air fuel spark
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TECH Enthusiast
Joined: Jan 2002
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From: Kansas
air fuel spark I have air, fuel, spark but still no start. This car is starting to really starting to **** me off. Does anybody have any real ideas?? It should be starting but isn't.
Thread Starter
TECH Enthusiast
Joined: Jan 2002
Posts: 673
Likes: 0
From: Kansas
I do have fuel and spark, you can check the plugs and they are wet with gas, you can hold a spark plug wire off and watch the spark. The fuel is new, there is no water in the system.
Because if you are SURE that you have fuel and spark.......all you have to do is open the throttle blade fully open one time.....THEN turn the key. It WILL start up for a few seconds. Air always gets into the intake unless you have a rag stuck in there. So don't worry about air. The problem MUST be with fuel and/or spark.
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Last edited by LS6427; Jun 15, 2011 at 04:46 PM.
Thread Starter
TECH Enthusiast
Joined: Jan 2002
Posts: 673
Likes: 0
From: Kansas
You can't check the injectors that way. These cars run 58psi of fuel pressure and without clamping them down on the manifold they would pop out of the fuel rails. I have checked everything that I can think of and it still won't start. What I am thinking is that maybe my timing has somehow shifted and now doesn't spark at the correct time. Other than that I am out of ideas.
You can't check the injectors that way. These cars run 58psi of fuel pressure and without clamping them down on the manifold they would pop out of the fuel rails. I have checked everything that I can think of and it still won't start. What I am thinking is that maybe my timing has somehow shifted and now doesn't spark at the correct time. Other than that I am out of ideas.
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Verdad Gallardo OK then....well here's the deal.
There is no possible way that if your timing is CORRECT and you are getting fuel and spark......that the engine cannot turn-over and start, then running for a few seconds......FACT. And thats with a 100% closed TB and IAC valve. Enough air gets by the TB just sitting closed.....its not a sealed off system like a space suit.
So....your timing could be WAY the **** off where maybe the spark is happening when the piston is NOT nearing or at TDC. If thats happening....you will never start. But raw fuel will be everywhere.
STOP looking at an air issue.......its a spark or fueling issue. Maybe the injectors aren't firing properly. I've been told that if ANY of the fuel injectors on one bank are acti9ng up "electrically".....all 4 of them will not work.
.
There is no possible way that if your timing is CORRECT and you are getting fuel and spark......that the engine cannot turn-over and start, then running for a few seconds......FACT. And thats with a 100% closed TB and IAC valve. Enough air gets by the TB just sitting closed.....its not a sealed off system like a space suit.
So....your timing could be WAY the **** off where maybe the spark is happening when the piston is NOT nearing or at TDC. If thats happening....you will never start. But raw fuel will be everywhere.
STOP looking at an air issue.......its a spark or fueling issue. Maybe the injectors aren't firing properly. I've been told that if ANY of the fuel injectors on one bank are acti9ng up "electrically".....all 4 of them will not work.
.