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.

So after all the above information i take off the valve cover and look a the chain and its broken
1. the chain still on one side of link broke off
2. lower sproket broken (few teeth, only after i removed it did it fall apart)
3. found the problem
4 I am getting new chain kit

question: I understand my valves might be bent, trying to figure out how I can determine that without taking the head off completely.

1. Car never started
2. Car was cranked approximately 10 times before realizing the problem (not in a row few times a day over several days)
3. When manually turning valves moved up and down and sound of compression was heard

Thank You

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.

Ok. all the work is done and has spark at spark plugs
when cranking the engine feels like it wants to start (small bump noise) but will not start.
1. wondering if carburetor might be overfloat with gas since we put a bit of gas in carb and many times stepped on the gas before finding few error of why it would not start.
2. push starting did not work again it wanted but did not kick to start
3. My guess im trying is starting spray maybe it will start any thing i should check, or even how to drain gas from carburetor in case we just overflow it.

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.

Hi, I need your help PLEASE, I have a 1989 toyota Pickup with R22 engine Carb, Mileage is 185,000, I had water mixing with oil in it and a so called shadetree machanic help me take the head off and put a new head gasket on it. Then we put the head back on and put the sprocket and chain back on to the cam, but he was having a problem putting the chain on the sprocket so he had taken a wrench to the front sprocket bolt and rolled the chain on, and now the engine will not start, so I have pulled the front chain cover off and pointed the cam mark straight up and on the crank pully I rolled the #1 piston up to combustion and line the silver chain links on top and at the bottom of the crank pulley, ( But I notice when the #1 piston is at combustion the crankshaft time mark is about a inch and half to the left of the 0 mark for the timing), So can someone please tell me where do the timing marks and chain marks should go, Should the crank mark go on 0 or the #1 piston go allway up to combustion (Note: when crank is straight up at 0 the piston is just starting down past combustion) Thanks and any Help Please, Wade 12-1-06 :?: :?:

at TDC, (Make sure you are on the intake stroke TDC), the crank sprocket mark should be at 6 o'clock (crank woodruff key at 12 0'clock) with bright link on marked tooth. You must make sure not to allow chain to slack from the crank sprocket and move position. Route chain onto cam sprocket (cam sprocket mark between 2 chromed links) prior to installing sprocket on cam shaft By pulling up with cam sprocket you can get the tensioner to retract allowing cam sprocket enough reach to slide onto cam shaft. ensure the chain stays inside the dampers (guides), and cam sprocket mark is at 12 o'clock when in position on cam shaft. The keyway will be offset slightly but the mark must be at 12 o'clock. Once it is set, install the washer, distributor drive gear and retaining bolt and torque to specs. Check the endplay with gauge. rotate the crank at least 720 degrees to insure marks retain alignment.
Hope this helps.

Thanks, but can you tell me what the intake stroke would be on TDC, I'm not too familier with that. Wade

Engine Mechanical problem
1983 Toyota Pickup 4 cyl Four Wheel Drive Manual

my timig chain has sliped and bent valves i have replaced the vavles and i need to re time my engine and dont no were the marks are to re time it

See below