PLEASE HELP!!
Elder User
Joined: Apr 2001
Posts: 772
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From: Glen Burnie Maryland
PLEASE HELP!!
I've got an '87 F-150 4.9L, T-18, and 3.55. bone Stock, 113,000 miles. Running stock P215/75R15. Bought it about 4 months ago. Was getting 10-11 on highway.
new plugs, cap, Rotor, no change.
Changed the vacuum canister (coffee can)2 wks ago 'cause it had rotted out around the top seam and the PCV valve.
Now getting 14-16. No change in driving habits, shift at 2500-2800. Was pulling my boat to ramp 10 miles up road but didn't affect mileage.
Gonna try side gapping the autolites tomorrow. And maybe heavier wires. the stock wires tested out good but I think they've been on a good while.
Larry
new plugs, cap, Rotor, no change.
Changed the vacuum canister (coffee can)2 wks ago 'cause it had rotted out around the top seam and the PCV valve.
Now getting 14-16. No change in driving habits, shift at 2500-2800. Was pulling my boat to ramp 10 miles up road but didn't affect mileage.
Gonna try side gapping the autolites tomorrow. And maybe heavier wires. the stock wires tested out good but I think they've been on a good while.
Larry
Senior User
Joined: Feb 2001
Posts: 119
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From: Dryden Canada
PLEASE HELP!!
[font size="1" color="#FF0000"]LAST EDITED ON 18-May-01 AT 04:53 PM (EST)[/font][p]Well, I just pulled out my gas receipts (with odometer readings) this morning to see what kind of mileage I'm getting. I had taken readings before the big tune-up and was getting 14-16 on average.
My first tank after the tune-up I clocked 18.576mpg combined miles (city/highway). I filled up last night again, took my odo reading at the pumps, and again it was combined city/highway miles (including a stint at 70-75mph), but this time there were about 100 miles of SERIOUS headwinds (like 30-40mph) in there ... they cost me about 1mpg ... 17.472mpg was the most recent.
It's a bone stock truck ... new Bosch Platinum plugs, NP435 tranny, 3.08 rear end, 2wd and I figure that an 18mpg average pretty good from old Wonderstart!
Chris in Canada
74 Gran Torino Brougham ... the toy ... older and wiser ... always runs.
84 F150 2WD ... the truck ... running reliably again with a new fuel pump ... wife says, "never trust a teenager."
My first tank after the tune-up I clocked 18.576mpg combined miles (city/highway). I filled up last night again, took my odo reading at the pumps, and again it was combined city/highway miles (including a stint at 70-75mph), but this time there were about 100 miles of SERIOUS headwinds (like 30-40mph) in there ... they cost me about 1mpg ... 17.472mpg was the most recent.
It's a bone stock truck ... new Bosch Platinum plugs, NP435 tranny, 3.08 rear end, 2wd and I figure that an 18mpg average pretty good from old Wonderstart!
Chris in Canada
74 Gran Torino Brougham ... the toy ... older and wiser ... always runs.
84 F150 2WD ... the truck ... running reliably again with a new fuel pump ... wife says, "never trust a teenager."
Senior User
Joined: Apr 2001
Posts: 223
Likes: 0
From: Canton, OH
PLEASE HELP!!
My 96 I-6 5-sp manual gets anywhere from 12-20. There's such a big gap because I drive it in so many ways.
On the highway I can expect about 15-17. I also have it lifted 3" (more wind resistance), an emergency lightbar (can you say DRAG), and two huge antennas...and I leave the tailgate up.
The best thing you can do, imho, is draft a semi. I did it the whole way from Florida to Ohio and I gained like six mpg or more. Good thing I have the CB, though, so he knew what the hell I was doing!!!
-Nick.
On the highway I can expect about 15-17. I also have it lifted 3" (more wind resistance), an emergency lightbar (can you say DRAG), and two huge antennas...and I leave the tailgate up.
The best thing you can do, imho, is draft a semi. I did it the whole way from Florida to Ohio and I gained like six mpg or more. Good thing I have the CB, though, so he knew what the hell I was doing!!!
-Nick.
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