Step | Action | Value | Yes | No |
|---|---|---|---|---|
1 | Verify the vehicle specification. Is vehicle specification correct? | -- | Go to Step 2 | Go to Step 16 |
2 | Is oil level OK? | -- | Go to Step 3 | Go to Step 17 |
3 | Does oil pressure indicate near the specified value? | 170 kPa/idle (24.7 psi) 300 kPa/1,500 RPM (43.5 psi) | Go to Step 4 | Go to Step 18 |
4 | Is the engine oil used within the specified viscosity? | -- | Go to Step 5 | Go to Step 19 |
5 | Is the compression above the specified value? | 2157 kPa (313 psi) | Go to Step 6 | Go to Step 18 |
6 | Is the air filter restricted? | -- | Go to Step 20 | Go to Step 7 |
7 | Do you find any damage on the fuel pump, injection pipe, etc.? | -- | Go to Step 18 | Go to Step 8 |
8 | Inspect the prefilter, gauze filter, and fuel main filter. The gauze filter is fixed in the suction eye bolt on the supply pump. Is the fuel filter clogged? | -- | Go to Step 21 | Go to Step 9 |
9 | Is the air intake system clogged? | -- | Go to Step 22 | Go to Step 10 |
10 | Does the exhaust brake switch turn OFF? | -- | Go to Step 11 | Go to Step 23 |
11 | Does the accelerator pedal travel fully to wide open throttle (WOT)? | 100% | Go to Step 12 | Go to Step 24 |
12 | Is the valve timing correct? | -- | Go to Step 13 | Go to Step 25 |
13 | Review the engine scan tool data list. Is the engine scan tool data within the specified values? | -- | Go to Step 14 | Go to Step 26 |
14 | If the engine oil is diluted by fuel or other material, the engine may bind. Do you feel binding inside engine? | -- | Go to Step 18 | Go to Step 15 |
15 | Does the injection system operate properly? | -- | System OK | Go to Step 27 |
16 | Make matching to correct the vehicle specification. Is the action complete? | -- | Go to Step 28 | -- |
17 | Readjust the engine oil level. Is the action complete? | -- | Go to Step 28 | -- |
18 | Repair/replace the problem portion. Is the action complete? | -- | Go to Step 28 | -- |
19 | Replace the engine oil. Is the action complete? | -- | Go to Step 28 | -- |
20 | Clean or replace the air filter element. Is the action complete? | -- | Go to Step 28 | -- |
21 | Clean or replace the fuel filter. Is the action complete? | -- | Go to Step 28 | -- |
22 | Take out the foreign material. Is the action complete? | -- | Go to Step 28 | -- |
23 | Turn the exhaust brake switch OFF. Is the action complete? | -- | Go to Step 28 | -- |
24 | Readjust the acceleration sensor and/or repair the accelerator pedal assembly. Is the action complete? | -- | Go to Step 28 | -- |
25 | Readjust the valve timing. Is the action complete? | -- | Go to Step 28 | -- |
26 | Readjust/replace the problem portion. Is the action complete? | -- | Go to Step 28 | -- |
27 | Replace the injector or related sensor for the fuel injection system or the ECM according to the DTC. Is the action complete? | -- | Go to Step 28 | -- |
28 | Finish this program and return to the diagnostic procedure if necessary. Is the action complete? | -- | System OK | -- |
