J30 IS ALIVE BUT NEW QUESTION A RISE

[infinitidreams20]

OKAY TURN OUT THE CAR JUST FLOODED THANK GOD COULD OF BEEN A HECK OF A LOT WORSE BUT NOW I HAVE A NEW THOUGHT WHY DID IT FLOOD ITS PROBLEY JUST ME BUT I THOUGHT THATS ONEOF THE IMPROVMENTS WITH (EFI) IS THAT IT DOESENT FLOOD SO I GUESS ANY IDEAS ON WHY THANKS DOMINICKJ30 FOR THE SAVE

[metaverse3]

It is a factory problem..seems to be dominant on the 93's.. Possibly ECU or injector related.. you are not the first to complain of this.. .seems to be a known issue that does not immediately reoccur or might never reoccur in the lifetime of the car. My doubt is injector related since the JEGS injectors of the early 90's on nissan/infiniti's were plain garbage...could just be holding the coil open longer and a quick dribble down cylinder walls to flood at next start. I have not had it happen on my 93J30T..only a matter of time I would say.

[infinitidreams20]

i wounder, if the injectors were working properly then the gas should be adequately atomize and shouldn't just have a dribble but i would have to say may be one or more is getting stuck that one time open and dribbled out while sitting hmmmmmm im going on the hunt to find out

[Jesda]

I cant understand what you just said, my friend.

[infinitidreams20]

sorry thats what i get for thinking to my self and typing i was thinking if the fuel injectors were working properly then there shouldnt be any dribbling of fuel in the cylinder

but on the other hand if one or so injectors aren't closing all the way then maybe it is alowing gas to dibble while sitting

hope thats better

[metaverse3]

I cant understand what you just said, my friend.

Lol.. He is talking about fluid dynamics and atomization..

Atomization applies when it is an open environment.. Inside a cylinder block is a different story. It will still happen..just very little or at a lower rate. You got the gist of it when you stated the injector was stuck open...correct. Analogous to a dripping faucet vs one turned on full blast.. Injectors are coils with electromagnetic theories in full force.. coil energized..open..spit fuel. Then coil de-energized..close..starve fuel. To complicate things, nissan's don't have pintles on their injectors.. Think of a pintle as your shower tub drain hole where you pull the lever to fill the tub the stopper goes down and release it to drain the tub, stopper goes up. Nissan's are gated..(have not seen an injector split open though) At least that is what I have been told. When these old jegs injectors go, they either lose coil control, or gate control.. new bosch injectors are a re-inforced design of coils and gates and they usually never die again. When the engine floods..you basically have a diarrhea (don't even picture it) of the fuel system.. So..there you go..

[metaverse3]

sorry thats what i get for thinking to my self and typing i was thinking if the fuel injectors were working properly then there shouldnt be any dribbling of fuel in the cylinder

but on the other hand if one or so injectors aren't closing all the way then maybe it is alowing gas to dibble while sitting

hope thats better

Yes..you are correct...However, this is the part where I suspect either a glitch in the ECU programming (buffers anyone?) or bad sensor readings from temp sensor (coolant) or the damn thing just thinks you are going above to below sea level and trying to change it's programming to relate. I have read so many J30 flooding issues, especially after 60k, it is almost clockwork.. To make things complicated, there is only 5 years of model run and very little info other than the fact it shares a lot of its guts with the 300zx..yet it is a completely different animal.. (hicas, transmission ecu, ECCS,gearing etc)

[infinitidreams20]

interesting thanks for the info im always open to new information i will still go forth into trying to figure out the problem because i dont like the fact that it did that anyways

[infinitidreams20]

Yes..you are correct...However, this is the part where I suspect either a glitch in the ECU programming (buffers anyone?) or bad sensor readings from temp sensor (coolant) (hicas, transmission ecu, ECCS,gearing etc)

if it is a bad sensor reading is there a way to test it

[DominickJ30]

No problem dude, and I have to agree with metraverse on the ECU issue. You should call the dealer and see if there is any updates for the 93 j30 ECU and have them reflash it.

[metaverse3]

if it is a bad sensor reading is there a way to test it

Yes..using DMM or just replace it..cheap..$20-30 methinks..go OEM..

You asked..attached image..

BTW...the best test is a handheld computer..snap-on..consult..monitor temp while on a roadtest along with a fan relay test..