WebMar 15, 2024 · The outer hubs on these engines have been known to shift moving your timing mark out of position. You can remove the #1 spark plug and turn the engine over slowly until you feel air being pushed out (compression stroke). Then get the piston on TDC using a bore scope or piece of wire. Then look to see where your timing mark is on the … WebMay 26, 2012 · That is the wire that allows you to BYPASS the computed Ignition Timing and forces the efi system to run in a fixed timing mode, which is designed to be set at 0 degrees. There is no crank sensor on the TBI system. It runs off of the signal from the pickup coil in …
Initial timing on a 1990 5.7L? Hot Rod Forum
WebApr 1, 2002 · This means the timing is no longer computer controlled and can be adjusted at its base setting by rotating the distributor. You should line up the timing marks with a timing light to 0*... WebDec 4, 2008 · Try this, set static timing to about 6 BTDC with wire disconnected then hook it back up and then pull ECM fuse for several minutes to clear its memory and place it back in learn mode. (this reboots ECM) see if it helps at all. EDIT** Last edited: Oct 4, 2008 FJ-4.3 1973 FJ40 was frame off, got a 4.3 CFi/4L60E/NP-205 and FJ-62 power steering. dative of das
Troubleshooting your TBI Fuel Injection System - 73 …
WebApr 19, 2007 · HOUCKXLR8. If it is a stock motor you should have to use the line on the balancer. The computer controled TBI motors are timed at 0*, and the computer takes … WebJun 1, 2024 · Slowly rotate the distributor clockwise or counterclockwise to adjust the timing to specified degrees. 9. Aim timing light at timing tab and recheck location of … WebMay 18, 2005 · I have a 1990 Suburban 5.7L TBI and it runs great on 87 octane gas. The. setting listed on the emissions sticker is zero degrees BTDC. If you. advance it above this, you will gain power and fuel mileage but you may. need a higher octane gas. We used to run the older small blocks (pre. bj\u0027s wholesale medford ma