Power wash LT1 no spark
03-07-2011, 10:35 AM
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Power wash LT1 no spark Alright well heres the story, I had traded my 92 5.0 mustang for this trans am because it was my dream car. Its a 93 Trans Am M6 with 105000 miles on it and has all the records of everything done to it. So i traded the guy for it. He told me that it ran before he power washed the engine and he was tired of trying to fix it. He said that he changed the optispark, coil, and icm. They are all new and i can confirm that, but the car gets no spark out of the coil pack. My brother and I checked to see if it was getting power to the icm and coil and it is. We checked if the opti is sending a signal to the injectors and it is. Im still confused on how its not getting spark. Help is much appreciated. Also i followed this tut http://www.mainstreamtopics.com/foru...rt-diagnostic/ with no luck.
I would love to get this car running thanks!
I would love to get this car running thanks!
Hopefully you get it figured out. 
03-07-2011, 10:40 AM
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03-07-2011, 10:43 AM
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03-07-2011, 10:51 AM
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maybe you got a bad opti, even though it is brand new it might be defective. i bought a brand new opti from summit and i ripped all my engine apart and put the new one on and i had to rip it all back down to send back due to it being defective, PITA.
03-07-2011, 10:51 AM
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When it happened to me, replaced my icm and still didn't work. Replaced the entire ignition system, and Nada. My car went thru icms like oil changes. Best bet is try pulling one off someone's running car, Ive got bad ones from the parts store before. The shbox write up works wonders tho.
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03-07-2011, 10:58 AM
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Dang this is gonna be expensive, well i already have the front of the engine off so thats good and ill try out these methods! Only if my brothers z28 wasnt in dallas that would help alot
03-07-2011, 11:01 AM
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there is a guy on Camaroz28.com who will be able to tell you whats wrong with you car, hes really smart about this stuff, this is his username Injuneer. look him up and ask him whats wrong, i am about 90% that he will know what to do with this situation
03-07-2011, 11:42 AM
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Alright thanks man
03-07-2011, 05:02 PM
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03-07-2011, 05:09 PM
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I have a box of spare 93/94 optis and opti parts sitting in my garage that I'll never use if you're interested.
I have at least two complete ones in there that I know are good.
I went with the EFI Connections kit instead.
I have at least two complete ones in there that I know are good.
I went with the EFI Connections kit instead.
03-07-2011, 05:45 PM
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That would be great! How much do you want for them?
03-07-2011, 05:57 PM
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Just take the damn thing out, take it apart and dry all the parts off! THEN put it back together, install in the car and you should back in business, also make sure all the other electrical parts are dry too, ask me how I know!
And don't do this again! OK? OK!
And don't do this again! OK? OK!
03-07-2011, 06:39 PM
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Haha it wasnt me that did this i got the car not running and it has a new opti in it with all new ignition parts and its still not sparking out the coil. Could a bad opti harness do that?
03-07-2011, 06:53 PM
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Good luck, your education of the LT1 begins NOW!
08-04-2016, 03:41 PM
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re: power washing a LT1 engine I power washed my 94 Camaro Z28
After that it would not start.
Acted like Timing was off.
I have had this problem before with small block Chevy's, and pulled the distributor cap shot some WD-40 in it, PROBLEM SOLVED.
On LT1 can't do!!
So when this happened on my Z28 I took a hair drier layed it above the distributor so it blew on the top of distributor, let run blowing hot air on distributor for about 1.5 hr.
Then layed it under distributor on top of steering linkage to blow about 2 hr on bottom of distributor. PROBLEM SOLVED started right off!!
After that it would not start.
Acted like Timing was off.
I have had this problem before with small block Chevy's, and pulled the distributor cap shot some WD-40 in it, PROBLEM SOLVED.
On LT1 can't do!!
So when this happened on my Z28 I took a hair drier layed it above the distributor so it blew on the top of distributor, let run blowing hot air on distributor for about 1.5 hr.
Then layed it under distributor on top of steering linkage to blow about 2 hr on bottom of distributor. PROBLEM SOLVED started right off!!