1998 5.7 EFI Timing procedure

Strecker25

Petty Officer 2nd Class
Joined
Jun 1, 2015
Messages
100
Hi guys, new distributor in our motors so they need to be set to 8* BTDC in base mode per the manual. I jumped A and B to lock advance and put the throttle up to 1600 or so.

My question, there appears to only be one mark on the timing cover. Would that be 0 or 8* ? The video below shows it in base mode, I set it to line up with that mark and the motor runs perfectly but now I’m wondering if it’s set incorrectly. Here’s the video

https://youtu.be/hll1I6tbRHk
 

Bt Doctur

Supreme Mariner
Joined
Aug 29, 2004
Messages
19,093
IGNITION SYSTEM SERVICE MANUAL NUMBER 24
Page 4B-6 90-861327--1 OCTOBER 1999
EFI / MPI Models
1. Connect timing light to number 1 spark plug wire.
2. Start engine and run at 1300 rpm until it reaches normal operating temperature.
3. Stop engine and connect the scan tool or timing tool to the DLC connector on the EFI/
MPI wiring harness.
4. Start engine, allow rpm to stabilize.
NOTE: MEFI-1 models only, manually adjust remote control throttle lever to get 1200 engine
rpm.
NOTE: MEFI-2 and MEFI-3 models only, ECM will automatically adjust engine rpm to
approximately 1200 rpm when put in the service mode on a scan tool or when using the
timing tool.
5. Check ignition timing. If incorrect, rotate the distributor until timing is correct. Torque
clamping screw to 18 lb-ft (25 Nm).
6. Recheck ignition timing.
7. Disconnect scan tool or timing tool from DLC connector.
8. If required, return remote control throttle lever to idle position and shut off engine.
9. Restart engine, increase rpm to 1300 then return to idle position slowly. Ensure that
engine returns to idle rpm. Readjust throttle cable, if required.
10. Shut engine off.
Spark Plugs
 

Strecker25

Petty Officer 2nd Class
Joined
Jun 1, 2015
Messages
100
Thanks man, replied on CSr as well but there’s only 1 V mark on the timing cover. Is that 0* ? There don’t seem to be any other marks
 
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