weird issue...
Umm..Remove plugs and fuel pump fuse and crank for a bit, might be real flooded. Then put everything back and retry.."scratching my head as well". Maybe remove intake hose to the throttle body when u try again.
See I thought of this too, it sat for 16 hours or so, figured it would dry up..?
Spark Plugs It doesnt make sense if you have compression,fuel and spark it should at least be popping and farting, I know you said you checked the plugs but I have had a similar situation where the engine I was working on was in the same situation as you are in. A old mechanic friend suggested new plugs and I said the same thing the old ones have a spark that looks ok, and I was sure the plugs were not the problem, well for ***** and grins I installed new plugs and it fired right away, I dont know why but that did the trick I am still scratching my head to this day and give props to my old mechanic friend.
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Verdad Gallardo It's gotta be a fuel issue cause you KNOW its getting spark. If it was getting any fuel it would be doing SOMETHING. Possible injector driver in the ecm? No you said your getting signal. which most likely eliminates wiring. What about your fuel pressure? When I worked at the dealer I had a car come in on the hook and it would start with the carhart cleaner so I knew it was fuel checked the fuel pressure and it was good all the injectors were good wiring and fuses all. Then one of the old guys had me check the fuel pressure while cranking and it would drop. It turned out that the fuel pump was bad and could not support the engine with the available power during cranking.
Maybe this helps I don't know just thinkin out loud maybe something will come of it.
Maybe this helps I don't know just thinkin out loud maybe something will come of it.
I will try ether maybe today if I can before work. I checked the orange wires off the ecm. They are getting constant 12volt and maintain when cranking and key on. Pink wires alll see 12v with key on and 10volts while cranking, so that seems fine.
Is it possible your out of fuel. What pump setup are you runnin. Just thought of this, I have the new style gto tank/pump in my Chevelle. I started it one day two days later went out cranked it it coughed then nothin started checking stuff out figured out no fuel and when I pulled the pump out the little flapper valve that let's the bucket fill up with fuel was stuck. Freed it up and has worked every since.
Is it possible your out of fuel. What pump setup are you runnin. Just thought of this, I have the new style gto tank/pump in my Chevelle. I started it one day two days later went out cranked it it coughed then nothin started checking stuff out figured out no fuel and when I pulled the pump out the little flapper valve that let's the bucket fill up with fuel was stuck. Freed it up and has worked every since.
Ok just got off the phone with my buddy. Are you running a speed density tune? He was almost certain the it is the gap you have between your throttle body and intake. Because the map sensor is not seeing any vacuum during cranking it does not know how long to pulse the injector and thinks your in "clear/flood" mode. Get that taken care of first then see where you are. Also you should be able to shoot some ether in it still and make sure it will light off.
Ok just got off the phone with my buddy. Are you running a speed density tune? He was almost certain the it is the gap you have between your throttle body and intake. Because the map sensor is not seeing any vacuum during cranking it does not know how long to pulse the injector and thinks your in "clear/flood" mode. Get that taken care of first then see where you are. Also you should be able to shoot some ether in it still and make sure it will light off.
It makes sense!!!!! everything else is there.
I may have a couple ports not plugged on the intake either. lol
Last edited by ls1_chevelle; Apr 28, 2011 at 09:33 PM.
Alrighty, just got back from work. Cleaned up all the vac leaks, put a tb gasket in, double checked everything and still no start. No coughing or anything!!!! Grrrrrr
I live in alberta, I travel to northern alberta and work in the oilsands(fort mcmurray).
I live in alberta, I travel to northern alberta and work in the oilsands(fort mcmurray).
