starting issues after car sits for a while

[CrisZenithBlue]

I’m pretty sure new valve and line are ok, double checked everything and it was good.
I did disconnect the MAF and doesn’t idle any better. I had it smoke tested a year ago came out air tight everywhere.

I did think maybe injectors might be the issue since it started after replacing, like maybe a slow leak from a pinched o ring but that wouldn’t be the case since the car sits for a week and starts at first crank, pressure would be all gone by then.

I have durametric, which values should I check and what am I looking for in terms of fuel trim?

[CrisZenithBlue]

updating this thread.

I havent had a CEL for a couple of years now, granted i drove it a lot less. But i continued to have the "hot start" issues, where if the car would sit for a while after being hot it would have a bit of an issue to crank, like take 2-3 seconds and maybe a touch of throttle to get it going. Also had this issue when starting right after filling with gas on a hot day.

The other day i was driving and P0455 pops up. because i already checked fuel pressure, smoked for leaks and replaced the purge valve (next to the intake), i went ahead and bought the Fuel Tank Bleeder Valve and Purge Valve that's on the charcoal canister (figured, while in there). i'm going to replace these soon, reset the CEL and see if i still have the hot start issues. oh, i replaced the crankshaft position sensor a long time ago to eliminate it as a possible cause.

i'll report back after these fixes

[CrisZenithBlue]

Not yet. I drove the car less and kinda lived with it because it wasn't a big problem. Im driving the car more now so will need to get back on it, maybe replace that one valve that I haven't yet, the one behind the headlight. Ill probably do that soon, if that doesn't do it, its back to the drawing board..

[blue62]

Cris,
Your P1128 and P1130 codes are telling you that the fuel system on both banks has reached the rich limit trigger point. So your fuel trims should be showing negative trims or taking fuel away. Your P0455 is as you know a fuel tank ventilation major leak.
So what is happening is you have a situation where fuel fumes from the fuel tank are coming into the intake from the EVAP system.
Causing hard starting when hot and most likely the P1128 and P1130 codes

Because of the above condition when the car is hot or warm it has trouble starting because the fuel mixture is to rich.
When you step on the gas pedal the reason that it helps is because you are giving the engine more air not more gas. Thus leaning the fuel mixture in the cylinders out and allowing the engine to start.

On a car with electronic fuel injection the ECU controls the fuel.
All that happens when you step on the gas pedal is the throttle plate opens farther allowing more air in and also the throttle position sensor tell the ECU/DME the throttle plate position.

[maxnine11]

Cris, did you ever get this issue resolved ??