Hard to start C4
Thread Starter
Intermediate
Joined: Oct 2008
Posts: 45
Likes: 0
Hard to start C4
My 84 is really hard to fire up after setting overnight. I have to crank it for about one minute or longer to get it firing. I have tried pumping the gas pedal and everything I can think of.
Someone said it could be the fuel regulator. I don't know much about the crossfire injection setup.
Any ideas if it is the fuel pump, regulator or just my stupidity?:withstupid
Someone said it could be the fuel regulator. I don't know much about the crossfire injection setup.
Any ideas if it is the fuel pump, regulator or just my stupidity?:withstupid
Thread Starter
Intermediate
Joined: Oct 2008
Posts: 45
Likes: 0
I am still having trouble with starting. No fuel from the injectors when cranking. I pour a little bit of gasoline down the hatch and it fires right up. When it fires up the injectors start spraying. I took it to a mechanic and he said it was the ignition module but I find that hard to believe. Would the IM regulate the injectors? I wouldn't think so.
It doesn't make sense of pouring gasoline down the throttle body and then the injectors start spraying.
It doesn't make sense of pouring gasoline down the throttle body and then the injectors start spraying.
Melting Slicks
Joined: Aug 2008
Posts: 2,082
Likes: 50
From: Palmdale CA
I am still having trouble with starting. No fuel from the injectors when cranking. I pour a little bit of gasoline down the hatch and it fires right up. When it fires up the injectors start spraying. I took it to a mechanic and he said it was the ignition module but I find that hard to believe. Would the IM regulate the injectors? I wouldn't think so.
It doesn't make sense of pouring gasoline down the throttle body and then the injectors start spraying.
It doesn't make sense of pouring gasoline down the throttle body and then the injectors start spraying.
Just accouple things to think about.
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Verdad Gallardo
Le Mans Master
Joined: Jan 2006
Posts: 5,621
Likes: 206
From: Orlando FL
I don’t know much about the specifics of that engine system but here are some general suggestions.
Is fuel pump running at key turn. Check fuel pump relay. Check fuel pressure at key turn.
Fuel filter, Fuel pump
Cold start injector if it has one. (As said)
Bad injectors, leaking. (probably not)
Does not sound like the IM is bad…obviously. (IM drives the coil, not injectors).
By measuring the fuel pressure will give some real data as to what is going on.
Is fuel pump running at key turn. Check fuel pump relay. Check fuel pressure at key turn.
Fuel filter, Fuel pump
Cold start injector if it has one. (As said)
Bad injectors, leaking. (probably not)
Does not sound like the IM is bad…obviously. (IM drives the coil, not injectors).
By measuring the fuel pressure will give some real data as to what is going on.
Last edited by pcolt94; Oct 8, 2009 at 07:33 AM.
