Quick Quiz…
An 89 Oldsmobile with a 3.1 L engine (Chev MFI) is towed into your stall with the complaint:
Cranks, but won’t start.
Fuel Pressure is good, Key-Up scan data looks good, no DTCs are stored, and while cranking
the engine over, you see cranking
RPM on the scan tool.
engine over that it kinda sorta wants to start… Almost as if fuel pressure was too low.
You’ve read all the archives on
iATN for GM ignition systems and you decide to take a look
At the EST circuits while cranking
the engine…
|
|
|
|
|
Why do you think this thing
doesn’t want to start? |
