1994 Lexus LS 400 Repair Question
Mileage: No information provided.
1994 Lexus LS 400 after tune up car stops
Answer
Hi summa, Welcome to 2carpros and TY for the donation
Cranking over and will not start. Do below to determine if its fuel, spark and compression related issue
Fuel and Spark:
Get a helper disconnect a sparkplug wire or 2 and ground it to the engine atleast 3/16 in away from ground have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs,coil's resistances,cap and rotor /distributor pick-up coil, ignition control module, ECM,Ignitor camshaft and crankshaft sensors and computer. Note: If it doesn't apply disregard it
Compression:
If both correct fuel pressure and snapping blue spark is present-check engine compression could be a valve and ignition timing, issue -this will lead you to problems with compression and valves opening and closing at the wrong time/broken or jumped timing belt/chain
Thank you so much i was so upset because i thought the guy try to get over on me but i took it to another shop and they said what you said, so now im feeling a little better about the situation. Again thank you