circuit due to damaged wire insulation.
8. If your bike has a CKP sensor you must leave both plugs in
head and check for spark with a 3rd plug.
For a prime suspect please visit website below. Good luck and have nice day.Harley Davidson Wiring Diagrams and Schematics
Big Twin Carb EFI DTC Intructions codes Harley Davidson Forums Harley...

Jul 25, 2010 | 2000 Harley Davidson FLHT Electra Glide...

1 Answer

1999 Land Rover Discovery II engine miss


Observe the engine running in the dark to see if there are any spark jumps from the wires or coil, you may have a carbon track.....

Feb 16, 2010 | 2001 Land Rover Discovery Series II

1 Answer

After shutting down the saw the flywheel locked up. I can put wrenchon the sproket and force it but not smoothly. Is it repairable? This saw has several hundred hours of running time over 25 years with no...


I think it was very hot and you have metal transfer from the piston to the cylinder. Even if run with a rich fuel mixture an undiscovered air leak can cause a run lean condition. If the piston and cylinder have metal transfer it is often less expensive to replace the saw than to repair it.
Run Lean:
Was this saw perhaps operated in a lean condition (metal transfer from the piston to cylinder wall)?
· Remove the spark plug wire and plug. Remove the muffler, hold a light at the plug hole and inspect the cylinder through the exhaust port. Is it smooth and shiny or does it appear speckled with dull gray spots or smears?
· Pull the starter slowly, inspect the piston as it rises and falls. Is it a dull gray without scratches and gouges?
· Hold the light at the exhaust port and look through the spark plug hole, inspect the cylinder above the exhaust port. Is it shiny and smooth or speckled with gray spots or smears?
Any spots or smears on the cylinder or deep scratches and gouges in the piston indicate the saw was operated in a lean condition. Repair of this on a home owner quality saw often exceeds replacement cost. A repair estimate by an independent saw shop should be considered.
A more thorough explanation can be found here:
http://www.madsens1.com/saw%20piston%20fail.htm
I hope I am wrong. Good luck
Lou
Piston and cylinder kits are available for professional grade saws. Homeowner grades are usually replaced with a short block. Try here:
Homelite/Ryobi.com (authorized parts supplier)
https://www.gardnerinc.com/recons/disclaimer-lg.php - Agree; Choose “Product Line”; “Select OEM” & “Select Catalog” both to “Homelite Consumer Products”. A drop down list appears; self explanatory from here.
The numbers Homelite & Ryobi use do not match the numbers everyone posts. A careful inspection of your saw should find something that matches.
I hope you find my answer helpful.
Lou

Dec 17, 2009 | Homelite Garden

1 Answer

I have a BMW 318i 1993 and when i got it there was a big speaker and amp hooked up. I unhooked it but now i cant get any sound....the radio lites up but no sound. i know speakers work cuz they worked...


Hello pinkpimpin20,

Without knowing exactly what modifications were made to the factory sound system, it's difficult to point you to a particular fix. The number of channels on the "big amp" that you disconnected would help. Even the make and model.

But, from your description it's possible that the previous owner installed a multichannel amp to drive both the "extra bass speaker", usually referred to as a subwoofer, and the original vehicle speakers. In that case, the speaker wiring from the head unit (receiver) was cut and the receiver side of the wires was rerouted to the input of the aftermarket amp. The output of the amp was then connected to the other ends of the speaker wiring.

To restore to the original, you need to pull the stock receiver and resplice the wiring. If the previous owner cut the plug completely, it may be necessary to purchase a replacement from your BMW dealers service or parts department. It's possible, but not likely that the previous owner used both an aftermarket "harness" and an aftermarket "reverse harness" to avoid having to cut the wiring. In that case, all you'd have to do would be remove them and plug the radio harness back into the vehicle harness (or the back of the radio). But most DIY audio enthusists don't mind butchering the vehicle wiring. And you'll probably find that electrical tape was used to secure the wiring. After a year or so under the dash, it'll be a sticky mess to unravel.

The speaker wiring colors for the '93 318i are as follows:

Left Front Speaker Wire (+): Yellow/Red
Left Front Speaker Wire (-): Brown/Orange
Right Front Speaker Wire (+): Black/Red
Right Front Speaker Wire (-): Brown/Orange
Left Rear Speaker Wire (+): Yellow/Black
Left Rear Speaker Wire (-): Black/Orange
Right Rear Speaker Wire (+): Blue/Black
Right Rear Speaker Wire (-): Brown/Orange

Hope this helps.

Sep 24, 2009 | Jensen Car Audio & Video

1 Answer

96 Honda Shadow 1100c V-Twin


is this the one that kick in at a higher rpm to burn more gasses while running at speed? is it not running as it should, are you having an issue other than it doesnt do what you thought it should.No spark in rear cylinder or just on the one plug out of the two? If all is checking out as you said its got to spark.trade the coil thats on one with that other one see if the trouble is the same or moved with the coil to its new location.coil may work but not be good enough to run.

May 12, 2009 | 1996 Honda VT 1100 C Shadow Spirit

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