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Thread: Backfiring throught intake?
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03-30-2009, 01:18 PM #1
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Backfiring throught intake?
Car will not start AGAIN
.
it sounds like it want's to start and when it does fire it pops and smokes out of the filter.
What could cause this?
the opti is brand new.1994 m6 z28-
LT's, CAI, no cats, ORY, Borla.
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03-30-2009, 02:09 PM #2
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The intake valve not sealing properly could cause that, did you adjust the valvelash recently (maybe too tight), but it sounds more like a timing issue to me.
Yep its slow.
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03-30-2009, 07:22 PM #3
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When you put the new opti in did you put the pin on the back in the right spot?
84 T/A - 400sbc, Roller cam, 531/529 at the flywheel
96 9C1 - Stock
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03-30-2009, 07:50 PM #4
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mine did it when the ICM took a poop as well as the opti. Check the stuff that is simple like the ICM, Coil and that you indexed the opti correctly during installation.
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03-31-2009, 06:03 AM #5
nom nom nom opti
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icm, coil, or opti
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03-31-2009, 06:52 AM #6
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Car ran good for about 300 miles after opti install. I'll check coil and icm tonight.
1994 m6 z28-
LT's, CAI, no cats, ORY, Borla.
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