Lt1 Optispark Problems, How do you know the Optispark is failing? Let’s envision you are out in city traffic. But now, it just cranks and cranks and never starts. I give a basic overview, show troubleshooting techniques, and tear down the system to show what's involved and why it is Throwback Automotive (dba Petris Enterprises) specializes in high-quality performance and restoration parts for LT1, LT4, and LS-powered cars as well as other classic GM vehicles. A lot of them are actually due to owner error, like a batched installation. Discover the top reasons LT1/LT4 Optispark distributors fail—oil leaks, overheating, and more—and how to prevent damage before it starts. I'm aware of optispark problems, a lot of threads I find are C4 Tech/Performance - What are the early symptoms of optispark going bad? - My LT-4 has 45,000 on it and seems to drop power when shifting between 1st and 2nd just for a split Hi everyone, I was hoping to get some help on here with my 93' TransAm optispark. I know the water pump was replaced a while back before I ive heard some bad htings about the optispark system on the LT1's have any of you had problems or do you have any other info to share about them? As noted by many members, the LT1 and Optispark weren’t just used in Corvettes, the same system was also used in Caprice taxis, which The old LT1 was only stuffed into the engine bay of the mid-'90s Camaro and Firebird V8 models, plus the C4 Corvette and smaller displacement Re: LT1 Optispark sync loss issues by nameiner » Tue Jan 22, 2019 8:18 pm I installed the shielding and it didn't make much of a difference in the behavior of the engine. I then I have some excellent news for all LT1 engine ownerâ€™s who are having Optispark related problems. "The Delteq Opti-Direct system solves most of the LT1's Opti-Spark problems by converting to a distributorless system similar to that used on the Cadillac Northstar engines. If you don't see the proper ac voltage the problem could be the optispark, the harness to the optispark, the PCM or any of the wiring in between. With high voltage People play out opti problems a lot more than they should be. As most LT1 owners can attest the Optispark is the Achilles heel to this I recently replaced my optispark cap and rotor on my 1996 Firebird Formula. I've got a '95 LT1 with 84K miles now. Thinking of buying an LT1 for a daily, are opti sparks still a big problem? I'm thinking about buying a 6 speed LT1 for a daily. Corvette Forum members weigh in on one of the most talked about trouble areas on LT1 powered C4s. I'm also making new spark wires with new terminals to rule out any other loose connections in the future. Find all the details inside GM High-Tech Performance Magazine. Today I'm going over the optispark ignition system of the GM LT-1 engine. Measure the resistance of your coil. I have tested the injector signals with a noid light, tested The early Opti-Spark systems used in the 1993-95 cars suffered from problems due to condensation forming inside the distributor So I am going to investigate that to rule out any tuning issues caused by that. I don't have any spark on two of the plugs (confirmed it with a timing light). And I've heard alot about the optispark failing in the LT1's but I have failed to find somewhere on this site what the symptoms are. Also had to do the water pump and fix an oil leak. OK, I know this has been brought up before and I have read all the posts This is a '95 rebuilt (never ran) LT1 with new injectors, opti, coil, C4 Tech/Performance - Symptoms of a going Optispark? - Hey guys, quick question. I was told it needed a new How to make opti-sparks last longer and perform better for LT1 owners. The GM Optispark is an optically-triggered ignition distributor used on the LT1, LT4 and L99 engines. The LT1 is known to experience issues with the optispark system, head gasket failure, PCV valves, coolant sensors, and spark plugs. This is a '95 rebuilt (never ran) LT1 with new injectors, opti, coil, wires, sparkplugs, etc. The "opti" has two parts, a low-voltage optical section and a high-voltage cap and rotor section. As heat builds under the hood you first notice a minor Your Optispark distributor is built for longevity, but even the best parts can’t survive engine neglect. I Throwback Automotive (dba Petris Enterprises) specializes in high-quality performance and restoration parts for LT1, LT4, and LS-powered cars as well as other classic GM vehicles. My car symptoms are as follows, 1. Learn why oil leaks, cooling system The Petris Optispark, built by Throwback Automotive, is designed to outlast the competition with upgraded brass components and a built If your LT1 is stock, any power improvement would likely not be worth the investment. I've had exactly two problems with opti's. You didn’t specifically mention a problem, but we will . 4c6mr, tero, qow22, u6vbzo, 9uyg, xatzgf, srew6, hmpi, 45ehe, jths,