Blasirl

Morning all.,

I have a 2007 LT sedan and for some reason it refuses to start first thing in the morning. Kind of like the fuel system needs to be primed first. I am considering putting in a new fuel filter, but what else should I look at? I tried searching for a similar issue, but I must not be using the right search terms as way to many irrelevant threads pop up.

Thanks in advance for any help.

Robert

PS. Why can I not add a tag when the box says I can add 5??

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ECaulk

iTrader: (6)

Any CEL codes?

jdbaugh1

iTrader: (1)

Doesn't the fuel filter or pump have a check valve that prevents the fuel from back-flowing to keep the fuel line pressured up? Don't know how likely it is but possibly you are losing fuel pressure that way. Someone else can chime in if that is a thing or not, just a guess.

steelmesh

Yes it's a thing, you can see it with a fuel pressure gauge there should be a spec.

From a 2.4 LE5 Solstice procedure:

1. Observe the J 34730-1A with the fuel pump commanded ON. The fuel pressure should be 345-414 kPa (50-60 psi) .

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  • If the fuel pressure is less than 345 kPa (50 psi) , inspect for a restricted fuel feed pipe, poor connections at the harness connectors and ground circuits of the fuel pump, or a faulty fuel pump module.
  • If the fuel pressure is more than 414 kPa (60 psi) , replace the fuel pump module.

1. Monitor the J 34730-1A for 1 minute . The fuel pressure should not decrease more than 34 kPa (5 psi) .

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  • If the fuel pressure decreases more than 34 kPa (5 psi) , refer to Circuit/System Testing.

IMPORTANT: The fuel pressure may vary slightly when the fuel pump stops operating. After the fuel pump stops operating, the fuel pressure should stabilize and remain constant.

Blasirl

None yet.

If so, is it something I could inspect?

Is there a place I can connect a temp gauge and for that matter where can I purchase an inexpensive one?

jdbaugh1

iTrader: (1)

There is a schrader valve on your fuel rail where you can connect a fuel pressure gauge.

Blasirl

Do I need this and what do you think of this ?

jdbaugh1

iTrader: (1)

I don't know if you'll need an adapter to use the OTC gauge but can't find what fittings come with the gauge. I would think it should come with the appropriate fittings. The one you posted has high number of stars but the comments in the review section are negative. Those could be shill reviews though idk. I have had good luck with other OTC products. You may also be able to rent a gauge from an auto-parts store.

steelmesh

I got one of these HF testers: https://www.harborfreight.com/Fuel-I...ter-62623.html

Blasirl

Thanks all for the reply's. I am a big HF fan, so for $15.99 I'm in.

WICobaltSS

Any smell of fuel? Being from the lovely "Rust Belt of America", be sure to check your fuel lines, specifically where it goes up to the rear wheel well. My Daughter's Ion and my Cobalt had rusty lines in the exact same area.

Blasirl

For a short while the padlocked car light was on. I have not been able to have the codes read yet, but hopefully soon. I'm starting to wonder if this has anything to do with the key fobs not working. When I first acquired the car, I tried to have the dealer reprogram a mix of repaired and newly purchased key fobs and they failed saying some module was probably faulty.

No rust issues at all, the car is in pretty good shape. When my daughter gets home, i'll relook to see if I may have missed something, now that it is nicer out, I'll be willing to spend a bit more time under the car.