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Blown motor?

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Old Sep 3, 2019 | 02:00 PM
  #1  
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MtmG37
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Blown motor?

Ok so a couple months back. My car was driving pretty good, torque converter was ready to go, it was rattling and slipping like crazy. I was driving it risky asf and long story short I kinda abused it while it was messed up. I pulled in somewhere to eat and as I was parking the car stalled on me. (Auto). And when I tried turning it was no good. I’ve been trying to diagnose since but it’s impossible. I replaced starter, new trans oil, new motor oil, new sparks, new battery, new starter. When I try to start the car. I can hear the starter engage, but it spins slowly and the car doesn’t crank. I’ve checked fuel pump, injectors, fuel pressure, spark, starter, battery, all the connections on the trans and can’t get it to even crank. Car was running on around 4.5ish quarts of oil. And the motor was running great imo. So before I go ahead and disassemble the block looking for the issue, maybe I’m missing something to check?

before anyone asks I haven’t checked compression (I know I should) but I can’t really get to an auto parts to borrow a set and know no one with one. But the motor is fairly good mileage 82k so idk if to expect that.

Any thoughts or suggestions are greatly appreciated I need my baby back 😓
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Old Sep 3, 2019 | 08:56 PM
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Consult a real makanic. Obviously 82k mileage motor dont just blow cuz of a tq converter. Nobody here knows your situation we just gonna guess. I'd probably find a real mechanic before tearing into a motor without even diagnosing the no start condition. Plenty of motors crank blown.
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Old Sep 3, 2019 | 09:13 PM
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From the sounds of it you haven't done any real diagnosis, just threw parts at it and now assume the worst. If it cranks slowly chances are it is not blown. There is another electrical issue going on and you are just going to have to do a proper diagnosis before you go wasting any more money on parts you don't need.
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Old Sep 3, 2019 | 11:30 PM
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Originally Posted by stealthee
From the sounds of it you haven't done any real diagnosis, just threw parts at it and now assume the worst. If it cranks slowly chances are it is not blown. There is another electrical issue going on and you are just going to have to do a proper diagnosis before you go wasting any more money on parts you don't need.
I wrote that post in a bit of a rush I agree. But diagnosis have been thorough. Started at the battery took it in to get charged (as it died from to many attempts). Battery read good, 12.7v drops to 12.3 upon starting. Getting the same readings on the starter itself with a multimeter. Starter was fairly new as it was a oem replacement from another time. Checked ign fuses and replaced them as I had a couple new ones laying around. Removed spark plugs to test and confirm spark, pass on all 6. Fuel pressure tested, fuel pump was also checked for possible kinks or anything loose (aftermarket pump). Both good
Motor spins freely, had no shavings in my oil. I’m aware a blown motor seems a bit out of reach but it’s not the first time I’ve blown a vq out of nowhere so it wouldn’t surprise me, just not trying to go down that road again. I’m currently leaning towards something electrical. But I have no idea where to even start. I agree a mechanic might be the best bet, but I can’t afford rn to tow my car and have it diagnosed. So I want to try everything I can before I have to suck it up. I’ll try to upload a video tomorrow morning on how it looks and sounds trying to start. See if anyone can chime in with personal experience maybe. Or Atleast some sort of general direction to point me in. I know one persons issues don’t mean it’s the same on another, but possibilities are possibilities
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Old Sep 4, 2019 | 08:47 AM
  #5  
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Originally Posted by MtmG37
Ok so a couple months back. My car was driving pretty good, torque converter was ready to go, it was rattling and slipping like crazy. I was driving it risky asf and long story short I kinda abused it while it was messed up. I pulled in somewhere to eat and as I was parking the car stalled on me. (Auto). And when I tried turning it was no good. I’ve been trying to diagnose since but it’s impossible. I replaced starter, new trans oil, new motor oil, new sparks, new battery, new starter. When I try to start the car. I can hear the starter engage, but it spins slowly and the car doesn’t crank. I’ve checked fuel pump, injectors, fuel pressure, spark, starter, battery, all the connections on the trans and can’t get it to even crank. Car was running on around 4.5ish quarts of oil. And the motor was running great imo. So before I go ahead and disassemble the block looking for the issue, maybe I’m missing something to check?

before anyone asks I haven’t checked compression (I know I should) but I can’t really get to an auto parts to borrow a set and know no one with one. But the motor is fairly good mileage 82k so idk if to expect that.

