My son's Disco has had an odd starting issue for a while where it just doesn't like to catch the first go around. It reminds me of when a vehicle is out of gas.
So I have tried to let the pump run for a few seconds before starting, but that doesn't seem to make a difference.
I've pulled all the plugs and found that none of them looked odd, but they were all gapped way too wide. That didn't make a difference.
It has been throwing misfire codes.
I checked the pressure at the fuel rail by simple seeing what happens when I depress the valve:
When I got there, and after confirming that it won't start, and seems like it is out of gas, I just decided to do a quick parking lot assessment: electrical connections, and nothing weird, then air, spark, fuel. The one that didn't check out was the fuel. Unlike previously, this time when I depressed the valve on the fuel rail, all I got was compressed "air". After 5-6 seconds of hissing, it sort of spits fuel.
This seems really strange to me. I don't think it's possible to have vapor lock. And their is obviously pressure in the line. So it must be picking up air someplace?
It was nearly 100 degrees out, and the engine was too hot to fool with much. So we left it for a few hours. I came back, and after giving its signature cough, it started. But at first it was obviously misfiring. Once that cleared, it drove normally for the whole way home, stop and go, and at freeway speeds. At first it did not have a check engine light on, but by halfway home it lit up.
I plan on changing the plugs and wires tomorrow or Monday, then the coil pack if that doesn't fix it. But what of this air in the fuel line? Any other thoughts?
So I have tried to let the pump run for a few seconds before starting, but that doesn't seem to make a difference.
I've pulled all the plugs and found that none of them looked odd, but they were all gapped way too wide. That didn't make a difference.
It has been throwing misfire codes.
I checked the pressure at the fuel rail by simple seeing what happens when I depress the valve:
- Overnight, fuel flows well.
- After turned off for a few hours, fuel gushes.
- While running, fuel gushes.
When I got there, and after confirming that it won't start, and seems like it is out of gas, I just decided to do a quick parking lot assessment: electrical connections, and nothing weird, then air, spark, fuel. The one that didn't check out was the fuel. Unlike previously, this time when I depressed the valve on the fuel rail, all I got was compressed "air". After 5-6 seconds of hissing, it sort of spits fuel.
This seems really strange to me. I don't think it's possible to have vapor lock. And their is obviously pressure in the line. So it must be picking up air someplace?
It was nearly 100 degrees out, and the engine was too hot to fool with much. So we left it for a few hours. I came back, and after giving its signature cough, it started. But at first it was obviously misfiring. Once that cleared, it drove normally for the whole way home, stop and go, and at freeway speeds. At first it did not have a check engine light on, but by halfway home it lit up.
I plan on changing the plugs and wires tomorrow or Monday, then the coil pack if that doesn't fix it. But what of this air in the fuel line? Any other thoughts?