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02-08-2009 06:42 PM #1
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- Car Year, Make, Model: 1986 S-10 SBC
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Chevy van may have "jumped" time??
Hello all,
A question on the positioning of the timing chain and gears. When the marks are aligned (crank at 12 o'clock and the cam at 6 o'clock) should the rotor of the distributor be ready to fire the #1 bank? The rotor is facing 180 degrees opposite of #1 when the marks are lined up now. The van has a lot of miles on her (200k+) and I think it has "jumped" somehow. Will not run. Backfires through the intake.
2002 Chevrolet Express 3500
5.7 Vortec
4l80E
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02-08-2009 06:50 PM #2
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When marks are together as you described, you're set to fire on #6.What if the "Hokey Pokey" is what it's really all about? 
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02-08-2009 07:16 PM #3
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pull number 1 plug..stick you finger in plug hole...bump engine till you get compression. Look at marks on balancer and bring slowly to #1 TDC. Then look at rotor alignment
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