09450-06070 PUMP ASSY, INJECTI Denso Cross

Introduction
Do not perform any procedure in this Special Instruction until you read this information and you understand this information. This Special Instruction provides troubleshooting procedures for engines that have Mechanical Unit Injectors (MUI) that are having the following issues.
Misfire
Low Power
Hard StartingNote: The following Special Instruction covers misfires, low power, and hard starting symptoms. This document is not intended to serve as an all-inclusive Troubleshooting Guide, but rather as a supplement to the current Service Manual.Instructions
Use the Customer Interview on the next page as a guide to determine the Customer's Complaint. Determine the symptoms present and the conditions at which the symptoms occur. Encourage the customer to be specific.
Investigate and inquire about recent repairs to the engine. A previous repair could be related to the current problem.
Verify the Customer's Complaint. If possible, repeat the conditions that are causing the problem.
Based on the symptoms and previous engine repairs, find the cause for the complaint using the Misfire, Low Power, and Hard Starting flowcharts. Consider the probable causes in the order they are listed. Avoid pre-conceived ideas.
For Fuel System causes, find the corresponding Fuel System Tests in the back of this manual and follow the Tests step by step. When a test procedure is completed but the problem is not solved, move on to the next test on the flowchart.Note: For Fuel Injector Timing and Synchronization Procedures, refer to the engine's Service Manual.Customer Interview
Misfire Complaints (Rough Running, Missing, Skipping, Fuel Knock, Hunt, Surge, and Flutter)
Table 1
1. Is Misfire present? (check all that apply):    
_____     Under Load?    
_____     With No Load (Free Running)?    
_____     At Low Idle?    
_____     At High Idle?    
_____     Only when the engine is warm?    
Description of Problem:    
_______________________________________________________________________    
_______________________________________________________________________    
2. List any recent repairs or modifications that could affect the current problem:    
_______________________________________________________________________    
_______________________________________________________________________    
3. Has the Misfire problem:    
_____     Developed Gradually?    
_____     Developed Suddenly?    
_____     Been present since purchase?    Low Power (Slow Response, Poor Accelecration, Won't Pull Load, Track Stall, and Bucket Stall)
Table 2
1. Is Low Power experienced:    
_____     Under Load?    
_____     Only During Acceleration or Load Change (Poor Response)?    
Description of Problem:    
_______________________________________________________________________    
_______________________________________________________________________    
2. Is too much exhaust smoke seen in addition to Low Power?    
_____     Yes    
If Yes     ________Black Smoke? ________ White Smoke?    
_____     No    
_______________________________________________________________________    
_______________________________________________________________________    
3. List any recent repairs or modifications that could affect the current problem:    
_______________________________________________________________________    
_______________________________________________________________________    
4. Has the Low Power problem:    
_____     Developed Gradually?    
_____     Developed Suddenly?    
_____     Been Present since Purchase?    Hard to Start or will not Start
Table 3
1. Is the engine Hard to Start (Check all that apply):    
_____     After a hot shutdown (30 minutes or less)?    
_____     After an extended shutdown (30 minutes or more)?    
_____     All