quick question
- Thread starter Asia
- Start date
Usually, a modern car like yours would not need plugs until they have sparked 100K miles or so. Check your Owner's manual to be sure.
Then replace them with the OM's replacement suggestions. Typically, they will be platinum plugs.
On our old Marks, we can go 35-45K miles on a set of "standard" plugs. Platinum fours (which I use in my Marks) last 4 times as long.
As a rule of thumb, If you have spark plug wires, figure replacing standard plugs every 35K miles or so. Also save your money for replacing the plug wires every 80 to 125K miles or so.
If you have Coil On Plug -- these are 100K mile plugs. The coils typically last for the life of the car, unless you were born under an unlucky star..
I've never heard of commercial injector cleaners harming a fuel system. If you roll your own cleaners, be careful.
I've had very good luck with the higher priced synthetic cleaners from STP and other brand names.
Then replace them with the OM's replacement suggestions. Typically, they will be platinum plugs.
On our old Marks, we can go 35-45K miles on a set of "standard" plugs. Platinum fours (which I use in my Marks) last 4 times as long.
As a rule of thumb, If you have spark plug wires, figure replacing standard plugs every 35K miles or so. Also save your money for replacing the plug wires every 80 to 125K miles or so.
If you have Coil On Plug -- these are 100K mile plugs. The coils typically last for the life of the car, unless you were born under an unlucky star..
I've never heard of commercial injector cleaners harming a fuel system. If you roll your own cleaners, be careful.
I've had very good luck with the higher priced synthetic cleaners from STP and other brand names.
Frankie X
Registered
What HOTLNC said.
If your plugs foul badly enough to need to be replaced at less than 100,000 miles, you've got a bigger problem. All techs are taught that fouled spark plugs are never a cause, they're a symptom.
Cleaning the injectors should never create trouble, but keep in mind that Ford has no recommended injector service published anywhere; any Ford product newer than ~1997 comes with DRI (deposit resistant injection), which Ford claims should never NEED cleaning.
I know that's not true; they're"deposit resistant", not "deposit proof". Still, if your injectors foul up badly enough to create driveability problems at anything less than ~75,000 miles, you've got SERIOUS fuel quality issues!!
If your plugs foul badly enough to need to be replaced at less than 100,000 miles, you've got a bigger problem. All techs are taught that fouled spark plugs are never a cause, they're a symptom.
Cleaning the injectors should never create trouble, but keep in mind that Ford has no recommended injector service published anywhere; any Ford product newer than ~1997 comes with DRI (deposit resistant injection), which Ford claims should never NEED cleaning.
I know that's not true; they're"deposit resistant", not "deposit proof". Still, if your injectors foul up badly enough to create driveability problems at anything less than ~75,000 miles, you've got SERIOUS fuel quality issues!!
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