C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Quick L98 timing question......

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Old Jun 10, 2011 | 06:52 PM
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Default Quick L98 timing question......

set timing per factory spec to 6*btdc. take the car to get state inspection and it fails, guy says its because my timing is set to 14* so i take the car home and check the timing, its set at 6*..... am i doing somehting wrong or is he retarted,,,, he has one of those fancy timing lights with the dial on it, i have a plain jane autozone inductive timing light.....

PLEASE ADVICE

yes i disconected the wire when i checked and set timing,,, and so did he
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Old Jun 10, 2011 | 08:52 PM
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I would trust your simple light before I would his. To solve your immediate problem take it to a Chevy dealer, explain your problem and ask for a timing check. I'll bet the Service Manager will do a check for free. If I am correct this will be the only thing you will ever get for free from a dealer.
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Old Jun 10, 2011 | 09:40 PM
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Just a hunch, but did he check your timing with oyur distributor connected to the ecm or did you set the timing with the lead connected? If the distibutor is not disconnected when checking or changing base timing, it will be different.
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Old Jun 10, 2011 | 09:59 PM
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Maybe your balancer has slipped and therefore your timing shows 6 deg while it actually is at 14.....just a guess
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Old Jun 10, 2011 | 10:18 PM
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I took the car back to him and brought my timing light. I showed him it read 6*btdc, he scratched his head. I asked him how he came to 14* he said he thought each notch was 20*... and he also had the dial on his fancy timing light in the wrong place.
I don't really like people touching my car, I am this cars mechanic, this just re affirmed why
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Old Jun 10, 2011 | 10:28 PM
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And now that you know that this guy can't read his own timing light....you are going to trust him to do a SMOG check????

Not only can't he read the light, but the timing notches are MARKED.. at "0" and then 4 degree increments before and after!!! OMG

Last edited by John A. Marker; Jun 10, 2011 at 10:31 PM.
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Old Jun 11, 2011 | 03:31 PM
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Originally Posted by John A. Marker
And now that you know that this guy can't read his own timing light....you are going to trust him to do a SMOG check????

Not only can't he read the light, but the timing notches are MARKED.. at "0" and then 4 degree increments before and after!!! OMG
Im actually kinda pissed about it.... i will not be returning there
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Old Jun 11, 2011 | 04:41 PM
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sounds like the idiot falls into the "room temperature IQ" segment of society. he really should be flippin' burgers instead of performing emission testing, but then again, i really don't want him touching my food either...
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Old Jun 12, 2011 | 04:14 PM
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Originally Posted by Heimlich2010
Im actually kinda pissed about it.... i will not be returning there
This is why no matter what my issue is I research it online and do the work myself. Can't trust any mechanic.
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Old Jun 12, 2011 | 06:01 PM
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I asked why this guy was an idiot from your other post. Now I understand why.
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Old Jun 12, 2011 | 06:15 PM
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What part did you fail? NOX? Hydrocarbon?
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Old Jun 12, 2011 | 06:22 PM
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Originally Posted by ex-x-fire
What part did you fail? NOX? Hydrocarbon?
Barly passed the HC test at the 15mph test max was 78 i measured 78... i failed the CO test on the 25mph test max was 0.42 i measured 0.62
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Old Jun 12, 2011 | 07:16 PM
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Make sure your o2 sensor(s) and air pump system is working good, did you get the engine nice 'n hot for the test? You might have to run it hard down the hiway before you test it. If everything is good like compression, vacuum, tune up parts, & clean injectors, you might be looking at a cat converter issue.
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