Question about 1987 Dodge Omni

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Don't if the coil is shooting enough spark back to the plugs?

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Remove a plug wire,.the longest one of the 4! Place a flat bladed screw driver down into the plug wire,and into the bottom of the end of the wire.or boot.Hold the screwdriver blade about or at least a 1/4 inch from a good ground. Have some one crank the engine .There needs be a spark 1/4 inch or more long and rather wide spark not thin or narrow, and spreading out where it hits,check this with a good hot battery,not one that doesnt crank the engine good.Every thing turned off not to sap the battery! All other wires should be grounded out with a test lead ,so the engine dont start! Check all 4 the wires may be bad. They can be checked for resistance as well,you need an ohm meter,set on the thousands scale for ohms check and accotding to the wires length! none over 30,000 ohms 10,000 is plenty

Posted on Sep 06, 2010


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Why a weak spark 1987 dodge 5.9 v8

this can be caused by a weak battery check battery and charging system to verify a good working system. it could also be a weak coil not being able to supply enough output voltage for the ignition system. you don`t say if its weak coming out of the coil or at the plugs. if spark is weak at the plugs it could be a bad cap/rotor, ignition wires. it could also be an ignition module problem or pick-up coil in the distributor.

Aug 25, 2014 | Cars & Trucks

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I need a spark plug wiring diagram for a 4.6l Triton V8. 2001

Your shouldn't have any spark plug wires on your vehicle. There should be a coil on top of each spark plug. The firing order is 1 3 7 2 6 5 4 8 if that helps. I went back a year incase you had a late model 2000 but that 4.6 also has a coil on plug. If you do have spark plug wires, I don't think that's the original engine then.


Nov 21, 2011 | 2001 Ford Expedition

1 Answer

Hi there need to find out where the old spark plugs are and change with new ones, 1st time Im doing this am, 49yr old female with thanks

You can find a lot of pictures and videos on how to do basic maintenance on your BMW at places like UTube, Pelican Parts, and Doug's Domain.
You did not mention the year and model of your car, but the general instructions for MOST BMWs sold in the past 20 years are as follows:
Pry off the little plastic caps and unscrew the 10 mm bolts that hold the plastic covers on top of the engine.
Most BMWs have coils over the spark plugs. You have to release the locks on the plugs and unplug the coils from the wiring harness. Then remove the two 10 mm bolts that hold on each coil. Tug hard to pull the coil out of the hole.
If your car has thick wires running to each spark plug (e.g. older 318 model), you don't have coils over the plugs. Grip the rubber boot, not the wire, when pulling the wire free from the spark plug.
Then you need a deep well 5/8" socket that is magnetic or has a rubber gripper inside to hold the spark plugs so you can pull them up out of the hole when they are unscrewed. You will need an extension for the socket to reach down in the hole. A 6" extension is enough.
The spark plugs for a BMW should have nickel plated threads so they don't require antiseize compound, but even with nickel, some folks put a dab of antiseize compound on the threads to make sure the plug does not seize to the aluminum head.
The plugs are made of porcelain (glass) so be careful not to drop them. A plug that has been dropped on a hard surface should be discarded, even if it looks OK.
The most important part of this job is to carefully start the plugs back into their holes holding the socket extension in your hand, not the ratchet. They should thread in easily. DON'T force them! If you cross-thread a plug in its hole, this simple maintenance job can turn into several thousand dollars in repairs.
If you don't have a torque wrench (and I assume you don't), you want to tighten the plug by hand until the copper gasket touches the head. Then take the socket and give it another revolution or so against some resistance as the copper gasket crushes. When the copper gasket is crushed, The resistance to turning will suddenly increase. That is when you stop turning. Remember that the head is soft aluminum. It has to be tight enough to seal tightly and not vibrate loose, but not so tight that it strips the threads out of the hole. ($$$$)
After tightening the plug, you may find the the extension pulls out of the socket easier than the socket pulls free of the plug. You can tape the socket to the extension, or use some other tool to reach down in the hole and fish the socket out if the hole.

