Engine shut off and wont start Help plz?!? - Mustang Evolution

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Old 10-03-2011, 06:09 PM   #1
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Engine shut off and wont start Help plz?!?

I have a 1996 mustang gt I just finished the PI headswap longtime headers 24lb injectors and stage 3 cams from MHS I also have other bolt on mods. I was pulling it into my driveway and the motor just shut off . When I tried starting it I hear one click that sounds like the starter . I got tue battery tested And it's fine . Also tried jumping it Does anyone know where I should check next It's super frustrating ...
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Old 10-03-2011, 06:29 PM   #2
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Well for the starting issue its either a starter or your battery cables/terminals. Thats why it just clicks. With it jist shuttin off that could be many things but unless your car has been tuned thats a very good possibility of being the problem
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Old 10-03-2011, 06:39 PM   #3
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Ya definitely check the cables. And you could also try whacking the starter a bit to break it free with a pry bar. But if it stalled on you that wouldn't be a starter. You got a battery light on is it charging? You should check the oil and be sure the motor turns. Seized motor could cause the starter to click I know you don't want to hear that though.
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Old 10-03-2011, 08:54 PM   #4
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Ya I haven't tried turning it over manually yet I hope it's not seized But I haven't gotten the dyno tune yet I was just driving it around to see if everything was running good I hope I didn't mess it up I just finished the install lol I've driven it like 100 miles maby and everything ran very smooth until that happen But there were no noises or Anything it was just like turning the key off
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Old 10-03-2011, 10:20 PM   #5
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Ok well the first step is check the engine and be sure it turns over. Then you need to at least get it to crank over before you can even begin to figure out why it doesn't start or why it stalls. Just be sure the battery is good and all connections are good at the battery and the starter. And if everything checks out try bumping the starter. Also check ALL your fuses. There is a small ignition wire that goes to your starter when you turn the ignition to start it will apply 12 volts to this wire be sure there is power there. There is another big fat wire coming directly from the battery that should have 12 volts at all time.
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Old 10-04-2011, 11:33 AM   #6
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Ok Gonna go out there and try all off the things u guys have said Thanks a lot for the help I'll keep u updated on what I find out
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Old 10-07-2011, 09:51 PM   #7
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Well u were definitely right black Gt The motor is locked up . Talked to a friend He thinks since I reused the tensioners that they lost oil pressure and it jumped timing Soo hopefully just some bent valves So now the fun begins lol
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Old 10-08-2011, 03:18 AM   #8
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There's nothin wrong with reusing tensioners unless they are obviously weak or broken. The only way they would lose pressure would be something plugging their inlet on the back of them. You would have heard and seen it If it was bad cause you would have had bad slack in the chains and had chain slap when fired it up
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Old 10-08-2011, 07:45 AM   #9
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Quote:
Originally Posted by t0t4lbl4ck0ut
There's nothin wrong with reusing tensioners unless they are obviously weak or broken. The only way they would lose pressure would be something plugging their inlet on the back of them. You would have heard and seen it If it was bad cause you would have had bad slack in the chains and had chain slap when fired it up
True and not only this but that would just make the motor out of time which would cause interference and bent valves but wouldnt lock it up really. It would bend valves enough to still rotate for the most part. I cant remember what started all this but you might be looking at hydrolock
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Old 10-08-2011, 05:08 PM   #10
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Quote:
Originally Posted by SonicBlueGT9963
Well u were definitely right black Gt The motor is locked up . Talked to a friend He thinks since I reused the tensioners that they lost oil pressure and it jumped timing Soo hopefully just some bent valves So now the fun begins lol
Well I'm sry to here that. Tensioner could be a possibility. I'm not certain of the design but some designs if set Improperly will not expand again. So you ready to pull the heads!!! and see the damage. You should post some pics when you pull them.
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Old 10-09-2011, 09:12 AM   #11
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Yes I will definitely take pics of whatever it is that's messed up in there. Right now it could be a zillion things I think my best bet is to just tear it apart and start looking for the cause of the problem . The car was at a complete idle when it shut off so it didn't make any crazy noises or anything . Just felt like I turned the key off One thing I do remember was when I re installed the chain tensioners I could compress both of them by hand which probably means they were probably pretty weak to begin with. Then again It might be something totally different that I haven't even thought of yet. I might go out later today and take the timing cover off and take a look,but I'll keep u guys posted so u don't ever make whatever mistake I did lol **** just got her runnin with the PI swap cams and long tubes it pulled real hard for not getting tuned yet lol
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Old 10-10-2011, 07:09 PM   #12
