88 5.0 Carb getting horrible gas mileage!!!! - MustangForums.com


Go Back   MustangForums.com > Ford Mustang Tech > 5.0L (1979-1995) Mustang > 5.0L General Discussion
Sign in using an external account
Register Forgot Password?
Search


5.0L General Discussion This section is for non-tech specific information pertaining to 5.0L Mustangs.

88 5.0 Carb getting horrible gas mileage!!!!

Reply
 
 
 
 
Thread Tools Search this Thread
Old 04-07-2010, 10:44 PM   #1
jansenmounce
 
Join Date: Mar 2010
Vehicle: 87 mustang coupe
Location: illinois
Posts: 9
Default 88 5.0 Carb getting horrible gas mileage!!!!

Hey guys I just built an 88 coupe 5.0 HO with a 600 Carb, I'm getting about 8 miles to the gallon, there for I can go about 100 miles on a tank. WTF is the problem, there doesnt seem like this is right at all. My gas gauge doesnt work correctly, when I fill it up, the gauge goes up, I know when it is almost empty because the gauge goes all the way down, could my gauge maybe finally went all the way out? Also my timing is a little off just havent had it adjusted yet, could this be eating all of my gas? Any help would be greatly appreciated, also can anyone else tell me what you are getting to a gallon with the similar setup? Thanks
jansenmounce is offline   Reply With Quote
Old 04-08-2010, 10:45 AM   #2
jansenmounce
 
Join Date: Mar 2010
Vehicle: 87 mustang coupe
Location: illinois
Posts: 9
Default

Hey guys thanks for all the help! Can anyone at least tell me what mpg you are getting with the similar setup?
jansenmounce is offline   Reply With Quote
Old 04-08-2010, 01:17 PM   #3
67mustang302
6th Gear Member
 
Join Date: Apr 2007
Vehicle: 67 Mustang Coupe
Location: California
Posts: 10,451
Default

Something is wrong. Either the gauge and/or sender are shot, you have a fuel leak, or you're jetted WAY rich.

My little 302 is not stock and I'm getting about 25 highway.
__________________
Who cares how much horsepower it has, all that matters is how fast it goes!

Untested 331, lots of suspension, chewing up corners.
67mustang302 is offline   Reply With Quote
Old 04-08-2010, 01:59 PM   #4
jansenmounce
 
Join Date: Mar 2010
Vehicle: 87 mustang coupe
Location: illinois
Posts: 9
Default

thanks for the response, I will look into the things you mentioned. I don't think that there is anyway possible that this is right....
jansenmounce is offline   Reply With Quote
Old 04-08-2010, 02:17 PM   #5
Tony71502
5th Gear Member
 
Tony71502's Avatar
 
Join Date: May 2007
Vehicle: 1991 Ford Mustang
Location: Pittsburgh
Posts: 2,459
Default

Check tire pressure. It can rob you of a few mph if it's too low.
__________________
"Research is what I'm doing when I don't know what I'm doing".
Tony71502 is offline   Reply With Quote
Old 04-09-2010, 12:34 PM   #6
Jfsram
4th Gear Member
 
Join Date: Jan 2007
Vehicle: 93 Mustang LX
Location:
Posts: 1,996
Default

A few things you must confirm first. Is the odometer reading correctly and how many gallons to drive a certain distance.

Personally I know when I screw together a new combination. I'm getting about half the mileage, just due to the grin factor.

Mileage should not even be measured unless you are driving to get maximum mileage. So if you take the car for a 10 mile cruise and run it WOT through the gears a couple times. your average MPG takes such a dump, it's not even worth measuring against.

On carbed applications. Some easy things to check are for blown power valves and you should run vacuum advance on the distributor.
__________________
65 Belevedere
69 Super Bee
87 Ram
93 Mustang
00 Park Avenue

http://www.cardomain.com/ride/754650
Jfsram is offline   Reply With Quote

 
 
 
Reply

Tags
3rd, 50, 50l, 88, 93, carb, carbed, carburated, carburetor, fuel, gas, gauge, gen, ho, mileage, mustang, stock

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Back in the market for a Mustang.. need to catch up Roush05 5.0L V8 Technical Discussions 34 08-17-2015 10:50 AM
New to 351w; fall/winter build x1n54n3x 351 Mustang 4 08-14-2015 12:03 PM
Gas mileage help! toastintx64 Classic Mustangs (Tech) 10 08-03-2015 04:01 PM
MUSTANG DIES EACH YEAR feevore General Tech 3 08-03-2015 07:01 AM

 
Advertising
Featured Sponsors
Vendor Directory
New Sponsors
All times are GMT -5. The time now is 06:07 AM.>

© Internet Brands, Inc.


This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company
Emails Backup