TM 5-3895-370-14&P
Table 4-4. Unit Troubleshooting Procedures - CONT.
Malfunction
Test or inspection
Corrective action
ENGINE (CONT)
6. ENGINE IDLES ROUGH (CONT).
Step 2. Check fuel lines for damage and loose fittings.
If fuel lines and fittings are damaged or loose, tighten or replace fittings and/or fuel lines (para 4-41).
If fuel lines and fittings are not damaged, go to step 3.
Step 3. Check fuel lines for air and bleed fuel system (para 4-42).
If engine keeps running, fault corrected.
If engine does not keep running, go to step 4.
Step 4. Check intake and exhaust valve clearance (para 4-25).
If intake or exhaust clearances are not correct, adjust valves.
If intake or exhaust clearances are correct, go to step 5.
Step 5. Check fuel for contaminants.
If fuel is contaminated, drain and flush fuel tank (para 4-41).
If fuel is not contaminated, go to step 6.
Step 6. Check idle speed of engine.
If tachometer does not read 1200 rpm, adjust throttle cable (para 4-48).
If tachometer reads 1200 rpm, fault not corrected. Notify supervisor.
7. ENGINE RUNS ROUGH OR MISFIRES.
Step 1. Check fuel lines for damage and loose fittings.
If fuel lines and fittings are loose or damaged, tighten or replace fittings and/or fuel lines (para 4-41).
If fuel lines and fittings are not damaged, go to step 2.
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