LT1-LT4 Modifications 1993-97 Gen II Small Block V8

94 formula puttering

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Old May 25, 2008 | 12:17 PM
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Default 94 formula puttering

Ok i have a 94' firebird formula and it just started to putter under 2200 rpm's when i give it a fair amount of gas. Could this be the opti spark. IT will make this puttering noise but when it gets above 2200 rpm's it is fine. But when i give it gas of the line it will not even do a burnout cause of the puttering.
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Old May 25, 2008 | 07:45 PM
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Could be a number of things... How long since a tune up??? Plugs and wires make a big difference, and old plugs/wires will result in a poor idle, and accelleration.

Are you getting the SES light? If so, have you scanned the ECM to see what's up?

It could be the opti and/or coil too, but start troubleshooting before you start replacing parts.
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Old May 25, 2008 | 08:01 PM
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Well i first thought fuel and got a pressure gauge it was at 35 psi when key was on. then at idle it went up to 40 psi.
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Old May 26, 2008 | 12:21 AM
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Are you getting any codes? Did you check your plugs?
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Old May 26, 2008 | 09:34 PM
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no codes and im checking my plugs soon
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