This document outlines troubleshooting steps for a 90 Series Turbo Diesel experiencing a lack of power upon initial start-up, which resolves after a few minutes of operation. The issue presents as an inability to rev or accelerate when cold, with power gradually returning as the engine warms.
Problem
A 2002 Turbo Diesel exhibits the following symptoms:
- Significantly reduced power upon initial start-up (cold or after extended stationary periods).
- Inability to rev in neutral when the problem is present.
- Crawling speed despite pressing the accelerator.
- Gradual return to normal power after approximately 3 minutes of operation.
Solution
The primary suggested cause is water contamination in the fuel tank. The recommended diagnostic steps are:
- Drain the hose under the fuel filter: Check for the presence of water. Diesel fuel should not drain from this point unless there is a sensor issue.
- Check fuel tanks by dropping the plugs: Inspect for water at the bottom of the tanks.
Relevant Parts
- Fuel Filter (location referenced for draining)
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