back fires and missing

101,000 MILES • V8 • 2WD • AUTOMATIC
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JAMESC10
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i have a 1977 chevy c10 with a sb 350 it sound like it is missing and i know it is back fires and ideas
Dec 29, 2010 at 2:55 PM
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RASMATAZ
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Check the fuel pressure , Carb's accelerator pump/power valve and also the ignition timing-valves could be hanging up-Check engine compression
Dec 29, 2010 at 3:10 PM
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JAMESC10
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what is the tool called that i use to check the air compresson in piston chamber that screws in tho the spark plug
Dec 29, 2010 at 3:17 PM
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JAMESC10
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how do i check the ignition timing
could i have a back jet in my carb? if i switch to a carb i know works fine do you think that could fix the problem
thank for you help so far
Dec 29, 2010 at 3:21 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
You'll be needing a compression gauge and inductive timing lite-to check engine compression and ignition timing
Dec 29, 2010 at 4:59 PM
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JAMESC10
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well i have a bad piston ring on my 7th piston or my valve bc it is only at 55 and the others are at 120 or 115 so i am looseing compression on the 7th piston it is on time it has to do with the compression
Dec 30, 2010 at 2:46 PM
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