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 Post subject: A question(or two)....
PostPosted: Thu May 03, 2018 6:38 pm 
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Location: Macedonia, OH
Year and Trim: 2002 SE
When I take the car into the shop to fix the LIM and/or gasket (among other things), should I have the shop look at my fuel pressure regulator and the valve covers? In terms of the valve covers - should I bother? I know about the recall on the 3800, and I don't know if it was performed on my car - as my VIN doesn't say I need(ed) one. I can take apart the valve covers and replace the gaskets on them (if necessary). As for the FPR, I don't think anything is wrong with it but I feel like I should check it (along with the valve covers), considering the miles on my car.

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PostPosted: Thu May 03, 2018 10:48 pm 
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What recall are you referring to? The fuel pressure regulator recall was only for 1998-2000 models.
Of course, after 15 years or so, it can be bad.
You can easily test the FPR yourself. First, just pull the vacuum hose off the regulator and give it a whiff.
If it smells like gasoline or has any liquid in it, the FPR is leaking and needs to be replaced.
Next, you'd need to borrow or buy a fuel pressure test gauge.
You start the car with the gauge connected, check the fuel pressure readings with the vacuum hose connected and disconnected.
If the fuel pressure increases by 10 psi when you remove the vacuum hose, it's working normally.

This guy knows what he's talking about:
https://www.youtube.com/watch?v=AKtR_yF7bi8

As for the valve cover gaskets, they either leak or they don't. Reasonably easy to see with the engine cover off.

The LIM itself is usually OK, it's the gaskets that fail AND the upper intake fails (that's called the plenum).


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PostPosted: Fri May 04, 2018 2:56 pm 
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Location: Macedonia, OH
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I was referring to the recall for the Grand Prix's, Buick LeSabre, etc. for their valve covers leaking onto the exhaust manifolds under hard braking.

Thanks for the info!

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