How long is a nice bit? Long enough to nuke a burrito? Long enough to enjoy the morning coffee, or just like oh 3 seconds or so? Cold starts usually take a little longer, but shouldn't be too long. But that depends on a few things, condition of starter, fuel pressure, fuel injector condition, timing, and air flow.
1985 Duke- I usually turn the key on, click start,(not crank) and then crank to start. using this method, it probably doesn't turn over 1 revolution before it's running !
When the car is cold or been shut off for a while it takes about2 to 3 seconds of turning over before it starts. When it is warm or haven't been shut off for long it starts up right away. I will have to try and see if waiting makes the difference.
I was just wondering if this is normal or maybe the gas could be leaking back in the tank? Maybe it's all good. I am going to time it again when I go and post back.
As has been previously suggested... If you can hear the fuel pump prime when you turn the ignition key, wait 'til it stops before you turn the key a bit more to crank the starter. See if that makes a difference. But yeah, if the fuel pressure dissipates immediately after the fuel pump finishes priming, that won't do you any good... but then it would be time to figure out where the fuel pressure is being lost.
Originally posted by Lou6t4gto: 1985 Duke- I usually turn the key on, click start,(not crank) and then crank to start. using this method, it probably doesn't turn over 1 revolution before it's running !
But note to many things can cause long crank time... highlights: Low battery. Low fuel pressure or bad fuel relay. weak CPS or Reluctor. (Iffy pickup coil, magnet and/or metal part for them.)
------------------ Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should. (Jurassic Park)
Id say anything over 5-10 seconds is unusual for an engine in good condition. It should really start in just a few seconds. My Ferrari kit started the second I turned the key. It was bad because if I just bumped the starter, it would start even if I didn't want it to like to mark timing lines.
It's not the battery, a good crank on that. When I started the car this morning after all night, it cranked it seemed for a long time and started fine or it seemed like a long time compared to other vehicles that I have. When I got off work this afternoon I tried turning the key ahead without starting while listening to the fuel pump and when it cut off I cranked and it seemed like it done it in half the time. I will keep testing and post back.
Test the fuel pressure, low pressure will cause this, also when testing the pressure, turn the key on wait for the pump to prime and stop, then see if it holds pressure, if it doesn't it could be a bad check valve in the pump or a bad fuel pressure regulator. all of the above will cause long cranking times. Also on DIS cars it can take up to one full revolution before the ICM knows where the crank is, so it knows what coil to fire. The ICM doesn't remember and the ICM does all the control during cranking. The ECM nevers knows where the crank is on a TBI. Just FYI
