Quote:
Originally Posted by alwayscode390
These are DEFINATELY some quirky cars.
I had no clue about letting the fuel pumps prime the rails ... but it makes total sense.
I will see if that helps out my situation.
Thank you all  --- |
You're going to have to get to know your car. It isn't always the case
that you want to wait the 2 sec to let the fuel pressure come up.
Here is why.
1. If your fuel pumps hold pressure well after being turned off then you can go straight to starter, no waiting 2sec for pressure.
2. If your fuel pumps do not hold pressure (excessive and
quick pressure bleed off) then is does no good to pressurize the rail since the pressure bleeds off too quickly (yes this probably should be addressed/fixed but if you're not up to pulling fuel pumps right away then read on) This was the last failure I had and going straight to the starter position yielded a faster start.
3. If your fuel pumps bleed off pressure slowly then it may make sense to hold for the 2 secs to get a better chance at the highest pressure.
Here's the deal. I've had my car now for 15yrs and several fuel pumps and have seen all three of the above. To find out how yours behaves you need to attach a fuel pressure gauge to the rail and see.
If the goal is to reach the quickest start time know which of the 3 you have and start accordingly.
One other pointer. It's not a good idea to do aggressive lateral driving with < 1/4 tank. If the fuel pumps suck air it stresses/ages them and can lead to premature failure.
It's another quirk.