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03-28-2019, 12:00 AM
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Registered User
 
Join Date: Jun 2014
Location: Santa Rosa, CA
Posts: 124
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292 not firing on cylinders 5 & 6
Hey guys I need some help... my stock 292 is running like crap. You can hear it here
https://youtu.be/BLo_5nW8LGE We tested the exhaust manifold with a heat gun as it warmed up and it seemed that cylinder 5 and 6 are not firing. We then pulled the spark plugs wires for 5 and 6 as it was running and nothing changed confirming that they are not firing. Cylinders 5 and 6 have 120psi and 135psi of compression respectively which seems good and inline with the others, we have confirmed solid spark on each spark plug from the HEI and the mono jet carb has been rebuildt / readjusted to spec and the other 4 cylinders are firing right along.... so we’re lost HELP! Any suggestions?
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- 1972 K20 Longhorn, 4wd conversion. "TAWNKAA" Project. 292ci Inline 6 / '93 NV4500 / 32 spline 205 TC / Dana 60s front & back / rear Detroit Locker / 4.10 Gears / 35" BFG MT KM2 / 4" Tuff Country lift.  "TAWNKAA"Build Thread http://67-72chevytrucks.com/vboard/s....php?p=6823933- 1970 C10 Lonbed, 292ci Inline 6, 3 on the tree, stock. |
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