Fuel System - Rough Idle, Surging, & Hot Start Problems

924

Group
25

February 19, 1981

Reference to Rep. Manual Page:
N/A

No.
81-02

Subject:
Fuel Injector Insert
Part Identifier 25 43

Key Points:
For rough idle, surging, hot start problems, check tightness

Rough idle, surging at part load, or hot start problems can be caused by loose fuel-injector inserts in cylinder head (vacuum leak)





Fuel-injector inserts, tightening

- remove injector
- remove insert, clean and apply Loctite "T" primer, with Loctite 620 (or equivalent)
- reinstall insert
- insert a 12 mm socket-head ("Allen") wrench in plastic insert and tighten to 22 Nm (16 ft lb)
- reinstall injector