View Full Version : Can't start SR. Got Fuel - got backfire? - HELP!
2plus4plus0eq6
06-18-2012, 05:59 PM
Hey there I am just in the middle of trying to get my engine to start. I have been getting some popping noises here and there which I think is backfire. The engine has sat for about 3-4 years since I put the s14 SR into my s13.
I took one of the spark plugs out which was perfectly clean before and now it is black and has fuel on it.
I am not sure If I am flooding the engine, how to unflood it if I am, what start up procedures do I take, etc.
The engine did start for me 4 years ago. It was rough but it did run. I put in octane boost and about 10 liters of 94 octane fuel into the tank. I am not sure if its not going because of old fuel in the lines or what.
any help is appreciated. I have already searched tons for info!! I need help now!!
PureRush
06-18-2012, 06:51 PM
My ka did the same. My cylinder #1 spark plug was soaked in gas and black from oil. The rest were just soaked in gas. Take out the fuel pump fuse and crank the engine. It should start and run until the excess gas is burned then will die. But before make sure you clean the spark plugs so they will spark. *EDIT* I think you should just buy new spark plugs. Why not lol :)
2plus4plus0eq6
06-18-2012, 07:22 PM
My ka did the same. My cylinder #1 spark plug was soaked in gas and black from oil. The rest were just soaked in gas. Take out the fuel pump fuse and crank the engine. It should start and run until the excess gas is burned then will die. But before make sure you clean the spark plugs so they will spark. *EDIT* I think you should just buy new spark plugs. Why not lol :)
I have new ones but I don't want to blacken those up too. I thought the plugs were supposed to get wet with fuel and the soot on it is supposed to happen from sparking? I'm just about to run a ground from negative on my battery to the chassis and see if that helps
PureRush
06-18-2012, 07:33 PM
Nooo that not normal. That's called spark plug fouling and those deposits are bad for the spark plug(s) and indicate excess fuel or oil. But it's just advice you don't have to listen to me.
2plus4plus0eq6
06-18-2012, 07:49 PM
Nooo that not normal. That's called spark plug fouling and those deposits are bad for the spark plug(s) and indicate excess fuel or oil. But it's just advice you don't have to listen to me.
I appreciate the advice I didn't know that. I have new ones I can put in, but how do I go about starting the engine without flooding it? (I don't want to mess up the new ones)
And do you think its not starting because theres too much fuel?
Theres obviously sparking if its black right?
PureRush
06-18-2012, 08:00 PM
Yes it may be firing but very weak since the fuel mixture is too rich. Pull out the fuel pump fuse from the fuse box in the engine bay. The cover should say which one it is. Then crank the engine about 10 seconds at a time. You'll smell gas coming out of the exhaust at first then eventually the engine will start. When it dies you can put the fuse back in since all the excess fuel in the cylinder has been burned. Now that car should start without any problems
2plus4plus0eq6
06-18-2012, 08:38 PM
Ok great advice thanks. I will do that. I just took out the (newish) spark plugs that I had in there which I thought were fouled but weren't and replaced them with some NGK iridium ones. I poured a little bit of gas into the holes first. couple teaspoons worth. I looked down into the cylinders and it didn't look like it was flooded.
I just need someone to give me the OK before I start it up. I don't wanna blow anything up lol
EDIT:
I went and tried to start it. No luck. Got a little bit of backfire. I might try replacing the fuel filter to get some of that old gas out. hmm...
PureRush
06-19-2012, 12:38 AM
Omg the point is to get the fuel outta there so don't put anymore in! That's why I told you to remove the fuel pump fuse so that no more fuel gets into the cylinder. It took me a good ten cranks till it actually fired up for a couple seconds. A couple tea spoons is a lot of gas in there. Keep cranking it without the fuse. Once in a while take a break to let the starter cool down. If you smell gas coming from the exhaust, that's a good sign but obviously be careful
2plus4plus0eq6
06-19-2012, 10:39 PM
Omg the point is to get the fuel outta there so don't put anymore in! That's why I told you to remove the fuel pump fuse so that no more fuel gets into the cylinder. It took me a good ten cranks till it actually fired up for a couple seconds. A couple tea spoons is a lot of gas in there. Keep cranking it without the fuse. Once in a while take a break to let the starter cool down. If you smell gas coming from the exhaust, that's a good sign but obviously be careful
Lol I know.. I am just impatient. I took the plugs out as well as the pump fuse. Gonna let everything dry out. Ill replace the fuel filter too. It's cheap. A buddy told me to try and spray liquid fire into the air intake if all else fails. Whatever do you think?
