<font face="Comic Sans MS">My 2.8L has been getting 16mpg lately (with me averaging 65-70 with a mix of city and highway driving in the cold michigan winter)... First of all, check your timing. I'm not sure about the figures for yours, however I would think it's around 8° BTDC. I have mine over advanced a little bit. In the cold I wouldn't recommend it. Set it to factory specs for when it's cold. Adjust the timing according to the sticker under the hood, with the engine running at the right RPM's and such.
Items I'm recommending you buy:[*]Inductive timing light ~ $35[*]Vacuum guage ~$20[*]Adjustment tool for the Rochester carb idle mix (it's a little rectangular screw type thing in the front. Look to see if you can see this screw, it's on the front of the base of your carb. If you cannot see it, then it's plugged, tell me and I'll get you the information on how to get the plug out of the way so you can adjust your idle.
The vacuum guage will help you set the idle fuel mix. Adjust it until you get the highest vacuum reading, then enrich the mixture 1/4 turn or so. If you need more in-depth explanations, let me know.
The 2.8L is a good little engine and if adjusted properly makes a decent amount of power (unless it's got an automatic behind it)... [img]/wwwthreads_images/icons/crazy.gif[/img]
You can not hammer the throttle when the engine is cold, it does not work correctly when it's cold if you do that. Have you checked the operation of your choke? Could be sticking shut. Spray some carb cleaner on the linkage. Have you checked all the vacuum lines? If they seem deteriorated, cracked, or if rubber comes off of them on your finger tips when you touch a vacuum line, replace it.
The combination of these things should help you to get up to around 16-17mpg in the winter... Perhaps a bit better in the summer. Good luck and let us know what you find out.
One last thought... Have you been running it in 4x4 a lot? Not sure if you mentioned it's a 4x or not but if it is that'll help kill your gas mileage also.</font>
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