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2000 avalon will not start after timing belt replaed.Marks are on,good compression,spark and pulse,Spark plugs get gas fouled and on WOT cranking engine sounds like ignition in intake manifold.
Re: 2000 avalon will not start after timing belt...
Check the spark plug wires are properly placed for firing order if it is a 4 cyl it should be 1 3 4 2 I don't know the v6 order if that's not it then your 180 degrees out and need to remove the timing belt and rotate the cam one full turn replace timing belt and try again
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If you give it time to cool off between starting attempts, it should hold up to it. If you use the starter for 15 seconds trying to start it, then give it a full minute to cool off before trying again.
Do you have compression in all cylinders? That and spark and gas is all a good-timed engine needs in order to run. Actually I would do it in this order: check for spark going to the spark plugs, if good, check that gas is getting into engine (carb or fuel injected? you would see gas coming out of either one- down the throat of the carburetor, or out the bottom of the fuel injector in a cone pattern, while cranking the engine over and watching). If spark and gas are good, then better check compression. See if your work really sealed the cylinder chambers. A compression test will verify this. Cause the next thing you will have to check is if the valve timing is right. You will need to make sure the timing marks are spot on. This may be a tedious job. Removing a few parts to check the timing marks.
So just remember, spark, gas, and compression. that's what the cylinders need to fire and run, but the timing has to be correct.
most , guys will just assume the engine is ok, that is has good compression with fingers crossed and then
1:operators guide, use WOT cranking to unflood, it. oops don't start.
2: so, checks spark to all cylinders. no spark no run.... ever.
3: if spark is good, he tries test fuel.
fails, mech then he thinks, gee , is engine really good? hummmm
id does use the strobe light to sees spark is landing right.
No, it is not?, must be cam timing slip. belt or change (belts fail 10x chains but owners ignore the chain screaming, sooooo)
ok timing (both) is good, he pulls 1 spark plug , omg , these are 10 years old
he says,,, and black and soaking in gas, tuneuptime.
ok they all look good, and runs on test fuel now. then stalls in 3sec.
well, bad fueling (ask why, much longer story,,,,,,,,,,!!!!)
If you are getting spark to the plugs and fuel spray, and you have compression and the spark is at the right time, you should have explosion. Is it possible the valve timing is off - timing chain issues ? Are the new plugs fuel-fouled ?
To review - - if you have spark, fuel, and compression, you should have combustion. In this case, if the timing belt is damaged, you might not have compression or spark at the right time. A faulty crank or cam sensor could cause you not to have spark at the right time. The spark plugs could be worn out or fuel fouled and not able to fire under compression. Did the car die or just not start ?
In short your engine will require 3 things to fire, spark/timing of, fuel, and compression. Check the easiest 1st, pull a plug wire and check for spark, if there is spark crank the engine over a few times more then remove a spark plug, if there is fuel on plugs you have gas flow and injector pulse, now check compression if there is good compression you should have good timing. Please check the above and let me know waht you do / do not have, from there we can narrow it down and get you an answer. Could very well be a crank sensor or such, until you narrow it down, the possibilities are endless.
sorry your tiburon won'y start and you have spent so much money with no results.so lets start with basics, is battery voltage at least 12 volts and does the engine crank over ?, next do you have fuel pressure of 50 psi and good volume?remove a fuel injector electical connector and test for injector pulse.then perform a fuel pressure drop test on each inj.this will tell you if they are spraying.do you have good spark at all the sparkplugs? perform a compression test, spec is 203-218 psi. next you will need to check camshaft timing by bring # 1 cyl. to tdc on the compression stroke and checking the timing marks on the crank and camshaft gears.wish you the best let me know the results.
It may be one tooth off. That all it takes. One tooth on the belt of the crank or cam. The computer gets it's spark pulse from a sensor on the crankshaft. If it gets the pulse a fraction of a second to late or too early it won't time correctly. Check it out one more time. Hope this helps. Good luck and thanks for using FIX-YA.
1. Test Fuses. Test both under hood power distribution center and the fuse panel under dash. This is done with a test light tool. The test light should illuminate on both sides of the fuse, if not the fuse has failed and needs to be replaced. 2.Testing Fuel Pressure Test for proper fuel pressure with a test gauge on the fuel rail, most throttle body injection cars (TBI) are between 13 psi and 17 psi. and most (DPI) direct port inject systems are between 40 psi and 55 psi. If no or little fuel pressure is observed and there is 12 volt power present the fuel pump, the fuel pump needs replacing. 3.Checking Timing Belt Test for compression by removing a spark plug and insert a compression gauge. Crank the engine over about 5 seconds the gauge should read between 125 psi and 165 psi, if no compression is observed remove front engine cover to inspect timing belt or chain. Crank engine to observe cam rotation, if the cam does not rotate the timing belt or chain has failed. (note: if the timing belt drives the water pump it is best to replace the water pump at this time) 4.Test for Injector Pulse Remove injector connector to insert injector test light (node) or volt meter. Observe light flash or gauge pulse while cranking. If light/voltmeter doesn't respond, an ignition distributor/crank angle sensor (CKS) or an ignition module is most likely your problem. 5.Test for Ignition Spark Remove spark plug wire, insert an extra spark plug into end of wire, rest spark plug next to a ground source then crank engine. You should observe a blue spark between the spark plug gap and ground source. If no spark is observed, an ignition coil, ignition rotor or spark plug wires might have failed. (always keep hands away from engine when cranking)
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