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Class 4 (4th Engineer) MEKM 📅 Jan 2023

Exam Question

Describe the effects upon the auxiliary engine of running with the following defects.

(a) Incorrect tappet (4)

(b) Carbon encrusted injector nozzle (4)

(c) Fouled turbo-charger (4)

(d) Worn out fuel pump cams (4)

Indicate how the defect may be detected and the rectifying action required in each case.

Reference Answer

### (a) Incorrect Tappet Clearance
**1. Effects on Engine Performance:**
The effects depend on whether the clearance is too large or too small.
* **Too Small / Zero Clearance:**

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