SR Startup Help
SR Startup Help
Alright just got a new battery and went to start my car but it wouldn't catch. When i first turned the key the first couple time, it kinda backfired (loud bang from the exhaust area). I guess that means im getting fuel. There is also exhaust coming out when i try to start the engine. How would i check for gas or how would i know if my timing is off?
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SpeedRacer1
- Posts: 3144
- Joined: Fri Jul 26, 2002 7:44 pm
- Car: 1990 240SX, G35
as i tried to start the car, the engine gave off an exhaust smoke that smelt like gas. almost the same smell of the spark plugs. does mean my engine may be flooded or something? i did try to start it like 10 times. if it is flooded what do i do the fix this problem? i heard i could let it sit for a little and it will be ok. is this true? Thanks for the help in advance. Truly appreciate it.
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SpeedRacer1
- Posts: 3144
- Joined: Fri Jul 26, 2002 7:44 pm
- Car: 1990 240SX, G35
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SpeedRacer1
- Posts: 3144
- Joined: Fri Jul 26, 2002 7:44 pm
- Car: 1990 240SX, G35
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AznRide
- Posts: 924
- Joined: Sun Nov 03, 2002 5:36 pm
- Car: Cars, hondas, import cars, girls, cars, girls, girls, and more beautiful girls.
I think it has to do with the injectors now. Too much fuel going in, which means the injector wires some where is touching or bad connection, or the injectors are stuck open. Happened to my old civic once. Kept dumping fuel in it when I dropped in the new motor, found out the wires were touching by the injectors, fixed it, ran good after that...it might help. Oh, I also have white smoke comming out of the exhaust, and fuel comming out of the exhaust because I wasted 1 gas tank driving 30 miles to my friend's shop. But everything cleanned up well after I fixed it, wish you the best
o.k. to fix the flooded engine: pull the fuel pump fues (under hood) and give it 2 or 3 good 10 sec starts.... if you messed around with your injectors or fuel rail, you HAVE to replace the o-rings top and bottom around the injectors.... i have never seen one reused with good results.... don't waste your time 'trying to start it" while someone messes with the cas.... just take off the valve cover and follow the instructions to set your timing correctly.... you can double check that your first cylinder is at top dead center by looking down the spark plug hole, you can see the cylinder come up at you when you rotate the crank manually... good luck, sounds like a 10 min timing job will fix you right up...
alright i tried adjusting the CAS but that didn't work. At 15 degrees it still wants to catch but doesn't. I tried moving the CAS a little and It almost caught (RPM kinda rose). Is the timing still off? Im pretty sure the injectors are ok b/c i didnt fiddle with them during the swap. Could a flooded engine prevent starting? I think this is the case b/c i smell gas when i take off the valve cover and from the exhaust.
double check your ignitor wiring too.... and if you want to make sure it's not flooded when you go to start it, remove that fuel pump fuse and give it a couple of cranks, then put it back and try again.... beware.... as i said before if you do this repeatedly, you better check your oil for gasoline......
if you're getting all 4 sparks, i think that you're fine, it's really those coil packs that send the charge to the spark plug, the ignitor just sends the signal to the coil packs..... sounds like your timing.... the instructions on the net may seem daunting, but as soon as you do it, you'll see it's very very easy
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SpeedRacer1
- Posts: 3144
- Joined: Fri Jul 26, 2002 7:44 pm
- Car: 1990 240SX, G35
If your getting spark on all four then your CAS timing is just way off. Lets say the pistons should be getting ignition in 1-2-3-4 order, you would obviously want your timing to be at 1-2-3-4. But it is possible, even if you follow how the manual tells you to set timing, that the firing may be 180 degrees off like 3-4-1-2, which would obviously seem like its set right, but in fact be doing nothing.
Other things that suck for multiple starts: As stated before, you can flood the engine thus it will not start again until its dry enough. This sucks if it doesnt start within the first few tries because it means you have to wait or remove the plugs and dry them. The other problem is battery voltage, simply put if you drain the battery anything in the low 12 volt area its not electrically strong enough to start the car anymore with the charge in the system at basically nothing (since the alternater hasnt had a chance to charge anything) thus you may need to have a car jump starting while you try to start.
Have one person cranking, while the other turns the CAS slowly. The way the CAS works is that it has a metal disc that turns. The disc has 360 holes etched into the metal. A laser shoots through each hole and when it gets a certain number of holes it reports to the ECU to fire off a plug. Since the car is in start mode when you are starting, fuel is shot into all four cylinders at once, as opposed to one cylinder at a time during regular driving. This is the reason why if you arent getting it to ignite fast you flood the engine, since its recieving four times as much fuel as regular driving.
Other things that suck for multiple starts: As stated before, you can flood the engine thus it will not start again until its dry enough. This sucks if it doesnt start within the first few tries because it means you have to wait or remove the plugs and dry them. The other problem is battery voltage, simply put if you drain the battery anything in the low 12 volt area its not electrically strong enough to start the car anymore with the charge in the system at basically nothing (since the alternater hasnt had a chance to charge anything) thus you may need to have a car jump starting while you try to start.
Have one person cranking, while the other turns the CAS slowly. The way the CAS works is that it has a metal disc that turns. The disc has 360 holes etched into the metal. A laser shoots through each hole and when it gets a certain number of holes it reports to the ECU to fire off a plug. Since the car is in start mode when you are starting, fuel is shot into all four cylinders at once, as opposed to one cylinder at a time during regular driving. This is the reason why if you arent getting it to ignite fast you flood the engine, since its recieving four times as much fuel as regular driving.
SHE STARTED!!!! Thanks to everyone who helped me especially loudbay and SpeedRacer1. The problem was my wiring to the ignitor was off(i did the wiring). The wires were mismatched- red/blue to red/green, red/white to red/ yellow. I must've been really tired or the lighting was bad or something b/c that was a stupid mistake. After i fixed that problem i re-did the timing and all and. Then she fired up instantly. Man it was a good feeling. The only major service i ever did on a car was my alternator. Now i can sucessfully sayi completed an engine swap all by myself and with the help of the ppl on the forums. Thanks guys, your help is truly appreciated.