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Well I took the timing cover off , Everything looked normal accept for the drivers side timing chain was all chewed up on the side facing away from the motor Idk what could have caused this I'm inserting a picture of what the chain looks like Both cams will rotate without the timing chains on But the crank gear still will not spin Idk what could be holding it up I'm going to remove the heads tomorrow and inspect them But I'm still not quite sure what the main cause of this is Any ideas guys???
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Old 10-10-2011, 07:10 PM   #13
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Old 10-11-2011, 04:08 AM   #14
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The crank won't rotate at all? Try rotating the cams at different angles then turning the crank. Cause it won't turn by hand if the valves don't clear the pistons(timing being off)
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Old 10-11-2011, 09:57 AM   #15
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That's what I did , I turned both cams a bunch of different ways and the crank still wouldnt turn I'm gonna try pulling the heads today Just to at least check them , But I really don't know what else would stop the crank Maby a bent valve ?
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Old 10-11-2011, 10:15 AM   #16
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You didn't have any tapping or what not when you started it. I wouldn't have a clue why it wouldn't be turning the crank without bad valve clearance. Maybe it's seized
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Old 10-11-2011, 10:22 AM   #17
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Ya No noises whatsoever Not even when it happened, I'm slowly just gonna take the whole motor apart if I have to Checking the heads is kinda my last ditch effort to find the problem Otherwise I'm just gonna pull the motor and put together a new 2 or 4 valve Or something cool idk yet Just weighing out options here lol
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Old 10-11-2011, 01:40 PM   #18
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Silly question but have you checked the oil?
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Old 10-11-2011, 09:53 PM   #19
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Ya I checked the oil and it was fine No metal shavings or Anything crazy , no coolant mixed with it It looked completely normal And theres plenty in there
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Old 10-12-2011, 10:07 AM   #20
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Ok all the chain guides were all tight? And also be sure nothing is jammed on the sprocket. You probably have a valve that broke off and fell or jammed in the combustion chamber. So the cam will turn being that it's broke away from the valve or valves. The valve could be pinned between the head and the piston not allowing the crank to turn. Ya definitely pull the heads.
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Old 10-12-2011, 06:17 PM   #21
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Ya Im deffinately gonna pull the heads soon as I get some free time . Hope I didn't mess em up there brand new lol
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Old 10-28-2011, 12:56 AM   #22
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Well I pulled the heads and nothing was wrong so I just pulled the while motor out and started disassembling, What I found was that something was wearing on the timing chain guide and tons of plastic shavings fell down into the oil pan and were getting sucked into the oil pump, the filter got so clogged up that no oil was getting through and that caused the first rod bearing to burn up, So really all I need is a new crankshaft , rod bearings, and timing equipment. Needless to say .... Change out your f@$king Timing equipment when it starts getting old lol or Ull end up like me. Pics below
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Old 10-28-2011, 12:59 AM   #23
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Old 10-30-2011, 08:08 AM   #24
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Wow. That's pretty unexpected. Well at least your brand new heads are ok. So whats the story are you gonna get a new crankshaft and bearings? Theres also the option of having it machined. And while your at you could bore it over lol.
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Old 10-30-2011, 11:19 AM   #25
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Wow, that's crazy. Never seen anything like that before. Dont you have an oil pressure gauge in there? I'm sure tht didn't happen all at once...
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Old 10-31-2011, 01:16 PM   #26
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No it was probably wearing over time . And yes I want to upgrade . I was thinking about getting a stroker crankshaft. But I don't think it will work with the PI heads and the huge cams that are in it now. I might get clearance issues. I don't really know what to upgrade lol. Any suggestions.
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Old 10-31-2011, 07:57 PM   #27
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Yeah, but were you seeing low oil pressure? You must have... There is no way
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Old 11-01-2011, 02:02 AM   #28
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Re: Engine shut off and wont start Help plz?!?

Wow! That's some serious plastic in there! You may just have to go with a piston with more valve relief for the lift of the cam you have. I would contact one of the engine builders like Coast High Performance or someone and give them the specs of the cams and see what they say.
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Old 11-01-2011, 11:07 AM   #29
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Lol ya. It's funny what can happen to ur motor when oil doesn't get to it lol. But ya I'm thinking about just rebuilding it. Keep the higher compression and put like a 75 shot on it. I drove it around after the head, cam, longtube swap and man let me tell u , Talk about a noticeable difference , And that was without a tune , I'm definitely gonna port the heads while there off too. Want to pick up all that extra hp lol
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Old 11-02-2011, 10:14 AM   #30
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Sounds like this might be a good thing lol. Gonna add a little more punch!
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