First attempt startup troubles.

[silverkaturbo]

I've been researching on here for a long time for info to turbo my 91 ka24de now; here is my setup:

sr t25bottom mount ebay manisr 370'swalbro 255sr side mount i/c recirc valve and pipingand soon i'll be getting the emance tune. Well I've gotten everything installed and to the point where I'm trying to just get it started up, but the motor just cranks over and won't fire. I could smell fuel pretty bad so I pulled the plugs and they're all soaked. It seems to be getting way to much fuel to start so would this be a fpr issue or will i just not be able to even start it until I have the injectors under control with the tune? As of now im just running the stock fpr but I never had any issues running it with the walbro before the turbo installation. Any help would be great, thanks.

[ZiG]

You're trying to run 370cc injectors on a motor tuned for 270cc injectors.......?

[480sx]

You cant just slap bigger injectors in your car and expect it to run dude.. Put the 270's in, dont boost, and wait for your tune to come in before you install them again.

[silverkaturbo]

Im sorry, let me clarify even though you seem to have already given me the info i needed. The car is not drivable, it is far from it. Its not like i was expecting to just uh "slap" the injectors in and take her back out for a spin. Of course it would run extremely rich. Of course it would run extremely ****ty if it were to run at all. I just wanted to start it for maybe like one minute just to see if I had everything hooked up like it should be so i could address any mistakes as im waiting for the tune. The 370s were already in the rail and didn't want to swap them back out. My main goal here was confirming that the larger injectors were, in fact, large enough to completely drown the motor out to the point that the plugs cant even spark and that i don't have a different problem. Thanks for the responses guys.

[WDRacing]

The problem with running that rich is that all the fuel end up in the oil pan. This will lead to bearing failure very quickly. I suggest you change your oil before you attempt anymore starting/driving.

WD

[silverkaturbo]

Ok so I have the ecu tuned now and I still have this problem. Im not getting any spark and my ecu is throwing code 21, primary ignition circuit. I've looked over everything like 5 times to make sure everything is put back together and all, but I don't remember having to mess with anything that would cause this problem other than plug wires and yea, i remembered to put all of those back. It ran fine before I parked it for this project so there must be something i've missed. Any ideas? I doubt something just went bad while its been sitting there.

[NizzmoS13]

Ok so I have the ecu tuned now and I still have this problem. Im not getting any spark and my ecu is throwing code 21, primary ignition circuit. I've looked over everything like 5 times to make sure everything is put back together and all, but I don't remember having to mess with anything that would cause this problem other than plug wires and yea, i remembered to put all of those back. It ran fine before I parked it for this project so there must be something i've missed. Any ideas? I doubt something just went bad while its been sitting there.

Dont assume nothing is broke, you have to check everything to be sure. When I did a clutch change my clutch master went out during the install and the CM was only a month old, good thing I had a lifetime warranty. But you never know something could be bad, so check everything and make sure they work to rule that possibility out.

[zerepdivad]

Ok so I have the ecu tuned now and I still have this problem. Im not getting any spark and my ecu is throwing code 21, primary ignition circuit. I've looked over everything like 5 times to make sure everything is put back together and all, but I don't remember having to mess with anything that would cause this problem other than plug wires and yea, i remembered to put all of those back. It ran fine before I parked it for this project so there must be something i've missed. Any ideas? I doubt something just went bad while its been sitting there.

So you're not getting any spark at all from the coil itself? Have you tried swapping that out or ignition control module could have took a crap too. i'd say find a friend with those parts that you know are good and try it out.

regardless your car should have started with those 370's if everythign were ok. I've been having some issues on my ka-t with rev limitting at 5 gs and running extremely rich and fouling plugs etc since i got my ecu tune from emance *which jasons been very helpful with and has sent me a retune on it's way as we speak* and so to diagnose if it was the ecu or not i plugged in a stock ecu and i had 550cc injectors z32 mafs etc etc and ut fired right up and then i tried revving it to see if it'd rev past 5 grand and it did but obviously i didn't want to drive it with a stock ecu that'd be just retarded.

So basically yeah it should have still started with 370s as long as the rest of the car was still good but driving with 370s and no tune is just asking for trouble.

[silverkaturbo]

Ok I looked in the fsm and for code 21 it says to check the power transistor. Page 105 of Engine Fuel and Emissions Control Systems. It says to check for continuity between terminal b of the 2 pin ignition coil harness (green/black wire) and terminal i of the 3 pin power transistor harness (same green/black wire). That checked out ok. It also said to check continuity between that same point b and point d of the 4 pin condenser harness (a yellow/red wire on mine) and there is No continuity there. So I traced that wire all around back to the ecu harness and its ok. But there is a pin in the condenser harness with that green/black wire that does have continuity with the point b so im wondering if the fsm has a misprint? The yellow/red wire is ok all the way to the ecu harness so im starting to wonder if my ecu magically went bad. Maybe someone could also test those points for me and see what they get? Please?

[silverkaturbo]

So has anybody else had to do this test and came up with the same results??? This is driving me crazy.

[240sxvaj]

So has anybody else had to do this test and came up with the same results??? This is driving me crazy.

When i first did my t25 set-up on my ka24de i ran the car w/ stock injectors and it crapped out on me while driving it to dyno shop(planned to swapp to 450cc when got to dyno). So i decided to run the car w/ 450cc and it ran fine, was running pretty rich but not to the point were it was smoking like crazy. If you havent already replace your fpr then do so, mine crapped out on me and it smell like gas around the injectors, because the stock fpr wasnt made to handle the high pressure from the walbro. Make sure to get spark and after that make sure to change that fpr and see what happens.

[silverkaturbo]

Yea thats my main problem. I don't have spark, and I can't figure out why, so I can't even get to straightening out any forced induction issues that were expected to arise. It has to be something I did but didn't realize so Im about to just take it to a real mechanic and have a fresh pair of eyes take a look. I guess. Im just totally stumped and I'm finding the fsm to be questionable.

[racersonly2004]

it mite be ur coil to check it you can take it to ur local auto zone. also make sure ur geting voltage from the wires the plug to it, u can use a test lite if no voltage run a wire directly from the battery to the positive on the coil if u get spark u may have a burned fuse relay or wire if these two things are in order check for spark directly from the coil if u have it u may have a bad coil to distributer wire if not it may be a bad signal from distributor to coil rr distributoralso make sure ur firing order is correct