Timing chain marks

SPARK TEST - CAMRY, CELICA, CRESSIDA, PICKUP, SUPRA 7M-GE ENGINE & 4RUNNER 1. Check ignition coil and distributor connections. On Celica 3S-FE engine, remove spark plugs and spark plug wires. Attach spark plugs to wires and ground plugs. On all other models, disconnect ignition coil wire from distributor and hold wire about 1/2" away from ground. 2. Crank engine and check for spark. If sparks occur, check for other source of starting problem. If no sparks occur, remove distributor cap and check ignition wire resistance. If wires are okay, go to next step. If not, replace wires as required. 3. Place ignition switch in "ON" position. Check for voltage at ignition coil positive terminal. If voltage is present, go to next step. If not, check wiring between ignition switch, coil, and ignition module. 4. Check ignition coil resistance. See IGNITION COIL RESISTANCE TESTS in this article. If coil resistance is correct, go to next step. If not, replace ignition coil. 5. Check pick-up coil resistance. See PICK-UP COIL RESISTANCE TEST in this article. If resistance is correct, go to next step. If not, remove coil and replace distributor assembly. 6. Check air gap between reluctor and pick-up coil. If air gap is incorrect, remove coil and replace distributor assembly. If air gap is correct, replace ignition module (Celica 3S-FE engine only). On all other models, go to next step. 7. Check for "IGt" ignition signal from ECU at ignition module. If reading is about one volt, replace ignition module. If not, check power and ground wiring to ECU. See Fig. 3 and Fig. 4 . Check wiring between ECU, distributor, and ignition module. If wiring is okay, replace ECU. NOTE: To prevent gasoline from being sprayed from injectors, crank engine for no more than 2 seconds at a time.
Coil Insulation Resistance Isolate coil from remainder of system. Measure resistance between ignition coil positive terminal and distributor housing. Reading should exceed 10 megaohms (infinity). PICK-UP COIL RESISTANCE TEST 1. On Camry and Cressida, measure pick-up coil resistance between terminals "G" and "G(-)", and between "NE" and "G(-)". On Corolla 4A-GE engine and MR2, measure pick-up coil resistance between terminals "G(+)" and "G(-)", and between "NE(+)" and "NE(-)". Refer to Fig. 6 . 2. On Pickup, Van, and 4Runner, measure pick-up coil resistance at distributor connector. See Fig. 6 . On Corolla 4A-C engine and Tercel, measure pick-up coil resistance at ignition module terminals. 3. If resistance is incorrect, replace pick-up coil/breaker plate assembly on Corolla 4A-C engine and Tercel. Remove ignition coil (if equipped) and replace distributor assembly on all other models.

TIMING CHAIN Removal 1. Remove cylinder head. Remove radiator. Remove engine under cover and engine mounting bolts. Place a jack under transmission and raise engine about 1" (25.4mm). Remove 16 bolts and 2 nuts. Using Oil Pan Seal Cutter (09032-00100), remove oil pan. 2. Remove power steering belts (if equipped). Remove A/C belt, compressor and bracket (if equipped). Remove fluid coupling with fan and coolant pump pulley. Set No. 1 cylinder to TDC of compression stroke. Remove crankshaft pulley. See Fig. 4 . 3. Remove No. 1 coolant by -pass pipe. On carbureted and fuel injected models, remove 2 bolts and disconnect heater outlet pipe. On turbo models, remove 2 bolts and No. 3 turbo coolant pipe. Remove fan belt adjusting bar. 4. Remove timing chain cover assembly. Remove chain from damper. Remove cam sprocket and chain. Using gear puller, remove both oil pump drive spline and chain sprocket. Fig. 4: Exploded View of Timing Chain Components Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. Inspection 1. Check chain, sprockets, tensioner and chain dampers for wear. Replace chain tensioner if width is less than .43" (11 mm). Minimum size for left and right chain dampers is .02" (.5 mm). 2. Measure length of timing chain with chain fully stretched. Maximum distance between 17 links should be 5.79" (147.0 mm). See Fig. 5 . 3. Wrap timing chain completely around camshaft sprocket. Using a Vernier caliper held parallel to sprocket, measure outer sides of chain rollers. Using same method, measure crankshaft sprocket and chain. 4. The minimum dimension for crankshaft sprocket and chain is 2.34" (59.4 mm). The minimum dimension for camshaft sprocket and chain is 4.48" (113.8 mm). If either measurement is less than minimum, replace chain and both sprockets. Fig. 5: Checking Timing Chain Stretch Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. Installation 1. Ensure No. 1 cylinder is at TDC (crankshaft Woodruff key will be on top). Position sprocket on crankshaft. Place timing chain on sprocket with single bright link is aligned with timing mark on sprocket. 2. Install cam sprocket in timing chain so timing mark on sprocket is located between 2 chromed links. See Fig. 6 . Ensure chain is positioned in dampers. Slide oil pump drive spline over crankshaft key. Install cover assembly with new gasket over dowels and pump spline. 3. Continue installation in reverse of removal procedure. Set camshaft timing by placing No. 1 cylinder at TDC on compression stroke and positioning camshaft so dowel on sprocket flange is in 12 o'clock position.

Head comes off anyway...tip it over and pour alcohol in cyl, head chambers, if it leaks out, take it to a machine shop.

Did you change your oil and filter? Gas will clean the cylinder walls and you not only loose compression, but you can damage the engine if too much gas is in the crankcase. Change oil, then squirt a few drops of oil in each cyl, re install good plugs and she will start if the chain and base timing are right. Also the wires are routed to the right plugs.

See below