ok this is my last ditch effort before i send the car off to someone and have them fix it. ill try to explain everything as well as possible.

i purchased this car with haltech e6k and a new motor (maybe 5 miles on it) it ran great. then things have been going down hill till now(1k miles). i put it up for the winter and now im going back to trying to figure out the problem. j-rat sent me a stock map to try out since the map i had, had been tweaked and "tuned" by everyone and their grandma. so i thought a fresh base line would be a good place to start so i loaded that map and timed it. it is dumping fuel into the motor. i changed out the injectors thinking one may be stuck. i emailed j-rat my map and he said to take out some water temp correction fuel. it was at 32% on the cell that it was trying to start at. so i zeroed that out but it was too flooded to start so last night i changed the spark plugs and pull started it. it finally fired up but still running on one rotor and tons and tons of smoke out the exhaust. im pretty sure its fuel, doesnt smell like coolant and doesnt look like oil. i let it idle for a few minutes thinking it might clear up after all the fuel got out of the motor but no go. so frustrated i shut it down and now im asking for any kind of help before i pay someone to fix something possibly really simple that we might have missed.

also i was thinking it was possibly a coil issue. i did the plug wire screw driver test on all plug wires and they all seemed weak. i put my multi meter on the leading coil and it read out 1.47ohms. i was told it should be under 1ohm but was also told it will either be good or bad, no in between so my coil is good(not sure how i feel about that).

im sure i missed a bunch of detals but i will answer any questions as best as i can.

 

Try new plugs first.

During a few first rough (fat) starts I've completely fouled brand new stock plugs. Couldn't figure out why it was running on one rotor even after I had it tuned up much better.

Threw new plugs in, ran like a charm.

Good place to start anyways, before getting too in depth.

 

ok ill go grab another pair of new plugs. im running all bur9eqs too.

also i have a fuel cut off switch. with the switch off it cranks fast but with the switch on it cranks a lot slower and even hangs now and then. i was thinking that was just the fuel getting caught up in the motor and sort of hydro-locking it.

 

Hmm, check this thread out, and post back if you're having the same symptoms during cranking. There could be a number of problems.

https://www.rx7club.com/haltech-forum-62/when-cranking-turns-over-stops-then-starts-o-o-804490/

 

not really. i guess its similar but it seems more like flooding out than not enough fuel. if it cranks slow then it cranks too slow to start. it never kicks and goes like tweaks. ill shut off the other maps and see if that helps me

 

My 88 TII with an E6X was running on one rotor. It pissed me off to no end. What I found in the end was that one of the wires in the clip for a primary injector had backed out, causing the injector to not fire. This happened after I had been in, monkeying around with my intake, etc. Might be something you want to check, seeing as you have changed the injectors.

 

yeah ill look into that. but the problem is the reason i pulled the injectors in the first place. but yeah ill def look at it. thanks for the tip

 

I think that poor thing is just drenched in fuel now.. I have seen it before. Takes a WHILE to clear out that fuel ESPECIALLY with a new motor.

 

check for injector wires grounding out causing injector to stay open and flood engine.

 

ok so some good news. i tinkered with it all weekend and made some pretty good progress. friday i sent my injectors off to get cleaned and tested. re installed them sat. i looked for and jiggled every wire i could find and they all seemed ok/tight. i replaced my leading coil. i reloaded the stock base fuel map j-rat sent me since i took tons of fuel out of the one i was messing with and wanted a clean slate. turned the key on. let the pump prime and after a few revolutions it fired on its own. it still sounds really off though. still like its only running on one rotor but a lot smoother. since it wasnt puking smoke or doing anything funky besides that, i let it idle for a few minutes and get up to temp to see if that would change anything. it got to 190* and my fan kicked on and it held steady. steady oil press and oil temp. looking at my wideband it was idling at 11.7afr. took some fuel out and it didnt really make it run any different so i shut it down and called it a night.

how would i check for a spun bearing? there are no metal shavings on my dipstick but something really seems wrong with the engine itself since it was running fine for the first 1k. anyway im rambling now. i hope its ok and thanks to everyone thats been helping me out

 

what do the plugs looks like?

Compression test?

 

the plugs are a little sooty. 80psi on all faces front rotor 70psi all faces rear rotor.

 

did you try fresh ones?

 

yeah i put those in when i put in the injectors. i havent pulled them to see what they look like though.

 

just trying to rule more stuff out. my buddy jake used to work at rx7store said it kind of sounded like a spun bearing and he has felt the shaking through the clutch pedal so i went home and started it and with the pedal completely disengaged i dont feel anything. fully engaged i dont feel anything. anywhere in the throw though and i can feel it shake through the pedal. so armed with a few milk jugs and a pair of the girls nylons i drained and filtered the oil to look for metal debris. nothing came up so..

do you think thats enough to rule out spun bearing, or should i drop the oil pan? or do you guys truly feel its something with the electrical/tune?

thanks again

 

It could be any number of things, but firstly I'd try tuning it up a bit. Idling in the 11's a car never really sounds healthy.....

 

ok guys i just wanted to do a quick update. i took the car to a pretty well known tuner to see what he can uncover. turns out the motor was built wrong and out of balance. i put a new motor in this weekend and it runs amazing. just like it should. i just wanted to thank everyone for their help and i think my haltech is bullet proof now har har.