Misfires under load (acceleration) can be caused by the valve cover gaskets leaking oil into the spark plug wells shorting the spark plugs to the cylinder head. New spark plug wires will be needed and the valve cover needs to be resealed.
Resources for the Repair and Maintenance of your 1998 Mazda Millenia
1998 Mazda Millenia
1998 Mazda Millenia Problems
The passages for the Exhaust Gas Recirculation (EGR) system can become restricted or clogged causing the Check Engine Light to illuminate. The EGR valve will need to be inspected and the passages cleaned.
The oil seals on the supercharger can fail and cause excessive oil consumption and bluish gray smoke from the tail pipe. Supercharger replacement is commonly required to correct this concern, this can also be an expensive repair.
There are T-shaped vacuum connectors under the intake manifold that can break and cause a rough idle.
Timing belt replacements can be very expensive on the supercharged models. It is important to be sure the timing belt is replaced at the scheduled interval.
1998 Mazda Millenia Questions and Answers
How do you remove rear shocks on a this vehicle?
I've seen links that say it's by the upper AND lower hose and am just wondering which is correct.
I just had the AC repaired and now this has become a problem. Prior to having the AC repaired the blower fan worked fine; once the temperature was met inside the vehicle the blower would automatica...
1998 Mazda Millenia Reviews
I love this car; the only thing has been the price/availability of parts. Service is expensive-engine is tough to work on. This car has 215K and other than a bad distributor ($200), it has run fine, starts up every time and runs nicely. I have the check engine light issue just like so many others but if you take care of the little things when they are small, the car will love you back. Change the oil and follow the service intervals in the manual and you will be fine. This car surprised me how comfortable it is to drive nice leather and wood accents. I am the second owner and we both have taken good care of it. not one spot of rust and only i rip (repaired for $3) in the interior. She drinks about 27 mpg on the highway; I'm getting like 19-21 in stop-n-go.