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Engine Tech Technical discussion related to all relevant engines such as KA, SR, RB, CA, 2JZ , L24/26/28, VG, VQ, and LSx series. |
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03-28-2013, 05:26 PM | #1 |
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SR Cranks but wont start. Timing perfect.
Hey guys, So backstory...I swapped in my redtop into my s14 about 3 weeks ago and everything is stock. I also have a WS harness. It was running fantastic and then the heater hose popped off and I blew my head gasket. I ordered a cosworth metal headgasket with ARPs and torqued down to 90. Got everything back together including timing set right. (intake at 10, exhaust at 12, cas lined up and center, crank second from left). I go to start it and all it does is turn over. No sputter or anything. I can smell gas, and if I take the plugs out there is gas on them. I unplugged the injectors and cranked to dry out the cylinders. Waited a while and tried again with maf unplugged and all sorts of variations...nothin. So what else could it be? Ignitor maybe? Please help me out as this DD. I searched all damn day and found not much of real relevance to my specific situation. I have pics of my timing set up if you tell me its wrong. Thanks guys.
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03-28-2013, 05:30 PM | #2 |
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This might be a dumb question but is your motor grounded to your chassis? I had this same problem ( I relocated my battery and didnt run a ground from the engine to the chassis), and My car smelled strongly of gas.
You may have also flooded your motor. |
03-28-2013, 05:45 PM | #3 |
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thanks for the reply. Yes, i have 4 total grounds. 1 from the Intake mani to the firewall, one from the coil packs to firewall, one from head right behind the exhaust mani to wheel well/chassis, and finally the fusebox one for the harness.
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03-29-2013, 08:24 AM | #5 |
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So I know it might matter but then agian idk. The chain may have fallen off the crank when I was trying to put a new belt on so I pulled it tight to get it back on. I know it may have moved but that wouldnt make a difference as long as the cams are in the right spot right? So if I have the crank lined up, and all the slack is in between the INTAKE and CRANK right where the CHAIN TENSIONER is then the cams are lined up and cas punched right I should be good right?.
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03-29-2013, 10:32 AM | #7 |
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ground the plugs out and check for spark? do you have the right amount of links in between the cam marks (or whatever the marker point is supposed to be)?
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03-29-2013, 11:14 AM | #9 |
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Yep just did the coil and plugs on the valve cover test, I had spark on all 4. I know its getting fuel because it was before and I havent messed with anything, I can smell gas and I can see it in the cylinders. My maf was good before my head gasket change and it didnt move so thats fine. My ignitor works since Im getting spark. I has to be timing but everything is where its supposed to be
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03-29-2013, 11:37 AM | #11 |
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Well do you have Conzult? turn the ignition on, set the crank manually to 0TDC, then hook up conzult and see if it reads 0 also. If its different then maybe the CAS if off a tooth. Only other thing that i can think of to trouble shoot
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03-29-2013, 12:16 PM | #13 |
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I think you might have a flooding problem.....Check ECU's grounding........But, be sure that you connect all the connectors into the right position.....Another thing is to check the CAS because it tells the ECU what degree the timing you are at, which relates to the fuel trim.......According to what you told, the ignition seems okay.......As I said, be sure that you have plugged in all the connectors/sensors securely......Also, be sure you plug in MAF when starting the car......
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03-29-2013, 12:26 PM | #14 |
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Yeah man, you probably skipped or overlooked something upon reassembly. Its easy to do especially since you had to pull the head off. Grounds or connectors need to be reevaluated
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03-29-2013, 12:46 PM | #15 |
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Just went out and looked over everything...still nothing. I really dont want to pay someone to do my timing...it would be bs and shameful lol. I am honestly out of ideas. Just cranks and cranks. I smell fuel and i know the plugs are sparking. FML
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03-29-2013, 12:57 PM | #16 |
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if you have fuel air and spark, theres a good chance its a mechanical timing issue. to make sure, do the one thing nobody mentioned. check the ignition timing with a timing light/gun. also does the engine sound like it has good or bad compression? you may be off a tooth or so..
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03-29-2013, 01:02 PM | #17 |
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I cant check it with a light if it doest start....i dont have a compression tester but I just put in a cosworth 1.8mm gasket with arp's at 90ft lbs. i also got the head cleaned and decked but that doesnt explain anything
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03-29-2013, 01:12 PM | #18 |
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It's not because you have spark with the spark plugs off that they do fire when bolted in the head.
I know it's may sound stupid, but with the pressure inside the cylinder as well as the air/fuel mixture it's more difficult for the spark to happen. It did happen to me and I did change the 4 plugs and it fired right away. I'm not saying that this is your problem, but it's a cheap and easy thing to change. Frank
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03-29-2013, 01:28 PM | #19 |
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Hold the boat a minute,
Did you replace the spark plugs with new ones after the blown HG?
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03-29-2013, 02:14 PM | #20 | |
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Friends SR used to do this. His car would flood and we'd pull out the fuel pump fuse and crank it till it started, then put the fuse back in. Try that yet?
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03-29-2013, 04:29 PM | #23 | |
It's Always Broken.
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If you pull out your spark plugs and crank the engine does it shoot out fuel like a whale? Lol. Sure way to know if it's flooded.
I still think your timing is off. Hopefully nothing is damaged if the timing was off.
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03-29-2013, 04:38 PM | #24 |
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I hope so too but I dont know what could be off timing wise. Everything is where it should be according to FSM. i took out my CAS and turned it by hand, all 4 injectors clicked
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03-29-2013, 04:41 PM | #25 | |
It's Always Broken.
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Post a video of it and show us how it sounds while cranking and we can immediately tell you just by sound if your mechanical timing is off.
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03-29-2013, 07:01 PM | #27 | |
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It doesn't sound like it even has that much compression in that video...
Hopefully you didn't get your timing wrong in the first place and bend a valve or put a hole in a piston lol
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03-29-2013, 07:13 PM | #28 |
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Most of the time that the car won't start, I would look at battery, fuel and spark.....But, it seems that you have done all.....
Now you may want to look into your mechanical work you have done......If the car start before the head gasket failure, it should be started now......I am sure no electrical components would failed by the time you have done your head gasket thing....... Check your timing as if you are out of timing, it won't start anyways...... Lastly, do the compression test.....It will tell you many of things.....One important thing is will will tell how you that the valves are leaking or not, which will also lead to your camshaft/timing setup on your system......
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Parts dismantler.... Last edited by Kriskouki; 03-29-2013 at 11:34 PM.. |
03-29-2013, 08:09 PM | #29 |
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your mechanical timing is off, check it again. then check with a timing light. you cant cheat the system.
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03-30-2013, 08:08 AM | #30 |
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So I have checked it and checked it and checked it again. I have my intake at 10 my exhaust at 12 (A little past) and there are 11 links from the first dot to the second. The crank is at 2nd from let (13 btdc) and I lined up the CAs with the right dot so when I push it in it goes to the left dot and lines up. After centering and bolting it in, I crank and still nothing. GETTING FUEL AND SPARK! Should I try taking off my gears and everything again? THIS SUCKS! Its my DD and monday is rolling around fast. Thanks errrbody.
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