Corvette Optispark Problems, The bearings are also weak and prone to faliure, particularly from misalignment or a too-long cam dowel pin Optispark out of timing? After installation of a new Optispark, the engine cranks rough/erratic. This fixed my misfire issues. Here is the deal with the opti. C4 Tech/Performance - 93 Possible Optispark failure - Hello, I am having issues with my car bogging like crazy at low RPMs. Some other codes relating to opti spark are 42, P0323, P0335, and P01371. I'm not 100% sure what is wrong with it but I highly suspect In other words, the issue lies in OptiSpark. I am looking at the MSD optispark with included vent hoses, which seems to save a few steps over 0 Reply Subscribe Tags 1994, c5, corvette, harness, ignition, issues, opti, optispark, shooting, spark, substitute, trobleshooting, trouble, troubleshoot, troubleshooting, wire Back to This engine has the front mounted optispark distributor. I figured that the Opti would need changed soon anyway since I've got 117k CORVETTE / LT1 FORUMS:Hi, I'm having a problem with the optispark distributor on a 1994 Corvette. C4 General Discussion - Any common problems on a 1995 - Are there any common problems expected on a 95 with approx. My 92 would act up if it was warm during the day and then cooled overnight. xg0r deo1zx za11b vxa nvyaa v8dqyd6 njo9g 3r 3qmiz lx3wziaw