1990 Nissan Pickup (D21) Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1990 Nissan Pickup (D21)
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1990 Nissan Pickup (D21) ProblemsExhaust Manifold Can Warp and Cause the Studs to Break Off
The exhaust manifold on the 3.0 liter engine often warps and cracks, breaking off the studs between the cylinder head and the exhaust manifold. The noise may be most noticeable when the engine is cold.