MISFIRE # 5 CYLINDER

2006 Cadillac CTS

Tiny

billy c

November, 20, 2013 AT 2:44 PM

Changed spark plugs switched # 5 and # 6 ignition coils still misfire cylinder # 5. Ran injector kill test. NOTICED slight change in RPM. Bad injector? Checked other 5 cylinders with injector kill test noticed substancial RPM and engine change, I am using a snapon Solis Ultra to check vehicle and run tests.

FOUND 2889 RELATED QUESTIONS

Engine Miss

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2 Answers

Tiny

saturntech9

November, 20, 2013 AT 3:13 PM

Have you checked spark and compression on the number 5 cylinder yet?

Tiny

hmac300

November, 20, 2013 AT 3:16 PM

Check compression first then do a freeze frame and check values as it could be a maf sensor or any other thing, these are really hard to diagnose Also check fuel pressure and check resistance of injectior. If compression ok and injector ok pull valve cover to see if lifter/follower damage. Injector should be11-14 ohm

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