Zo6 LVR
Well-known member
95 LT1, started fine from last October when I bought it until about two weeks ago.
It used to start after just a couple of revs of the crank, now it takes a couple of times with the key cranking for it to fire. It seems once it has started and I shut the engine off, if restart right away or within 10-20 minutes it starts just like it used to, but if I let it sit overnight or for an hour or more it takes longer crank time to fire.
I believe the fuel regulator has a check valve? that could let releasing the pressure over time and when I restart after it sits for a while the pressure needs to build back up before it will fire. Also the service manual mentions a check for this condition and a check for defective injector leaking. I don't have a fuel pressure gauage yet. Does anyone know of a good way to diagnois this condition while I'm waiting for my fuel pressure gauge to arrive? Also, am I on the right track for this condition or are there other possibilities? Oh, I did put in a bottle of Techron fuel cleaner on a full tank just before this started happening.
It used to start after just a couple of revs of the crank, now it takes a couple of times with the key cranking for it to fire. It seems once it has started and I shut the engine off, if restart right away or within 10-20 minutes it starts just like it used to, but if I let it sit overnight or for an hour or more it takes longer crank time to fire.
I believe the fuel regulator has a check valve? that could let releasing the pressure over time and when I restart after it sits for a while the pressure needs to build back up before it will fire. Also the service manual mentions a check for this condition and a check for defective injector leaking. I don't have a fuel pressure gauage yet. Does anyone know of a good way to diagnois this condition while I'm waiting for my fuel pressure gauge to arrive? Also, am I on the right track for this condition or are there other possibilities? Oh, I did put in a bottle of Techron fuel cleaner on a full tank just before this started happening.