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Old 05-12-2009, 07:44 PM   #27
56pontiac
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Location: shippenville, Pennsylvania
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Re: 05 Cobalt fuel problem

Quote:
Originally Posted by J-Ri View Post
Good to hear that it runs!

Find and fix the open in the wire between the fuse and battery, there's a chance that interfering with the circuit you jumped power from could be causing voltage problems for both circuits and making the engine die. After you do that (and if it still dies), I'd check the fuel pressure before dropping the tank again, these engines don't need even close to the 3/8" line that they have, mine will idle for 20 minutes on 12 oz of fuel injector cleaner which flows in through a 1/16" line. They use the same size line on almost all GM vehicles, the 454 V8s have the 3/8" just like our cars do. If that line was kinked to the point that it turned white on the sides where it was flat, I'd fix it, otherwise it's probably fine. They say "non-repairable" on them, but that just means with rubber hose. Carquest (and probably others) have repair kits for the hard nylon lines, you just have to use the parts in the kit, no using rubber hose or screw-clamps.

For that stuck plug, spray a little bit of penetrating oil down the hole and let it sit overnight or between working on it. That should make it much easier to get out. I've had some that were stuck pretty good, and I think I twisted my 12" extension about 1/8 of a turn before the plug came out with no problems. When you reinstall them, apply a light coating of nickel or copper (NOT the glass bead stuff) based anti-seize to the threads and the plug seat. Just don't get any on the electrode or you'll get a misfire if it bridges the gap. They'll turn out with no problem next time if you do that.
Thanks again. I'll check the wire next time I get out to the car. My problem is that I have to stay home and keep an eye on my Mom who has late stage Alzheimers.My wife works and I can't leave my Mom alone.Area Agecy On Aging comes out this week to see her.Then we have to start the hated process of putting her in a home. I don't have a garage and have the car at a friends place in the bottom of his barn.If the car were here I'd be able to spend more time on it.Thanks.
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