Parts for your 1998 Mitsubishi Lancer-Manifold gasket

1998 Mitsubishi Lancer manifold gasket — what it is and when to sort it

Yes, the 1998 Mitsubishi Lancer uses manifold gaskets. Both the intake manifold and the exhaust manifold are sealed to the cylinder head with dedicated gaskets on the CE-series Lancer engines (4G15/4G93/4G93T). This is confirmed by the Mitsubishi Lancer CE workshop manual (1996–2003) in the Engine – Intake and Exhaust sections, the Mitsubishi ASA parts catalogue listings for these engines, and mainstream aftermarket catalogues from gasket manufacturers (e.g., Fel‑Pro, Mahle) and vehicle parts databases that list intake and exhaust manifold gaskets for the 1998 Lancer.

On the 1998 Lancer, the manifold gasket’s job is simple but critical: it keeps things sealed so the engine breathes and exhales properly. The intake manifold gasket maintains an airtight seal so the engine can meter air and fuel precisely. Any unmetered air sneaking in causes rough idle, hesitation, and higher fuel use. The exhaust manifold gasket keeps hot exhaust gases from leaking at the head, which protects nearby components, keeps the oxygen sensor readings honest, and helps the cat and muffler do their thing.

When servicing a CE Lancer, it’s smart to check around the manifold flanges for soot marks (exhaust), a rhythmic ticking on cold start (often an exhaust leak), or a hissing/whistling and high idle (intake leak). A bit of brake cleaner or smoke testing around the intake joins can quickly show a vacuum leak. If there’s any sign of trouble, replacement is the go-to—these gaskets aren’t “service items” on a schedule, but they do age, especially after heat cycles or if the manifold’s been off before.

Replacement basics a good workshop will follow:

• Use the correct gasket type for the specific engine code (4G15 vs 4G93/T).
• Clean mating faces gently and keep debris out of ports, check for warping.
• Fit new hardware if specified, then torque in the proper sequence and to spec from the workshop manual—rechecking after the first heat cycle if recommended.
• A tiny dab of sensor-safe RTV may be used only where the manual calls for it (usually at joint corners), not as a substitute for the gasket.

Done right, a fresh manifold gasket restores smooth running, better fuel economy, and keeps the engine bay quieter and cooler—handy for passing a WOF and for happy kilometres ahead.

Popular questions about 1998 Mitsubishi Lancer manifold gaskets

What are the signs of a leaking intake or exhaust manifold gasket?
A leaking exhaust manifold gasket often makes a ticking sound on cold start that softens as the metal expands, plus visible soot at the flange and a bit of exhaust smell in the bay. Intake leaks show up as a rough or high idle, lean codes, hesitation, or a whistle/hiss near the manifold.

Is it safe to keep driving with a manifold gasket leak?
Not recommended. Exhaust leaks can overheat nearby wiring and melt plastic, skew O2 readings, and increase fuel use. Intake leaks can make the engine run lean, which is hard on valves and can trigger fault lights. It’s best to get it sorted promptly.

How often should manifold gaskets be replaced, and what does the job involve?
There’s no fixed interval—replace when leaking or whenever the manifold is removed. The job involves removing the manifold, cleaning faces, checking flatness, installing a quality gasket, and torquing bolts in sequence to the workshop manual spec. A quick post-repair check for leaks after the first heat cycle is good practice.