Very hard to start?

Tiny
RUDYBREWER
  • MEMBER
  • 2007 SATURN AURA
  • 3.6L
  • 6 CYL
  • AUTOMATIC
  • 125,000 MILES
The car runs great, then I stop to fuel up and after fueling I have to crank it for quite a long time for it to start again. After the initial start, it will start very quickly and easily, until the next tome I need gas. Was told not to fill it each time. Tried that and no matter how much or little I put in, it is the same.
Thursday, May 14th, 2015 AT 10:25 PM

8 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
I have seen where the vent control solenoid sticks on causing too much vacuum to enter the tank you can take it to have the codes done or do them yourself by following this guide.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Please let us know what you find. We are interested to see what it is.

Cheers
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Friday, May 15th, 2015 AT 6:29 AM
Tiny
RUDYBREWER
  • MEMBER
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No, I was hoping to avoid the cost. Because it is such a specific problem, I thought maybe someone else had experienced it. I cannot let go of the key fast enough until I stop to fuel. Then, only on the initial startup, I have to crank anywhere from 20-40 seconds (or more) before it starts. After starting, the 1st few seconds, it sounds like an old carburator car that is flooded. It takes a few seconds to"clean out". Then it will start and run perfectly until the next gas stop where the whole process repeats itself.

I ordered a scanner today, Thanks.
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Friday, May 15th, 2015 AT 7:01 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Usually when I hear a concern like that I think the vent solenoid system. If you dont live in California you can get your codes read for free at the auto parts store. At some point it might not start after a fill up.
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Friday, May 15th, 2015 AT 12:47 PM
Tiny
RUDYBREWER
  • MEMBER
  • 3 POSTS
Hello, I just got checked. Have two codes, PO442 & PO496 both dealing with Evap emission. Not sure why my next step is now. Was told I have to now go through diagnostics test to find out.
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Thursday, May 28th, 2015 AT 11:26 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
For the p0496 there has been tons of canister purge solenoids bad setting that code. With the canister purge solenoid unplugged I would see if you can blow thru it?They stick open allowing vacuum to always be flowing to the gas tank. That could explain the car hard to start after filling the tank.
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Thursday, May 28th, 2015 AT 7:02 PM
Tiny
TAYLOR ELIZABETH
  • MEMBER
  • 1 POST
But what if your car is doing these things but isn’t giving you any codes?
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Wednesday, September 9th, 2020 AT 7:01 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

Do you have the same codes set as this question is addressing? If it is hard starting after fueling, that could be the purge valve for the system that was addressed in one of the answers.

Codes will cover fuel control failures, not mechanical.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

What are your symptoms? I attached the procedure for the purge valve and some pictures for you to view.

Roy

Evaporative Emission Canister Purge Solenoid Valve Replacement

Removal Procedure

imageOpen In New TabZoom/Print

1. Remove the fuel injector sight shield.
2. Disconnect the chassis EVAP pipe (3) quick connect fitting from the EVAP purge solenoid.

imageOpen In New TabZoom/Print

3. Disconnect the EVAP emission canister tube quick connect fitting (2) from the EVAP purge solenoid.

imageOpen In New TabZoom/Print

4. Disconnect the engine wiring harness electrical connector (2) from the evaporative emission (EVAP) purge solenoid.

imageOpen In New TabZoom/Print

5. Remove the EVAP purge solenoid bracket bolt.
6. Remove the EVAP purge solenoid.
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Wednesday, November 25th, 2020 AT 8:24 AM
Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
This is a pretty common thing when the EVAP (emissions) system has raw fuel in it. This system is only supposed to pull the vapor out of the tank and use it in the engine so that it is not released to the atmosphere. However, when this system gets raw fuel in it, the charcoal in the charcoal canister will breakdown and will clog the purge solenoid. This will cause it to stick open and allow too much vapor into the engine causing a hard start after filling the tank because it is pushing more vapor into this system.

I am attaching the process to replace both the purge valve and the canister as I suspect both are failed at this point. This is for the vehicle listed on this post. If you have a different vehicle then let's get a new post started and we can get the process for your specific vehicle.

https://www.2carpros.com/questions/new

Let us know if you have other questions. Thanks
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Wednesday, November 25th, 2020 AT 8:29 AM

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