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

engine wont fire... dont know the problem

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Old Sep 20, 2011 | 10:42 AM
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95batmobile's Avatar
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Default engine wont fire... dont know the problem
I was driving one day and after giving it a little gas i come down to idle and it does a few little pops and shuts off... not actually backfiring but like a mini backfire... it sounded like somthing hitting the piston at first, but now that it has sat it does not make a sound it just wont fire... i checked the compression to see if the timing chain was broke on not and its right on... right before TDC it builds pressure and at TDC its a pressure.... so the next sstep is to check the opti timing..... not sure what the problem is but some imput would be nice..

i also checked the rockers and springs... no problems there
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Old Sep 20, 2011 | 10:49 AM
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see if you have spark comming out of the coil and check fuel pressure..........
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Old Sep 20, 2011 | 10:55 AM
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Check for bent pushrods, check spark, and check for fuel with the schraeder valve at the back of the intake manifold
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Old Sep 20, 2011 | 11:18 AM
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Sounds like dead opti symptoms to me....my car died all the sudden with some popping sounds one time the opti took a ****.
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Old Sep 20, 2011 | 11:27 AM
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Could be, but we wanna eliminate all other options before saying that...a coil going out while driving exhibits almost identical symptoms of an opti failure
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Old Sep 20, 2011 | 11:28 AM
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Except a coil is MUCH cheaper lmao
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Old Sep 20, 2011 | 11:45 AM
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lol ok i have a fuel pressure guage cuase i have had so many problems lol and its right on.... as far as spark ill check tommorow i hope its the coil! lol
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