ngk or autolite platinum series
ACDelco R45S conventional spark plugs for an original ignition system.
Mallory ignition or MSD ignition are the best bang for your buck. Personally i have used mallory unilite and have excellent results.
NGK laser iridium spark plugs.
You have to use platinum-tipped spark plugs ONLY.
the best spark plugs for all ford vehicles are the motorcraft type, which they come from ford.
The best spark plugs are the original equipment plugs that were installed by the manufacturer at the factory. Sometimes you may need to go to a dealer to get the exact plugs.
1) Disconnect the wire harness from the ignition coils2) use a 10mm socket to take off the bolts on the ignition coils3) pull the plug boots out in pairs ( so you don't have to disconnect the wires)4) remove spark plugs with standard spark plug tool(comes with most socket-sets)5) gap new plugs to .04 with spark plug gapper6) install new spark plugs (make sure they're tight, but you don't need to kill it)7) put the plugs boots back (the wires 'click' on the plug, the coil boots don't 'click')8) put the ignition coil bolts back in9) reconnect the wire harnesses to the ignition coils10) enjoy your sweet car!!**NGK plugs are your best bet**if you have any check engine lights, disconnect the battery for 5 minutes to reset the codes
Most likely because its spark plugs are shut. Second best, ignition wires need to be replaced. Third best, injectors are full of carbon.
To change the spark plugs on a Vauxhall Zafira open the hood of the vehicle. The spark plugs will be located on the engine. It is best to used a spark plug removed to unscrew the plugs. They will be connected to a cable. Remove the cable. Replace the plugs with new ones and reattach the cable.
AC plugs
A spark plug diagram for a 1990 Ford Ranger typically shows the location of the spark plugs along the engine's cylinder head. The Ranger's engine options include a 2.3L four-cylinder and a 4.0L V6, with the spark plugs positioned accordingly—four for the four-cylinder and six for the V6. Each spark plug is connected to an ignition coil or wire, which is essential for engine ignition. For detailed visuals, it's best to refer to a repair manual specific to the vehicle.
For a 1985 Yamaha Virago XV1000, the best spark plugs are typically NGK DPR8EA-9 or equivalent. These plugs offer good performance, reliability, and durability, making them suitable for the bike's V-twin engine. It's also essential to ensure that the spark plugs are gapped correctly according to the manufacturer's specifications for optimal ignition and engine performance. Regular maintenance and replacing them as needed will help keep the bike running smoothly.