Parts for your 1997 Mitsubishi Pajero-Manifold gasket

1997 Mitsubishi Pajero manifold gasket — fitted, important and worth keeping an eye on

Based on technical sources, a manifold gasket is absolutely used on the 1997 Mitsubishi Pajero. The Mitsubishi Motors Workshop Manual for the V20 series (1991–1999) specifies intake and exhaust manifold gaskets across common engines of the era (4M40 2.8TD, 6G72 3.0 V6, 6G74 3.5 V6). The Mitsubishi ASA electronic parts catalogue also lists manifold-to-head gaskets for these engines, and major gasket catalogues from Permaseal, Mahle and Victor Reinz carry direct-fit intake and exhaust manifold gaskets for 1997 Pajero variants. So it’s a relevant, fitted component on this model.

The manifold gasket’s job is to create a heat- and pressure-resistant seal between the cylinder head and the intake or exhaust manifold. On the intake side it prevents unmetered air leaks that cause rough idle and poor fuel economy, on the exhaust side it keeps hot gases contained, protecting nearby components and maintaining proper oxygen sensor readings. On 4M40 turbo-diesel models, a sound exhaust manifold seal also helps the turbo spool efficiently.

Common signs it’s on the way out include:

• Ticking or chuffing noise at cold start that lessens warm
• Hissing or whistling under load, soot marks around the manifold
• Rough idle, down on power, higher fuel use, exhaust smell in the cabin

Replacement isn’t a fixed-interval service item, it’s done when symptoms appear or whenever the manifold is off for other work (e.g., plugs and leads on V6s, turbo or EGR servicing on diesels). The workshop approach is straightforward but benefits from patience: soak fasteners, remove heat shields, follow the factory loosening and tightening sequence, clean mating faces thoroughly and check the manifold with a straight-edge for warp. On many Pajeros—especially high‑kilometre 4M40s—replacing studs and nuts is smart insurance.

Fit a quality OEM or reputable brand gasket. Most intake and exhaust manifold gaskets are installed dry, sealants are not generally required unless the service manual specifies a tiny dab at certain junctions (some intake coolant crossovers on V6s). Torque the manifold in stages using the factory pattern. After a few heat cycles, it’s sensible to re-check fastener integrity on exhaust manifolds, as heat cycling can relax joints.

For owners who like turning spanners, allow half a day. Otherwise, a good independent workshop can sort it quickly and keep the Pajero running sweet as.

What are the tell‑tale signs of a blown exhaust manifold gasket on a 1997 Pajero?

Expect a sharp ticking on cold start that softens as it warms, a whiff of exhaust under the bonnet, and sometimes black soot at the manifold flange. Power can feel a bit flat, and on 2.8TD models boost may build slower than usual.

Should sealant be used on the Pajero’s manifold gaskets?

Generally no. Intake and exhaust manifold gaskets are designed to be installed dry. Only use a small amount of sealant where the service manual explicitly calls for it, such as specific joints on some intake assemblies. Overuse can cause leaks or sensor issues.

Is it OK to keep driving with a leaking manifold gasket?

Not ideal. Hot exhaust leaks can cook nearby components, let fumes into the cabin, and upset oxygen sensor readings. On turbo‑diesels it can reduce turbo response. It’s best to schedule a fix sooner rather than later.