Aug 28, 2011 | BMW 3 Series Cars & Trucks

3 Answers

I have a 2005 sienna with 100,00 miles i got hit with multi misfire codes. I changed spark plugs but now i have error P0305 cylinder #5 misfire. i swapped out coils to see if the misfires moves but no...

With a misfire...its usually plugs, plug wires, and coil packs.
Sounds like you've done, make sure plug wire is seated real well at each end.
(its usually the connection points that get corroded or dirty...or a crack in the wire insulation allows the spark to shoot to the nearest ground.)

I have seen the plugs get fouled out by water entering the cylinder...rare, but happens.

Hope this helps...

Aug 28, 2011 | 2004 Toyota Sienna

1 Answer

Truck runs a little rough on rainy mornings. the other morning on my to work running about 60 mph it cut off and would not start back up.had it towed home and started trying to trouble shoot . replaced...

Your checking incorrectly for spark. Hokk a timing light to the cyliunder in question. If the timing light won't flash, your providing enough voltage to the plug for it to fire. You"ll get the gas from that. It sounds like a cracked coil.

Apr 21, 2011 | 1996 Nissan Pickup

2 Answers

Where are the spark plugs located on a 2004 Jeep Grand Cherokee Laredo 4x4 4.0L

they are located on the side of the engine under the ignition coil rail. see pic of coil rail below483dd98.jpg

Oct 24, 2010 | 2004 Jeep Grand Cherokee

2 Answers

When installing the distributor should the rotor point at the number #1 spark plug or more toward the front of the engine? also the spark from the coil and spark plugs look to be yellow or orange! shouldnt...

Don, this depends on the position that the distributer was in when it was removed. So, I presume that you do not know that...

here is what you do next: Pull plug #1, ground coil output, place finger over plug hole and turn the engine over until compression stroke can be detected (air rushing past your finger) then observe the timing marks on cranskshaft. this may take a few times until you are sure that you are on compression stroke and near top dead center of #1. Then install the dist pointing towards #1 plug position of the dist cap...

Spark color not very relevant, needs to be measured with scope. But probably it is okay..

Sep 06, 2010 | Toyota Pickup Cars & Trucks

1 Answer

Jerking bad when driving replaced coil lead plugs ok coil lead sparking outside coil

Is it sparking between boots or is it from the boot to the engine? You need to use dielectric grease on the boot on the coil to stop leakage of voltage between coil towers, I can't find the 2006 laser so chose a model similar to that model. With the engine off and you pull the spark plug wires put a little bit of the special grease on your finger and put it on the inside of the boot of the spark plug wire at the coil and at the spark plug. Be sure to not get any on the spark plug metal tip or on the metal on the coil pack. When removing the spark plug wire from the coil and plug be sure to twist it with the engine being cold so that you don’t ruin the spark plug wires. This should stop the leakage, if not then you have a defective coil/ coil pack and need to see if there is a carbon track or a crack in the coil assembly itself, let me know if this helps and get back to me if you need more assistance.

Jul 24, 2009 | 2006 Ford Laser

1 Answer

Spark plugs 2000 cad dts, where are they? how hard to do?

Spark Plugs are Located UNDER COIL Packs
1. Remove the ignition coil cassettes.
2. Remove the spark plug boots. NOTE: Refer to 3. Clean Spark Plug Recess Notice in Service Precautions.
  1. Remove the spark plugs from the cylinder heads.
  1. Measure and adjust the gap of the spark plugs. Refer to Spark Plug Usage. NOTE: Refer to Component Fastener Tightening Notice in Service Precautions.
  2. Install the spark plugs into the cylinder heads. Tighten Tighten the spark plugs to 20 N.m (15 lb ft).
  3. Install the spark plug boots onto the coil cassettes. Ensure that the boots are fully seated against the cassette.
  4. Install the ignition coil cassettes.

Feb 21, 2009 | 2000 Cadillac DeVille

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