TM  10-3930-638-24&P 3-4. FUEL SYSTEM TROUBLESHOOTING (cont) MALFUNCTION TEST  OR  INSPECTION CORRECTIVE  ACTION 12. FUEL REACHING FUEL INJECTORS BUT ENGINE WILL NOT START (cont) Step  7.  Remove  cam,  shoes,  and  rollers  and  inspect  for  wear  (para  4-3b;  notify  general  support  maintenance). a. If cam, shoes, or rollers are worn, replace (para 4-3b). b. If cam, shoes, and rollers are okay, proceed to step 8. Step 8. Check rotor and hydraulic head assembly (in plunger area) for wear (para 4-3b; notify general support  maintenance). a. If rotor and hydraulic head are worn in plunger area, replace (para 4-3b). b. If rotor and hydraulic head are okay, proceed to step 9. Step 9. Check that hydraulic head screws are tight or are not missing (para 4-3b; notify general support maintenance). a. If hydraulic head screws are not tight or are missing, tighten and/or install (para 4-3b). b. If hydraulic head screws are tight and not missing, proceed to step 10. Step 10. Check rotor for scores (para 4-3b notify general support maintenance). Replace rotor (para 4-3b). 3-23