PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

Misfire

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Jul 21, 2017 | 12:52 PM

#1

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Misfire

2008 chevy impala ss 5.3L v8, misses after warming up, no code, lifters have just been replaced and valves reseated. New coils and plugs and wires all around. Large random spark between coil mounting plate on right bank and valve cover bolt. Same left bank but much smaller and less frequent. Any ideas?

Milo

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Jul 21, 2017 | 02:53 PM

#2

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From: Central Cal.

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Check all your grounds.

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Jul 21, 2017 | 10:09 PM

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Quote:

Originally Posted by G Atsma

Check all your grounds.

Holy crap X2 on this.

The voltage is trying to get back to ground and it will...somehow.

Voltage is very lazy....but it is also very strong.

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Jul 21, 2017 | 10:17 PM

#4

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From: Central Cal.

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Quote:

Originally Posted by LilJayV10

Holy crap X2 on this.

The voltage is trying to get back to ground and it will...somehow.

Voltage is very lazy....but it is also very strong.

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