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No switch, only boot over spark plug, sorry this is no help as engine runs fine. Not grounding out spark? If so, how?

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After I drive in water my engine come hot an dies


You probably need new spark plug wires with new boots.

Sounds like water is splashing up thru the wheel wells and spraying on the engine (which makes the engine steam) and the moisture sometimes makes the spark ground out especially if the engine is dirty and the spark can leave the wire more easily and ground out on the engine block etc.

Spark wires eventually get overheated and their resistance goes up so your spark plugs end up getting less spark strength.

Feb 25, 2015 | Cars & Trucks

1 Answer

2000 ford explorer xlt 4.0 cranks will not start took to garage changed battery cables and cleaned charging system 2 days later cranks will not start but can hear fuel pump running when I turn key the...


You should hear the fuel pump run momentarily when the key is in the Run position. Ensure the engine has a good spark by removing one of spark plug boots. Stick a phillips screwdriver in the boot, and hold the handle of the screwdriver, and allow the shaft near ground. (motor works best) Have someone crank the engine and look for a good blue spark arch from the screwdriver and engine. If your getting good spark, then check the fuel pressure on the fuel injection rail.

Nov 17, 2014 | 2000 Ford Explorer

1 Answer

2004 cavalier wont start


If your plug boots come off with ignition coil housing, remove it, then use spark tester in plug boot. Crank the engine and watch for spark. You would probably want to pull fuel injector fuse, no need to spray gas.

Then use a gage and check proper fuel pressure. Some vehicles don't have a Schrader valve, so you need proper fittings to tee into supply line, in order to use pressure gage. Don't take any fuel lines loose unless your sure, no pressure on the system.
I can only help with testing.

Apr 20, 2017 | Cars & Trucks

1 Answer

1996 grand marquis will not start


will it crank at all? if its cranking there are three main things that make an engine run... fuel, air, spark. check spark by pulling a plug and keeping it plugged into the wire and holding the threaded part of the plug to a good ground(any bare metal on your engine will work) hold the spark plug wire boot with a pair of insulated pliers or a pair of gloves while doing this! have someone crank the engine while you do this. if you have spark you should see it jumping from the plug through the gap. if you are getting spark then check fuel delivery by cranking engine for a few long seconds then pulling a plug to see if it is wet with gas. i hope this helps

Jan 10, 2013 | Cars & Trucks

1 Answer

F250 03 misfire diagnosis


The engine Family you have is know for having coils go bad. If you can get the truck scanned to see which cylinders are misfiring. If not, First I would remove all coils and spark plugs and Inspect. If you have found bad Spark plugs Replace with a high Quality plug. Double Platinum at a Minimum. I would not use Champion plugs. I have never had good luck with them in Fords. Look closely at the coil to spark plug boot. if you see any signs of arcing , White looking or burn marks that is a sign that you have boots letting Ignition spark arc to ground before reaching the spark plug. You can get replacement boots Aprox 4.00 each or there is a complete set. Look closely at the coil pack for any signs of cracking, arching, white residue, burning. that would be a sign of a bad coil pack.

Jan 19, 2012 | Ford F-250 Cars & Trucks

1 Answer

1997 Oldsmobile Achieva - check engine light is on and car is running sluggishly...brand new motor installed 6 weeks ago.


What speed are you going when it chugs?
It could be as simple as a bad spark plug or a spark plug wire/boot grounding out.
When spark plug boots get old, the rubber cracks and lets voltage arc out the side and to the engine instead of through the plug.
This will be most noticeable when trying to maintain a speed of over 40 mph, or under mild acceleration.
The reason for being noticeable at this speed/acceleration level is that the transmission torque converter will be locked, transferring the vibration from any engine miss straight through to the wheels.

Jan 07, 2012 | 1997 Oldsmobile Achieva

1 Answer

Truck was running and just died. eletric system ok. fuel pump ok. and fuel level sensor is fine . can't figure out why it wont run . help please


Have you pulled and checked the spark plugs to see if its getting fire to the engine? If notI recommend trying this first. Just remove the easiest spark plug to get to reattach the plug wire and ground it to the engine and see if its getting a spark...let me know how this turns out and we can work from there.

Sep 16, 2011 | 2001 Dodge Dakota

1 Answer

Crown vic has been running rough like water in gas. new fuel filter nothing , battery is fine would not even turnover today nothing


Not turning over with a good battery could be a bad ground connection, more likely though could the starter. As for running rough "like water in the gas" most likely is one or more of the "coil packs" over the plugs have gone bad. I recommend to first get the engine codes scanned even if the engine light is not on, the computer will store the codes. look for misfire detected in cylinder #__ . That way you can try using dielectric grease on that spark plug boot to see if it cures the misfire. If this does not cure the misfire you may want to replace the coil pack. However do not replace them blindly as they are in the $50 per unit range. I have had to replace one coil pack on mine and when a second misfire occurred I fixed it by cleaning the spark plug boot and using dielectric grease. I hope this helps.

Aug 12, 2011 | 2000 Ford Crown Victoria

1 Answer

Rough Running


hi riley
im dave

kind of funny that they said you should replace the plug wires when checking them to see if they need to be replaced is a major part of a tune up. How much did they charge for a tune-up? What was included?
In any event this is how you check your plug wires. Make sure you do this one at a time to prevent mixing them up, which is essential for proper engine operation. Disconnect the spark plug wire from the spark plug. You can use a special spark plug removal tool available for a low cost at most auto parts counters or you can grasp the rubber boot and twist it gently while pulling the wire free. Be sure the pull on the boot and not on the wire or you'll likely pull the wire out of the boot neccessatating new wires. Check inside the boot for corrosion, which is a white crusty powder (don't mistake the white dielectric grease used on spark plug wire boots for corrosion). Using an insulated screwdriver, insert it into the boot so it contacts the metal connector inside and have and assisstant turn the engine over while you hold the metal part of the screwdriver about an inch or less (but not touching) from a good ground like an unpainted screw or a piece of metal. Look for a strong, even spark to be generated between the blade and ground and steady intervals. Turn the engine off and push the plug wire and boot back onto the spark plug. It should fit tightly onto the spark plug. If it doesn't, remove the spark plug wire and a pair of pliers to crimp the metal connector inside the wire boot until the fit is snug. Clean built-up dirt and grease along the entire length of the wire with a clean cloth while inspecting the wire for burnt areas, cracks, and other obvious damage. Bend the wire in several places to make sure that the inside conductor hasn't hardened. Repeat the process for each wire. If new spark plug wires are neccessary, buy a complete set, pre-cut for your particular engine. Terminals and rubber boots should already be installed on the wires. Replace the wires one at a time to avoid mixing up the firing order. Coat the metal conductor with dielectric grease that will come with the pack of wires. Make sure the terminals are securely seated in the coil pack and on the spark plugs. Be sure that the length of the wire you replace is equal to the new wire. If all seems well the wires wait until dark and start the vehicle. Open the hood and look along the length of the plugs and around the coil packs that the plugs connect to for arcing(sparks).
If you need to run a diagnostic post me back

Jul 20, 2008 | 1993 Dodge Shadow

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