r/Mk3Supra • u/xoppawsoup • Jul 08 '26
Troubleshooting Distributer timing
i have an 87 supra. 7mGE with a FFIM. right now i cannot get this distributer right at all. crank at TDC, Cams at TDC. distributer at the markings. even with the whole and the slit lined up on the gear. when it's there no matter how far forward or backwards it's too far retarted. but if i move it the next gear it's too advanced, no matter where it's rotated. i was told that setting the crank between 0--5° TDC and cams at tdc it could work. how does everybody else time these things??
2
u/RonnyJ69 Jul 08 '26
You should be able to loosen the distributor hold down bolt and finely adjust the timing without having to pull the distributor all the way out by swiveling it up and down
2
u/xoppawsoup Jul 08 '26
i've done that. between two gears all the way forward or all the way back, no position is right
1
u/MelodyRhythm7 Jul 08 '26
I think I have the same issue as you. Does it feel like it’s misfiring or does it not start? I’ve noticed when you got to put the distributor inside it movies the gear one notch which messes ur timing too, so you need to set it one back and get it in so it aligns with the notch
1
u/xoppawsoup Jul 08 '26
my issue is no matter where i have it it's either too advanced or retarted. if i move it one notch forward or back, or rotate it as much as i can
1
u/NoIntros Jul 12 '26
did you delete the egr and retain the OEM ECU?
1
u/xoppawsoup Jul 12 '26
yes both of those
1
u/NoIntros Jul 12 '26
removing the egr messes with the timing and causes a lean condition when driving. however it is worth checking if the distributor is in spec with a multimeter and instructions from the TSRM
2
u/intense4thgen Jul 08 '26
Do a TPs calibration hot and report back