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08-18-2015, 07:06 PM
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#1 |
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Senior Member
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EFI TROUBLE! ED W. All Cooters, Help!!
Took my car, '92 Camaro J/SA, out to our local track on Aug.2, ran 11.54 and 11.52 @ 114.00. Air 2400 ft. Density 28.97 Humidity 55%.
Go to the same track on Aug.16, 2400 ft. Density 29.03 Humidity 77%, and car goes 11.84, and 11.82 @ 106.00. Changed nothing but the oil. Leaked it yesterday, perfect! RPM @ the finish line the same and A/F Ratio @ the finish line the same. I am lost. All help welcome. J.R. |
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08-18-2015, 08:40 PM
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#2 |
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Location: Murfreesboro TN
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Re: EFI TROUBLE! ED W. All Cooters, Help!!
Why are you assuming it is an EFI problem?
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Alan Roehrich 212A G/S |
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08-18-2015, 08:52 PM
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#3 |
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Re: EFI TROUBLE! ED W. All Cooters, Help!!
Alan, you're right, I should not have jumped to that conclusion. It's just
that I'm a Quadrajet and sometimes Holley guy, and the EFI and this problem have me baffled. J.R. |
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08-18-2015, 09:46 PM
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#4 |
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Re: EFI TROUBLE! ED W. All Cooters, Help!!
I would be surprised if it's an EFI problem.
What system do you have? Using a data logger?
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Ed Wright 4156 SS/JA |
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08-18-2015, 10:12 PM
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#5 |
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Member
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Re: EFI TROUBLE! ED W. All Cooters, Help!!
I'd check the rubber brake line hose at the rear end housing.I've had 2 that all of a sudden would let fluid through under pressure but internally had collapsed and wouldn't let the pressure release. Same symptoms on our car as yours.Hope you get it fixed fast without a lot of trouble.
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Bill Bogues 4696 STK |
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08-18-2015, 10:12 PM
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#6 |
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Re: EFI TROUBLE! ED W. All Cooters, Help!!
Compare incrementals and see where you are off.
If your A/F ratio and RPM are the same, odds are your timing is as well. If your RPM is the same, but your MPH is low.................. The humidity is 22% higher on the slower pass. What change did you make with the oil (and filter)?
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Alan Roehrich 212A G/S |
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08-19-2015, 12:25 AM
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#7 |
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Senior Member
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Re: EFI TROUBLE! ED W. All Cooters, Help!!
Incrementals- 60- 1.48-1.53
594-6.75-6.92 660-7.24-7.42 1000-9.55-9.79 1320-11.52-11.82 The 330's were not working either day. Thanks so far guys, J.R. |
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08-19-2015, 10:34 AM
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#8 |
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Senior Member
Join Date: Dec 2008
Location: Rainy Washington
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Re: EFI TROUBLE! ED W. All Cooters, Help!!
Check engine to drive shaft ratio on your data logger it should tell you if it is a converter.
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James Boyce 6052 K/SA Stock National record holder 2015,2018,2 times in 2022,2023 |
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