Timing

[flabum1017]

1995 chevy Suburban, 5,7L TBI

Anyone know how to set the timing on this without a diagnostic tool?

[coslanzetta]

theres a brown plug by the brake booster that u have to disconnect when u adjust the timming if not u will adjust and the computer will over ride your adjustment..almost looks like a square button on the end of a wire,remove it,set your timming and re-install...u should be good after that...factory setting is bout 8deg btdc...thATS INITIAL...GOOD LUK

[150aintenuff]

on a tbi its set at ZERO straight up.... if you set it at 8 btdc the computer pulls it back to zero... and then witholds advance throughout the entire range.

[flabum1017]

thanks guys..... will check it out this weekend

[flabum1017]

I could not find the plug anywhere.... All I found was a 4 socket plug on the passenger side of the enging not connected to anything (open to the elements)


I looked by the booster, I followed the wires from the distributor all the way acroos to where they go into the fire wall...... saw no brown, capped plug.

[RB in NM]

On my 92 model Chevy 1/2 ton truck 350 TBI, I had the pull a brown wire loose for the pin connector located behind the glove box. That info was printed in my manuel, which I let go with the truck. Apparently the computor will not read correctly with that wire connected....