PureRush
06-20-2012, 12:19 AM
No you only do that when theres no fuel. Good idea on letting it dry out. When you're ready to crank it just reconnect the ign system and leave the fuel pump fuse out. Before you replace the fuel filter, open your gas cap and crank the engine once to relieve the fuel system pressure
ka4life87
06-20-2012, 01:34 PM
Check your ignition timing, maybe someone pulled out the dizzy and didnt time it right, set the engine tdc and make sure rotor is pointing to number 1 spark plug wire, also check the o rings for injectors especially if engine sat for so long, if they dont seal fuel will leak past injectors and cause extremely rich mixture, also check maf to see if its wired correctly
Rb25silcoupe
06-20-2012, 02:14 PM
Yep, check the dizzy, if it's not timed right, the spark plugs won't spark
PureRush
06-20-2012, 03:53 PM
Do what they said after you try my idea. It can be difficult to set the distributor for some people with less experience
anarchyperf
06-20-2012, 04:26 PM
You can also just hold the gas pedal to the floor instead of pulling the fuse. That puts the car in clear flood mode
PureRush
06-20-2012, 04:46 PM
But if you pull the fuse and keep the throttle open then it would take less cranks to get it to fire :)
2plus4plus0eq6
06-20-2012, 08:51 PM
good advice guys. I thought by hitting the pedal, it would tell the ecu to send more fuel and therefore flood?
I don't think my CAS is messed up. The car started once before and I never changed anything like that since then.
The only real thing I changed was install a catch can and a manual boost controller in series from my intake hose to my wastegate. I turned the knob to zero boost. I don't think this vacuum change would be a problem?
I also got some injector cleaner I will add to the tank. Should help a little.
Thanks
EDIT:
There was 1 more thing thats changed from now since the last time it started. I hooked up the o2 sensor now. It might be wired wrong.. but even so. It started fine without it. could this be an issue?
budlite
06-20-2012, 09:16 PM
timing.........
PureRush
06-20-2012, 10:55 PM
How could it be timing if he didnt mess with it? Im telling you its excess fuel. You keep fucking with the gas leave it alone. Since the spark plugs are wet, you already have gas.
Step one: Remove fuel pump fuse
Step two: Install the spark plugs and the rest of the ignition system
Step three: Crank with throttle open until car starts
/end of thread
2plus4plus0eq6
06-20-2012, 10:59 PM
Ill keep you posted and let you know how it turns out when the wife gives me some more time ;)
2plus4plus0eq6
06-23-2012, 07:21 PM
Well.. I dried out the engine, cleaned off the new spark plugs, put in more new fuel with injector cleaner, changed the fuel filter, pulled the pump fuse and cranked the engine to burn excess fuel then tried with it back in.
I used a test light and I am getting power from the 4 pin end of the ignitor chip connector on the harness.
I plugged in the 4 pin connector into the Q45 ignitor chip and test lit the 6 pin while trying to crank the engine. The test light didnt light up. Not sure if it was supposed too.
I haven't found a Q45 ignitor chip diagram yet for testing the one I have. Not sure which year I have. I checked the resistance on the 6 pin side between the pins and I got around 8 Mega ohms.
I will try looking again for some more info on the chip I have and how to test it. This could be my problem.
Any advice is welcome. Thank you
PureRush
06-23-2012, 07:55 PM
You mean 8 milli ohms. Milli=low resistance. Kilo=high resistance
2plus4plus0eq6
06-24-2012, 10:31 AM
No.. I believe it's 8 mega ohms which is pretty much infinity. Small m is milli on the meter and big M is mega. I believe these readings are correct if the ignitor is okay but I will try and get more info
zneubauer
06-24-2012, 09:22 PM
unplug the injectors and crank it to get rid of all of the flodded fuel. then check your o2 sensor and timing.
2plus4plus0eq6
06-24-2012, 10:39 PM
unplug the injectors and crank it to get rid of all of the flodded fuel. then check your o2 sensor and timing.
I unplugged the spark plugs and aired out the engine for 3 days. You would think it would be enough?
I think my o2 sensor is okay. I tried cranking it with and without it plugged in. When it's plugged in and I am cranking, the needle on the temp gauge on the dash goes up 2/3 of the way then back down when I stop. Could be from the backfire? The exhaust isn't attached to my turbo elbow yet either.
How do I go about checking my timing? Is it easy to do and easy to put back the way it was if I needed too?
2plus4plus0eq6
07-08-2012, 07:56 PM
Got it running. wires were mixed up on my 4 pin ignitor side. Running rough though. I started a new thread here for it. http://zilvia.net/f/tech-talk/464084-sr-started-but-running-rough-video-attached-help.html#post4788945
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