Has the timing been checked/set to 10 BTDC at below 1000 RPM? There is a tech bulletin on this...
Reference Number(s): SB93-02-002
Related Ref Number(s): SB93-02-002
RODEO (UC) AND PICKUP (TF) 3.1L V6 IDLE SPEED/IGNITION
TIMING SPECIFICATIONS (WORKSHOP MANUAL CORRECTION)
Model(s): 1991-92 Isuzu Rodeo, 1991-92 Isuzu Pickup
Bulletin No.: SB93-02-002
Date: December, 1993
1991-92 Rodeo (UC) and Pickup (TF) models equipped with 3.1L V6 engine.
Idle speed and ignition timing specifications for affected vehicles are incorrectly described in the
following Workshop Manuals:
This Service Bulletin contains the correct idle speed & ignition timing specifications for the
referenced workshop Manual pages as well as revised Vehicle Emission Control Information label
The correct vehicle specifications for the 3.1L V-6 engine are:
No adjustment to " idle speed is required.
" Ignition timing is 10 BTDC under 1000 rpm.
IDLE SPEED/TIMING - WORKSHOP MANUAL CORRECTION -1992 Isuzu Rodeo S Page 1 of 2
Checked for vacuum leaks? You may have a vacuum leak, get a can of spray Throttle body cleaner, spray the vac lines and maniflod area, when the idle changes, youve found the leak! You want the engine running and spray on the outside but do direct the stream onto the hoses, if it is a vacuum leak, the engine idle will change speed, then you have detected a leak, repair the vacuum leak and see how it runs! Keep spray off the exhaust manifolds and pipes! Fire hazard!
Tuesday, May 4th, 2010 AT 1:48 PM