Any thoughts or suggestions are greatly appreciated I need my baby back 😓
Why are you just guessing and throwing parts at your vehicle instead of paying an Infiniti dealer a one hour diagnostic fee to tell you exactly the root cause why your vehicle is not starting?
AAA provides a free tow

Or if you end up replacing all the parts of your vehicle AAA will be still waiting for your call
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Old Sep 4, 2019 | 11:20 AM
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AAA only provides a free tow if you're a member. You can't just be a basic member because if you're a basic member the only tow you two miles.
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Old Sep 4, 2019 | 04:34 PM
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Might be far fetched, but could your tq converter be preventing the motor from spinning fast enough? You did say it was on its way out, maybe it finally gave up the ghost and the internal clutch could be stuck together. Upload a video and maybe we can get a better idea.
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Old Sep 4, 2019 | 05:47 PM
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Originally Posted by Conboss
Might be far fetched, but could your tq converter be preventing the motor from spinning fast enough? You did say it was on its way out, maybe it finally gave up the ghost and the internal clutch could be stuck together. Upload a video and maybe we can get a better idea.
i replaced the torque converter, and i need to get the battery recharged from all the starting attempts.
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Old Sep 4, 2019 | 05:53 PM
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MtmG37
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Originally Posted by telcoman
Why are you just guessing and throwing parts at your vehicle instead of paying an Infiniti dealer a one hour diagnostic fee to tell you exactly the root cause why your vehicle is not starting?
AAA provides a free tow

Or if you end up replacing all the parts of your vehicle AAA will be still waiting for your call
currently parts are the easiest for me to access over money. between tow truck and infinitis diagnostic fee im looking at a pretty hefty price. plus ive contacted the two nearest infinitis and i was told over the phone they would not work on my car because of all the aftermarket parts on it.
I dont have AAA and as someone else said theyd only take me 2 miles while the nearest infiniti dealer is close to 20 miles.
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Old Sep 5, 2019 | 07:55 PM
  #10  
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Originally Posted by MtmG37
I wrote that post in a bit of a rush I agree. But diagnosis have been thorough. Started at the battery took it in to get charged (as it died from to many attempts). Battery read good, 12.7v drops to 12.3 upon starting. Getting the same readings on the starter itself with a multimeter. Starter was fairly new as it was a oem replacement from another time. Checked ign fuses and replaced them as I had a couple new ones laying around. Removed spark plugs to test and confirm spark, pass on all 6. Fuel pressure tested, fuel pump was also checked for possible kinks or anything loose (aftermarket pump). Both good
Motor spins freely, had no shavings in my oil. I’m aware a blown motor seems a bit out of reach but it’s not the first time I’ve blown a vq out of nowhere so it wouldn’t surprise me, just not trying to go down that road again. I’m currently leaning towards something electrical. But I have no idea where to even start. I agree a mechanic might be the best bet, but I can’t afford rn to tow my car and have it diagnosed. So I want to try everything I can before I have to suck it up. I’ll try to upload a video tomorrow morning on how it looks and sounds trying to start. See if anyone can chime in with personal experience maybe. Or Atleast some sort of general direction to point me in. I know one persons issues don’t mean it’s the same on another, but possibilities are possibilities
So I was checking out some more fuses, looks like I burned a couple so I replaced them.. before I wasn’t getting any cranking sounds this is the most amount of noise I’ve heard since it’s been down
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Last edited by MtmG37; Sep 5, 2019 at 08:00 PM.
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Old Sep 14, 2019 | 09:00 PM
  #11  
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Sounds like the timing is off. Do you smell any raw fuel after cranking?
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Old Sep 16, 2019 | 03:36 PM
  #12  
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If you can't afford to take your car to a mechanic to just diagnose it, then you're SOL.
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