sr20det wont start cant figure out whats going on..help!

[blackmagic]

ok so i fixed my problem with it almost dieing when i press the gas it was a very large boost leak i hope unless it goesaway and comes back every once in awile. now i have another issue i can drive the car but i cant go into boost it wont let me it sputters and everything i have a turboxs mbc and its set to stock 7 or 8 lbs right now when i try to get into boost it goes up to boost but wont actually kick in im wondering if i have a bad waste gate acuator? sorry i cant spell. if not that what else when i realy get on it and try to boost it shoots out black smoke that would mean its running rich but how would it be running rich if im getting full boost? could there still be somthing wrong in the wiring or the ecu i dont want to try somone elses ecu and burn it up if my wiring is ****ed up. somone help. iv checked everything plugs are gaped to .28 and the coils seem fine i can get to 5500 rpm but only if im not in boost. and 5500rpm is when a bad coilpack looses its efficeincy.sorry again if i cant spell. i need help i realy just want to boost around town coming home every day seeing a fmic on a s14 makes me fell hot inside and i want to drive it. realy bad

[duffman1278]

How high did you boost withOUT the MBC?? Could possibly be a bad wastegate assuming you have no more boost leaks, well very minimal amount.

[blackmagic]

ok so i repaced the coolant temp sensor from my 95 ka coolant temp sensor to a 91 sentra ser one i had layin around and the car actually drives a little better but sime still not sure which sensor to use on my 91 redtop sr everyone is saying diffrent i cant get a straight answer theres people saying use stock ka sesnor from a ka24e motor people say use the ka24de sensor some say the 300zx sensor some say the sr20de sensor all i want to know is what sensor to use on my 91 sr redtop they are saying use diffrent ones for diffrent years but some people say dont. anyways now that im done with that i tryied to use just a straight vacume line from the hot pipe to the wastegate instead of the mbc and i didnt make any boost. when i try to use my mbc i can drive the car out of boost but as soon as i hit the gas the car bucks and backfires like crazy. i checked boost leak up to 20psi so i think im good on the boost leak part. also the turbo has a **** load of compressor surge even when the greddy bov opens at 2,000rpm.

[blackmagic]

did i mention im blowing black smoke when i realy get on the throttle and it backfires like a bat outa hell. i have looked at almost every damn thread from recent to arcived*sorry again about spelling wasnt my greatest subjects in school*

[blackmagic]

ok so just to let everyone that was interested in this thread i got the car running right it was timing again a buddy of mine looked at it and i did somthing wrong even though i set my timing exactly like the pictures show. so its running nice and pulling strong now i just need a tune.

[maj Andres]

good thread, i was at the edge of my seat

[blackmagic]

yeah that sr swap was crazy... now i have a thrown rod bearing. im trying to find another bottom end.

[duffman1278]

Yikes! That sucks. GL with that

[blackmagic]

yeah your tellin me if you know anyone selling a block for cheap let me know...

[Kalypso]

I have a block but its in new york

[blackmagic]

is it complete and whats the condition of it are you willing to ship if so about how much u think it will be from there to 32908 and how much for the block

[Kalypso]

its in queens nyc I dont want to ship, but I could.

its failry complete, maybe minus a intake mani. the head has a blown valve, so I got it for free with my car. but otherwise, its fine, I was going to save it, and dump money at it.

its been a while since ive seen it, im in ga on my way home when i get there I can look at it. and give you a price are you in a hurry?

[blackmagic]

im kinda in a hurry i want to get the motor in before i find another job. but yeh let me know

[cbb145]

my96 pathfinder did the same thing it was the coolant temp sensor,your tail pipe smell like paint thinner rich?mine was like 20 bucks or so

[blackmagic]

it wasnt just that. it was also 1 of the injector connectors was broken (wire starting to fall off) and the other reason was the coolant temp sensor was not wired correctly (my fault). but now im boostin past other sr's easy dont ask y cause other than running 15lbs of boost idk.