Big backfire, 2.7L CIS from 1976 911 |
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Big backfire, 2.7L CIS from 1976 911 |
Kansas 914 |
Jul 4 2020, 10:08 AM
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#1
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Advanced Member Group: Members Posts: 2,999 Joined: 1-March 03 From: Durango, Colorado Member No.: 373 Region Association: Rocky Mountains |
I tried to start the car as I normally do but back fired (pretty loud) I tried to re-start (it did this once before a few years ago) but this time it didn't restart.
I pulled the air cleaner cover and saw a hole in the filter and the pop-off valve was in pieces. I haven't taken the air box off yet but that is next if I can't get the old pop-off valve out. It looks like the engine builder sealed the air box (and the pop-off valve) with some kind of "goop". Fun times... |
sixnotfour |
Jul 7 2020, 01:07 PM
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#2
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914 Wizard Group: Members Posts: 10,525 Joined: 12-September 04 From: Life Elevated..planet UT. Member No.: 2,744 Region Association: Rocky Mountains |
Did you notice,It was actually 180 out of proper flapping flow ?
Any thing is good but if it backfires, you need to check the seal, Ive seen em pop out ,instead of breaking a few times,,, |
Kansas 914 |
Jul 7 2020, 01:11 PM
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#3
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Advanced Member Group: Members Posts: 2,999 Joined: 1-March 03 From: Durango, Colorado Member No.: 373 Region Association: Rocky Mountains |
Did you notice,It was actually 180 out of proper flapping flow ? Any thing is good but if it backfires, you need to check the seal, Ive seen em pop out ,instead of breaking a few times,,, Thanks! I have seen them installed both ways and didn't know which way was right. |
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