TheInstaller Posted August 2, 2006 Share Posted August 2, 2006 OK, while cruising on the highway on Sunday, my timing belt broke. I have already replaced it, but when I started the truck up it was running really rough. After some testing, I found that I can remove all the odd numbered plug wires and it runs the same. If I try removing one of the even number plug wires, it won't even start. I figure I have some belt valves on the on the passenger side, but is it possible that I somehow miss timed that cam? I checked the all the timing marks, but is it possible I somehow still have it out of time where only one bank of cylinders is correct? Link to comment Share on other sites More sharing options...
94extreme Posted August 2, 2006 Share Posted August 2, 2006 yeah if the passenger side cam is off then you'd get what you're describing.. possibly.. search the forums or PM slick she remembers the number of teeth between each sproket. Link to comment Share on other sites More sharing options...
RedPath88 Posted August 2, 2006 Share Posted August 2, 2006 FSM Number of timing belt teeth 133 Between L.H. and R.H. camshaft sprokets 40 Between L.H. camshaft sprocket and crankshaft timing sprocket 43 Link to comment Share on other sites More sharing options...
94extreme Posted August 2, 2006 Share Posted August 2, 2006 or just wait for red88 to show up and give you the official skinny. Link to comment Share on other sites More sharing options...
Slick Posted August 2, 2006 Share Posted August 2, 2006 lol. that totally sux installer! me sowee 4 u. yes. that one cam could be out or not TDC..... and the teeth has already been answered i guess........ i will now sulk back off to my corner....... Link to comment Share on other sites More sharing options...
Precise1 Posted August 2, 2006 Share Posted August 2, 2006 Since it is all on one side, yes, I'd guess it could be mistimed. If the marks line up, then count the teeth between and go from there. Could that head be fubared enough that it won't make any difference ?? What year truck, and how many miles on it/since the last T-belt change ?? B Link to comment Share on other sites More sharing options...
87pathy Posted August 2, 2006 Share Posted August 2, 2006 when mine broke, it was the same conditions as you mensioned. I guarantee you ran the valves into the pistons. I personally bent 6 of 12 valves. I'd pull the heads Link to comment Share on other sites More sharing options...
Guest wirespider Posted August 2, 2006 Share Posted August 2, 2006 Yep I'm more inclined to agree with 87pathy. From my experience, if the belt broke and you wasn't just putting a new one on you can pretty much count on those valves being messed up. Link to comment Share on other sites More sharing options...
Casey.T Posted August 2, 2006 Share Posted August 2, 2006 Based on what happened on mine, Im betting bent valves.... But it could be that it is just the timing, If you have a timing light check it, when I put my jdm back together it was dead nuts per the book, but my Distributor was off by about 3 teeth.... Double check the Timing marks on the cams and crank, compression check it... The Dizzy will not affect the compression, but if your cam is off by even 1 tooth it can run like $hit... Link to comment Share on other sites More sharing options...
JoeBob Posted August 2, 2006 Share Posted August 2, 2006 I need to replace my timing belt sometime soon.. but my mechanic said that with this type of engine if the timing belt broke.. the engine would be ok.. but after hearing what happened to you two would it be safer to replace it now? Link to comment Share on other sites More sharing options...
gillj Posted August 2, 2006 Share Posted August 2, 2006 Id agree with the guys before me if your cruising and your interference engine's t-belt broke your going to bend some valves do a compression check to be sure but you can bet youll be doing some head work soon hopefully not for your sake but pathys are if im correct all interference motors sorry Link to comment Share on other sites More sharing options...
Casey.T Posted August 2, 2006 Share Posted August 2, 2006 JoeBob Posted: Aug 2 2006, 11:21 AM I need to replace my timing belt sometime soon.. but my mechanic said that with this type of engine if the timing belt broke.. the engine would be ok.. but after hearing what happened to you two would it be safer to replace it now? Do it now not later.... And Find a new Mechanic, that one does not know $hit... Link to comment Share on other sites More sharing options...
unccpathfinder Posted August 2, 2006 Share Posted August 2, 2006 (edited) when i broke my belt i bent the exhaust in # 1 and #3 and the intake in #1...she ran like @!*% but she ran...to trouble shoot either run a compression test on each cylinder...the poor mans way get a good set of insulated plyers and pull 1 plug wire at a time if the idle changes/dies then that cylinder is good if nothing changes then that cylinder is dead... most likely a bent valve...if thats the case u can get the parts and do the job ureself in a day and a half if u've got some help and have a decent mechanical ability... i also have 2 good heads if u end up needing them make an offer and u can have'em I need to replace my timing belt sometime soon.. but my mechanic said that with this type of engine if the timing belt broke.. the engine would be ok.. but after hearing what happened to you two would it be safer to replace it now? if u've got a 4 banger u've got a chain i believe and its non interference...if its a v6 u're mechanic is wrong and i'd change it before its due or get it in writing that if it breaks he'll pay for everything and some1 else to do the work (so he cant shortcut) from left to right...bent bent straight bent Edited August 2, 2006 by unccpathfinder Link to comment Share on other sites More sharing options...
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