1999 2.7ENG INTREPID, CAR SITTING IDELING, POPPED, QUIT. WHEN I STARTED CHECKING I FOUND THE TIMING CHAIN BROKEN, ABOUT 5 LINKS TOTALLY DESTROYED. I HAVE BOUGHT NEW CHAIN,GUIDES ETC, HOWEVER I BELIEVE I HAVE MORE TROUBLE. WHEN I ATTEMPT TO SET TDC ON #1 COMPRESSION, I GET A TIGHT SPOT RIGHT BEFORE THIS POINT. I HAVE NOW DROPPED OIL PAN AND CRANK GUARD TO CHECK CRANK AND RODS, HAVEN'T CHECKED YET, KINDA THINKING MIGHT HAVE VALVE PROBLEM, HOW CAN I CHECK VALVES WITHOUT REMOVING HEADS?AND DOES THIS SEEM LIKE THE RIGHT PLACE TO START LOOKING? ANY INSIGHT IS APPREIATED. THANKS.
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Re: TIMING CHAIN BROKEN
Yes it is very possilbe that it bent the valves as these cars do that when the timing belt goes. i reccomend taking off the head and taking it to a machine shop to eveluate. it is easier and cheaper as you do not have the proper equipment to do so. also replace water pump and head gasket as well. nothing is wrong with the bottom end of the motor. it is the head
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The timing is set by aligning the marks on the camshaft gears and the crankshaft gear with colored links on the chain. See the included link for guidance (it's for a Sebring, but the information is the same for an Intrepid). Be aware that rotating the engine after initial timing will change the relationship of the colored links with the gears. This is OK, just BE SURE THAT THEY ARE ALIGNED when the chain is INITIALLY installed. Chrysler Sebring Concorde 300 2 7L timing replacement Cloyes kit 9 0397SA
If it was "steaming", "slowing down" and finally "quit running", it doesn't sound out of time to me! It sounds SEVERELY OVERHEATED. I would be checking the engine coolant level. If it is low (which it sounds like it most likely is) Then you need to find out where the coolant is leaking from. Maybe you will get lucky and the engine will not be totally destroyed.
Also check for engine coolant in the oil....If there is coolant in it, it will look like a chocolate milk shake. this is an indication of blown intake or head gaskets, cracked cylinder head and/or cracked/broken cylinder walls. (very likely on an overheated engine)
the timing marks are located on all four cam cogs and the crank cog. there are also timing marks on the chain itself. there are three gold colored links on the chain. these corospond to the three cogs. good luck.
It will say on the emmission sticker-usually + or - 5 degrees atdc( some say to disconnect the vac. line and some say to leave it connected).. A major issue is the timing chains strectching and breaking. If the car hasn't been started and the engine is cranked without disconnecting the ignition system the oil pressure isn't built up and the chain slaps around alot and could damage a guide rail or stretch the chain. The first thing I would do is inspect the mechanical timing and then go from there.
dear friend-if you are positive that all the repairs were carried out with great care,that the timing is right,and you got spark and fuel,all the valves close propely,then it should start,if the sensor was ok before you stripped the engine why should it be faulty now.
Is this is a 2.7 or 3.2, 3.5 liter? It sounds to me like the valve timing is off enough to make the motor misfire. If this is the case, then the timing chain or belt needs replacement. The 2.7 has a chain that is very involved to change, but can be done. The 3.2 or 3.5 has a belt that is a bit easier to do. Neither one is a cake walk and I would get a manual on this car before working on it. Don't run this motor without checking this out as you may damage it.
you will need new upper timing chain and sprockets. Common problem on altima your year. Nissan has TSB for it. First they had us remove the upper timing chain guide, but after that, they had us replace all top chain components.