1993 j30t won't start

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jspecj30t
Posts: 11
Joined: Sun Aug 20, 2006 6:01 pm
Car: 1993 infiniti j30t

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My car has about 130,000 miles on it this is the first time this has happened. After a 5 hr drive on saturday afternoon i tried to start my car that evening it did start but the rpm's just dropped and the car died. i tried again and it would not start. The car will shake as if it was going to start but won't stay on. i tried again the next morning and noticed a strong odor of gas in the engine bay. I found a small leak of gas leaking from the hose on the fuel damper which is on the passanger side above coil pack #5. so gas did leak onto that. i replaced the hose so the that is fixed. i tried to start the car again but it won't start. a few hours later I try again i hear a clicking noise as if the battery was dead but its not. lights,radio etc all work. I tried again about 5 mins later and the car will shake as if it was goona start. THATS MY PROBLEM i've changed out the fuel pump and fuel filter,spark plugs, and belts at 127K when i purchased the car. All the items have been replaced with OEM parts. I changed the oil out a week ago along with the fuel filter. i also cleaned out the MAF sensor and throttle bodies out before my trip. the car was running good before all this and ran good until it died.

http://300zx.co.uk/cgi-bin/man...l=190


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yodawill2000
Posts: 3888
Joined: Thu Mar 24, 2005 4:10 pm
Car: 94 Infiniti J30
Location: Grand Prairie TEXAS

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Change the Timing belt as well ?

littlewillie
Posts: 179
Joined: Wed Aug 03, 2005 12:07 pm

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Modified by littlewillie at 12:05 AM 12/24/2007

DominickJ30
Posts: 856
Joined: Tue Jan 18, 2005 8:10 pm
Car: 1993 Infiniti J30t

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You flooded the engine.

Simply take out the fuel injector fuse and start the car.

This will clear the cylinders and the car should die, then reinstall the injector fuse and you are good.

jspecj30t
Posts: 11
Joined: Sun Aug 20, 2006 6:01 pm
Car: 1993 infiniti j30t

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all the belts were change at 127k when i aquired the car. I will try all the suggestion this weekend. the car broke down in the woods about 5 hrs from my home. i will let all of u know what the outcome is. If there are any other suggestion please reply. i will try anything to start it. thx

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95-J30tt
Posts: 463
Joined: Tue May 02, 2006 5:46 am
Car: 95 Infiniti J30tt (Twin Turbo)

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if you get it started and you find out the problem to be that you have flooded your pistons, dont drive the car, change the oil first, because if the pistons are flooded, then i'm sure that you got fuel mixed in with your engine oil (it is normal, and not unusual), that thins out the oil, and it would cause a major issue.... take out the dipstick, and check for fuel smell, if the smell is strong, then change your oil before proceeding further..... i can imagine that the car is not at a garage, so just unbolt the oil drain plug (14mm socket) and let the oil drain..... then tighten the bolt, then just fill the oil back up to level, no need for a filter change (temporarely, but change the oil again and filter when you get back home).....

i would really suspect your fuel injectors, take a multimeter with you and see (with the ignition off), does any of your injectors give out a reading? (it would read around 14 if it is on), if so then it is one of your injectors, that is known to happen a lot with the vg30de and tt engines.... just unplug the fuse (as DominickJ30 said) and let the car run (it will run for about 5 seconds before it dies), then plug the fuse back and start it.......

if that doesnt work, then try this, take a phillips screw driver with you, unscrew the one fuel hose (the one that is coming from your fuel filter, and make sure you put a rag under it as it will leak out fuel, about 100mL or so), that will depressurize the fuel system, now put your ignition to the on position, you should hear a sound from the fuel pump that would stop after about 2-3 seconds....... if that sound keeps going, then depressurize the fuel system angain, and start your engine right up (dont give the fuel pump time to flood your pistons)...... if this is the situation, then i suggest that you take it to a garage asap, it could be your fuel pump relay messing up

if that doesnt work, then try this, get a spark plug socket, and remove all spark plugs (well you dont have to remove them all, i know the two in the rear of the engine are really a pain to get to....), and wait for about 10 minutes, observe the spark plug holes, is there any noise or fresh fuel coming into any of them (if there is, then it is the injector that is feeding that cylinder that is preventing the engine from turning), in that case, remove that injector's connection plug and start the car then plug it back in (the engine would run rough untill you plug the injector connection back it)........

and finally, if all that fails, unplug the fuel pressure regulator's vacuum hose and wait a little, then plug it back in, if you can start the car afterwards, then it would be that one of your vacuum lines that is not tight or disconnected....

the above steps are not a perminant solution, and are only to diagnose the fuel system.......... this is just to get you home, after you get the car home, take it to a garage and get it checked, fuel problem is not fun, and could cause a fire or even worst...... in either case, once you get home, unplug the injectors and fuel pump fueses untill the car cools down, then plug them back in for further diagnoses.......

other issues that might cause the engine to not start

the intake hoses are not properly tightened, or MAF is not reading correctly

vacuum lines that could be out of place or not tight

i know this one might sound odd, but it could be that your fuel meter is not reading right..........

spark plugs are failing

i hope this helps, good luck, i've been in your shoes once before............

jspecj30t
Posts: 11
Joined: Sun Aug 20, 2006 6:01 pm
Car: 1993 infiniti j30t

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I finally got my car running again. The fluid level in the battery was really low. I had my battery recharged and now its running good. I just got back from my 5 hour trip from the the woods where the car broke down.. thanks to every one for there help and suggestions. i tried all of them but i should have check the battery levels really good. THIS SITE F-ING ROCKS....

pugstrip
Posts: 16
Joined: Mon Jan 08, 2007 3:39 am
Car: 95 j30 infinity

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hi im putting a eng/trans out of a 95 into my 94 do i have to change the ecm?


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