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Old 02-27-2003, 04:12 PM
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sixto sixto is offline
smoke gets in your eyes
Join Date: Jun 2000
Location: SF Bay Area
Posts: 18,745
I had a 78 450SEL that ran reasonably well with no plug in #4 so no compression in one cylinder will not make it impossible to start.

Backfiring means you're getting fuel. It's a continuous system so there's no fuel timing to check. Recheck cam and ignition timing.

91 300SE
87 300SDL
83 300SD
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