Distributor looses spark on come cyl's
05-01-2005, 10:42 PM
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Car: Formula
Engine: 6.0 LSX
Transmission: 4L60E
Axle/Gears: 9 Bolt 3:27
Distributor looses spark on come cyl's
GF's 89 RS 350 TPI conversion has been running bad. We narrowed it down to a small miss. New EVERYTHING. I swapped in my Dis and it ran good. I then looked at her dis and although the PU coil is new, ign module new and cap and rotor is new, I knoticed on the inside of the cap i can see the nice thick spark marks on the terminals like normal but as i looked around the mark got thinner and thinner on 3 cyls and so it looks like thick, thick, thick, thinner, thinner, nothing, Thinner , thick. sorta like the dis is out of round or something. Any ideas? PU Coil tests in at .786 well within the .5 - 1.5 specs
05-02-2005, 07:31 AM
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Car: 91 GTA, 91 Formula, 89 TTA
Engine: all 225+ RWHP
Transmission: all OD
Axle/Gears: Always the good ones
Its bent, and/or someone tried to straighten it.
Had a friend bend it pulling one out and said it was "straight" when I aske dhim repeatedly.
We had a miss on #2 only. Was firing roughly half the time but header tube stayed warm, not hot to the touch.
Traced it down to exactly what u are describing and just ate it and swapped in a new distrib.
Problem solved.
The warped/bent allowed clearance to increase from rotor to cap and miss at the highest level #2 and made the misfire.
later
Jeremy
Had a friend bend it pulling one out and said it was "straight" when I aske dhim repeatedly.
We had a miss on #2 only. Was firing roughly half the time but header tube stayed warm, not hot to the touch.
Traced it down to exactly what u are describing and just ate it and swapped in a new distrib.
Problem solved.
The warped/bent allowed clearance to increase from rotor to cap and miss at the highest level #2 and made the misfire.
later
Jeremy
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