Far more likely you've got a gasket leak on the intake.
I remember cleaning and setting my points that way to get back on the road
as well. Don't miss all the time I spent broken down on the side of the
road making those repairs.
----- Original Message -----
From: "john niolon" <jniolon@bham.rr.com>
To: "shop-talk" <shop-talk@autox.team.net>
Sent: Friday, December 07, 2007 10:07 AM
Subject: [Shop-talk] PO174 - PO176 OBD CODES
> MY '03 Tahoe through a check engine light at me yesterday... reader shows
> po174 and po176 codes which are engine lean...both banks
>
> from my googling it seems that it 'might' be a dirty MAF sensor or vacuum
> leak
> or leaking hoses etc
> figured I'd start with the MAF sensor.
>
> what's the best thing to clean it with and procedure if more than just
> spraying it down good ?? does it need to be removed from the MAF or
> cleaned
> in place...
>
> what ever happened to cleaning/setting your points with a matchbook cover
> and
> getting back on the road ?? I hate technology... oh and windows vista...
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