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 Post subject: 97 metro auto
PostPosted: Sat Apr 12, 2008 7:39 am 

Joined: Thu Apr 03, 2008 8:34 pm
Posts: 5
Hello. I have a 97 metro lsi 4 door auto. I started at 36 mpg. I am at 38 by slowing down to 55. I also have 160 80 13 tires instead of the 155s. My milage is not adjusted for the tires. Not enough difference to worry about. I just got a scangauge. Was wondering where I can start a fuel log online. I am also going to try to break 50. Does any driving techniques work for auto. What others mods will make a big difference on this auto. the scangauge says my spark is at 4 degrees. This car has 185k on it. I am planning on doing a maintance weekend on it. hasnt had much care. Plan on fixing brakes, tranny fluid, reattach muffler, oil change, running 0w20, new cv joints.

Played with my scangauge today. I did notice that the slow i go the better the gas milage. I think if i drive 40 i can get 50 mpg. So i guess my goal will be 50 mpg at 55 mph. It looks like milage is not really a problem. Just how slow do you want to go.

I started getting an egr malfuntion code. what is the loss of milage and damage to the 4 cylinder engine? I have seen where the 3 cylinder lose a cylinder but have read nothing on the 4 bangers

 Post subject: Re: 97 metro auto
PostPosted: Sun Apr 13, 2008 9:02 am 
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Joined: Tue Mar 16, 2004 6:23 am
Posts: 1745
Location: Washington, DC
You're doing well already for a 4 cylinder auto. You could probably do with a bit more timing, the three cylinders are supposed to be 5 but run much better at 10. Not certain about the four, but I think it should be similar. Mark the position of the distributor then loosen the adjustment bolt and turn it toward the firewall a millimeter or two. Listen closely for ping especially under medium (half to two thirds) throttle opening, like when going up a small hill at speed. Car will probably run a bit better with the EGR clogged, but it won't pass emissions and it's more likely to burn valves. Valves aren't as big a problem on the fours as on the threes, but it's still going to happen eventually.

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