Lanos Engine Starts but then dies out

daewooluvr · Post by **daewooluvr** » Sun Oct 12, 2008 11:01 pm

Hey guys,
I swapped out my tail lights in my Lanos for the 2001+ newer style lights this weekend. I had started the car several times to test the lights to make sure they were working as they should. Everything went fine. I cleaned everything up and locked it up.
The next day I get in it to run to the store. Turned the key and it started but then died out. Tried it again, several times. Same result. I checked all the fuses, none blown. I check the spark plugs, they all seemed fine. I removed the air filter thinking maybe it was blocked up but this didn't fix it. I was going to remove the exhaust at the first catalytic converter to see if that was backed up but the bolts are rusted on tight. This was much easier when I had air tools. I hear the fuel pump switching on so I know it's not a fuel issue. Plus the engine turns over for a second which implies it's getting fuel and spark.
My suspicion is that the exhaust is blocked and it's suffocating the engine.

Does anyone have any other suggestions?

daewoomofo · Post by **daewoomofo** » Mon Oct 13, 2008 9:47 am

how old is the fuel filter? ive had lawn mowers do the same thing when there was a clog in the fuel system.

daewooluvr · Post by **daewooluvr** » Mon Oct 13, 2008 1:04 pm

daewoomofo wrote:how old is the fuel filter? ive had lawn mowers do the same thing when there was a clog in the fuel system.

I would think that the engine wouldn't start if it was the fuel filter. It will start for a second but then dies out.

Today I'm going to remove the Throttle Body, clean it out real good and test the sensors.

daewooluvr · Post by **daewooluvr** » Mon Oct 13, 2008 10:38 pm

Update:

Well I tore the throttle body apart cleaned it up and hooked everything back up and it didn't fix the problem. However it did run a little longer than it did before. So I sprayed a little more TB cleaner in the throttle body and it ran for about 20 seconds and died out. So this is pointing to a fuel problem now.

My next step is replacing the fuel filter. Anyone remember if there were any special tools required?

daewooluvr · Post by **daewooluvr** » Mon Oct 13, 2008 11:40 pm

Here's a link to the How-To in case anyone is following this thread with the same issues:
http://www.daewootech.com/forum/viewtopic.php?t=2679

I got a fuel filter for under $10. Plan on replacing it tomorrow.

daewoomofo · Post by **daewoomofo** » Tue Oct 14, 2008 12:43 am

"easiest" way to replace the fuel filter is to just pull on the SOB. i need to do mine too.....

daewooluvr · Post by **daewooluvr** » Tue Oct 14, 2008 1:58 am

daewoomofo wrote:"easiest" way to replace the fuel filter is to just pull on the SOB. i need to do mine too.....

I have a fuel line tool that makes it a pretty easy job. Only reason I didn't do it today was because it started getting dark and I don't have a garage anymore so I ran out of light.

daewooluvr · Post by **daewooluvr** » Wed Oct 15, 2008 2:46 pm

ugh well the fuel filter was a pain in the @$$!

On the one end it had the little plastic clips that you press in to release the line.

On the other end it had one of those round plastic 'quick release' (haha yeah right) tabs to release this end.

I pushed down on the 'quick release' tab and it fell apart leaving me with no way to release the clips inside.

I ended up having to cut the filter off with some sheers and shove something down inside to release the clips.

After all that, it still didn't fix the problem. UGH.

So I'm lead to believe it's either the fuel pump (which I will test tonight) or the ECU.

Any suggestions on upgrades to either of them? I would like a better fuel pump with intentions on doing further performance mods. I would also like Perfect Power SMT6 for the ECU but I need more info on it.

Any help is appreciated.

xiaogary · Post by **xiaogary** » Wed Oct 15, 2008 6:12 pm

How often do we need to replace the fuel filter?

daewooluvr · Post by **daewooluvr** » Wed Oct 15, 2008 7:03 pm

xiaogary wrote:How often do we need to replace the fuel filter?

Someone correct me if I'm wrong but they suggest you replace it everytime you replace your air filter as part of a full tune up.

Does anyone have a hook up on getting fuel pumps? If mine's bad (I'll test tonight) I'll need to get one right away.

greenbluewoo · Post by **greenbluewoo** » Wed Oct 15, 2008 8:01 pm

check the sensors on your throttle body see if all of them are connected because one of mine was unpluged and my car would start then die and after i pluged it back in everything was fine hope that helps

daewooluvr · Post by **daewooluvr** » Thu Oct 16, 2008 1:01 am

greenbluewoo wrote:check the sensors on your throttle body see if all of them are connected because one of mine was unpluged and my car would start then die and after i pluged it back in everything was fine hope that helps

Yeah they're all plugged in. Tomorrow I'm going to replace them. Luckily I have two other throttle bodies in storage.

I tested the fuel pump and it's working, which is good cuz a new one was gonna cost me over $200USD.

Hopefully this fixes the problem tomorrow.

daewoomofo · Post by **daewoomofo** » Thu Oct 16, 2008 9:45 am

chct your fuel pressure. even though the pump kicks on, it might be geting weak so it doesnt have the power to create the fuel prssure needed to run correctly

jidasas · Post by **jidasas** » Thu Oct 16, 2008 1:09 pm

I've always replaced fuel filters at around 20,000 miles...they last at least that long...and in some cars the manual actually says to only change it every 50,000 or 100,000 miles.

Jimmy

daewooluvr · Post by **daewooluvr** » Thu Oct 16, 2008 1:23 pm

daewoomofo wrote:chct your fuel pressure. even though the pump kicks on, it might be geting weak so it doesnt have the power to create the fuel prssure needed to run correctly

I'll be doing that tonight as well.

Here's some articles for anyone who need to know how.

http://www.2carpros.com/dia/test_fuel_pressure.htm

http://www.automedia.com/Fuel_Pump_Pres ... 080201fp/1

http://www.ehow.com/how_2143018_test-fu ... e-car.html