- Dec 12, 2011
- 4,656
Recently I've noticed the engine has a long starting process, cranks but needs gas pedal depressed to get engine to finally fire, mainly after refueling.
Also, when first started, at most times long after it has been refueled, it will stumble then pick up again, pretty much on a 5 sec interval for about 30 seconds.
I believe it's either a fuel filter or other evap issue.
I listened near the tank and the pump sounds normal. I did notice that after the engine was started, after about 10 seconds, I can see the bottom of the gas tank get sucked upwards. When the vacuum releases, the tank settles down and the idle appears normal.
I don't know if the tank getting sucked in from the evap is normal.
I may have a weak coil pack, but wanted to try the fuel first.
Is that a normal evap sequence to draw that much vacuum at startup?
Also, when first started, at most times long after it has been refueled, it will stumble then pick up again, pretty much on a 5 sec interval for about 30 seconds.
I believe it's either a fuel filter or other evap issue.
I listened near the tank and the pump sounds normal. I did notice that after the engine was started, after about 10 seconds, I can see the bottom of the gas tank get sucked upwards. When the vacuum releases, the tank settles down and the idle appears normal.
I don't know if the tank getting sucked in from the evap is normal.
I may have a weak coil pack, but wanted to try the fuel first.
Is that a normal evap sequence to draw that much vacuum at startup?