Crankshaft And both Cams Are Turning. Timing Belt Appears Fine. Car Was Running Fine Then Died At A Stop Sign And Will Not Restart. Engine Has Spark And Fuel. Did A Compression Test And There Is Zero Compression In All 5 Cylinders.
Sounds like either something has completely obstructed the air flowing into the engine which is unlikely or your Timing belt skipped and bent all the Valves on one Camshaft or both. Pull the Timing Covers off and see if the timing marks line up when on #1 Cylinder is on Top Dead Center. If they are not on a 98 and older you will have bent Valves. On the 99 and newer the exhaust cam has a Variable Timing hub and the cam could have turned leaving the timing marks in place and bending the exhaust Valves. Sorry for the bad news.
SOURCE: one cylinder has zero compression. took head off
OK!... did you do a cylinder 'leak down test'?.. .if not, do it! If any 'unacceptable' leakage, have the head REDONE! NOW!.. you must BE SURE the valve timing is accurate!... Go to www.hmaservice.com and register( Vehicle by VIN). Afterward, you have access to shop manuals, service bulletins, wiring diagrams, etc. about your vehicle.
SOURCE: 2004 Kia Optima no start after timing belt, crank, cam sensor replacement
did you use aftermarket crank sensor? if so that might be your problem. dealer has several different ones, by providing vin number, but there is only one after market for all optimas 01-05. try to connect thick pink wire and thick orange wire together on the ignition failure sensor. you might have the same problem as me. good luck.
SOURCE: Engine ran fine. Stopped it. Could not restart.
try spraying starting fluid in the breather and see if it tries to start if so check fuel lines etc. to make sure that it is getting fuel to it.
next would be check injectors to see if they are getting voltage to them.
Testimonial: "Your tip was helpful, but the engine did not try to start with the ether sprayed into the air intake after it was removed from the air box. "
SOURCE: engine has compression and fuel.
check the crank sensor.... maybe it broke when the belt broke. the sensor give signal to spark plug to work.
SOURCE: dead cylinder....timming is right, getting fuel,
cant happen, you missed something, if you have spark, fuel and compression the cylinder will hit, go check again, when doing the compression test kill the spark and lock the throttle wide open. most common thing we see on the 1.0L 3cylinder is burnt valves most common cause is the wrong motor oil the valve lifters can not release the oil back threw the bleader hole if you use to heavey a motor oil, we see owners change the oil and use 10W-30 or 10W-40 and usely within 5000 miles the valves will burn, if you want to use the heaver oil then you need to replace the lifters with an updated part number that has the abilty to use the heaver oil.
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